Download Allen & Heath ZED420 DJ mixer

USER GUIDE
Publication AP7028
Limited One Year Warranty
This product is warranted to be free from defects in materials or
workmanship for period of one year from the date of purchase by the
original owner.
To ensure a high level of performance and reliability for which this
equipment has been designed and manufactured, read this User Guide
before operating. In the event of a failure, notify and return the
defective unit to ALLEN & HEATH Limited or its authorised agent as
soon as possible for repair under warranty subject to the following
conditions
Conditions Of Warranty
The equipment has been installed and operated in accordance with the
instructions in this User Guide.
The equipment has not been subject to misuse either intended or
accidental, neglect, or alteration other than as described in the User
Guide or Service Manual, or approved by ALLEN & HEATH.
Any necessary adjustment, alteration or repair has been carried out by
ALLEN & HEATH or its authorised agent.
This warranty does not cover fader wear and tear.
The defective unit is to be returned carriage prepaid to ALLEN &
HEATH or its authorised agent with proof of purchase.
Units returned should be packed to avoid transit damage.
In certain territories the terms may vary. Check with your ALLEN &
HEATH agent for any additional warranty which may apply.
This product complies with the European Electro magnetic Compatibility
directives 89/336/EEC & 92/31/EEC and the European Low Voltage
Directives 73/23/EEC & 93/68/EEC.
This product has been tested to EN55103 Parts 1 & 2 1996 for use in
Environments E1, E2, E3, and E4 to demonstrate compliance with the
protection requirements in the European EMC directive 89/336/EEC.
During some tests the specified performance figures of the product were
affected. This is considered permissible and the product has been passed as
acceptable for its intended use. Allen & Heath has a strict policy of
ensuring all products are tested to the latest safety and EMC standards.
Customers requiring more information about EMC and safety issues can
contact Allen & Heath.
ZED 4 BUS User Guide AP7028 Issue 1
Copyright © 2007 Allen & Heath Limited. All rights reserved
Allen & Heath Limited
Kernick Industrial Estate, Penryn, Cornwall, TR10 9LU, UK
http://www.allen-heath.com
Allen & Heath
3
ZED-4 BUS User Guide
PACKED ITEMS
Check that you have received the following:
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
MIC 1
MIC 2
MIC 3
M IC 4
MIC 5
MIC 6
MIC 7
MIC 8
MIC 9
MIC 10
M IC 11
MIC 12
M IC 13
MIC 14
MIC 15
MIC 16
DIR OUT
AUX OUT
ST1 IN
ST3 IN
L
L
R
R
1
AUX
AUX
2
AUX
3
4
AUX
AUX
5
AUX
6
GRP
1
GRP
2
GRP
3
GRP
INSERT
L
48V
LINE IN
48V
LINE IN
1
48V
LINE IN
4
INSERT
2
48V
LINE IN
3
INSERT
1
48V
LINE IN
2
INSERT
3
48V
LINE IN
6
INSERT
4
48V
LINE IN
5
INSERT
5
48V
LINE IN
8
INSERT
6
48V
LINE IN
7
INSERT
7
48V
LINE IN
9
INSERT
INSERT
8
48V
LINE IN
48V
LINE IN
48V
LINE IN
48V
LINE IN
48V
LINE IN
L/M
12
13
14
15
16
INSERT
INSERT
INSERT
INSERT
INSERT
10
11
12
13
14
15
16
9
1
INSERT
11
INSERT
ST2 IN
ST4 IN
R
R
2
INSERT
INSERT
3
INSERT
1
DIR OUT
DIR OUT
DIR OUT
DIR OUT
20
21
22
23
24
MIC 20
MIC 21
M IC 22
MIC 23
MIC 24
INSERT
R
INSERT
M
48V
48V
48V
48V
48V
48V
48V
48V
R
4
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
17
18
19
20
21
22
23
24
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
17
18
19
20
21
22
23
M
2TRK OUT
M TX
DIR OUT
19
MIC 19
R
L/M
LINE IN
10
INSERT
DIR OUT
18
MIC 18
2TRK IN
4
L
48V
DIR OUT
17
MIC 17
MAIN OUT
L
GROUP OUT
L
MTX 2
USB
M ATRIX
OUT
STEREO INPUTS
RETURN
SEN D
24
R
PHONES
0
20
10
GAIN
10
30
0
MIC
LINE
-10 -6
GAIN
0
20
10
40
0
50
M IC
LINE
63 26
-10 -6
30
HPF
0
20
10
10
GAIN
40
0
50
MIC
LIN E
63 26
-10 -6
GAIN
0
20
10
40
0
50
M IC
LINE
63 26
HPF
100Hz
10
30
-10 -6
0
20
10
10
GAIN
40
0
50
M IC
LINE
63 26
HPF
100Hz
30
-10 -6
GAIN
0
20
10
40
0
50
MIC
LINE
63 26
HPF
100Hz
10
30
-10 -6
0
20
10
10
GAIN
40
0
50
M IC
LINE
63 26
HPF
100Hz
30
-10 -6
GAIN
0
20
10
40
0
50
MIC
LIN E
63 26
HPF
100H z
10
30
-10 -6
0
20
10
GAIN
40
0
50
M IC
LINE
63 26
HPF
100Hz
10
30
-10 -6
0
20
10
10
GAIN
40
0
50
MIC
LINE
63 26
HPF
100H z
30
-10 -6
GAIN
0
20
10
40
0
50
M IC
LINE
63 26
HPF
100Hz
10
30
-10 -6
0
20
10
10
GAIN
40
0
50
MIC
LINE
63 26
HP F
100Hz
30
-10 -6
GAIN
0
20
10
40
0
50
MIC
LINE
63 26
HPF
100Hz
10
30
-10 -6
GAIN
0
20
10
40
0
50
M IC
LINE
63 26
HPF
100Hz
10
30
-10 -6
GAIN
0
20
10
40
0
50
MIC
LIN E
63 26
HPF
100H z
10
30
-10 -6
GAIN
0
M IC
LINE
HF
HF
HF
HF
HF
HF
HF
HF
HF
HF
HF
HF
HF
12k
12k
12k
12k
12k
12k
12k
12k
12k
12k
12k
12k
12k
12k
-15
1k
3k +15
4k
-15
1k
3k +15
4k
-15
1k
3k +15
4k
-15
1k
3k +15
4k
-15
1k
3k +15
4k
-15
1k
3k +15
4k
-15
1k
3k +15
4k
-15
1k
3k +15
4k
-15
1k
3k +15
4k
-15
1k
3k +15
4k
-15
1k
3k +15
4k
-15
1k
3k +15
4k
-15
1k
3k +15
4k
-15
1k
-20
-30
ST3
-5
-15
To LR
To CH
-10
LEV
5
OO
10
+15
GRP
GRP
2
6k
500Hz
-15
70
15k
700
HM
45
6k
500Hz
-15
180 +15
250
70
400
15k
700
HM
45
6k
500Hz
-15
180 +15
250
70
400
15k
700
HM
45
6k
500Hz
-15
180 +15
250
70
400
15k
700
HM
45
6k
500H z
-15
180 +15
250
70
400
15k
700
HM
45
6k
500Hz
-15
180 +15
250
70
400
700
15k
HM
45
6k
500Hz
-15
180 +15
250
70
400
15k
700
HM
45
6k
500Hz
-15
180 +15
250
70
400
15k
700
HM
45
6k
500Hz
-15
180 +15
250
70
400
15k
700
HM
45
6k
500Hz
-15
180 +15
250
70
400
15k
700
HM
45
6k
500Hz
-15
180 +15
250
70
400
15k
700
HM
45
6k
500H z
-15
180 +15
250
70
400
15k
700
HM
45
6k
500Hz
-15
180 +15
250
70
400
15k
700
HM
45
6k
500Hz
-15
180 +15
250
70
400
15k
700
HM
45
6k
500Hz
-15
180 +15
250
70
400
15k
700
HM
45
6k
500Hz
70
5
-30
400
HF
OO
10
-15
+15
3
3
45
2k5
LM
1k
LM
35Hz
1k
LM
35Hz
1k
LM
35Hz
1k
LM
35Hz
1k
LM
35Hz
1k
LM
35Hz
1k
LM
35Hz
1k
LM
35Hz
1k
LM
35Hz
1k
LM
35H z
1k
LM
35Hz
1k
LM
35Hz
1k
LM
35Hz
1k
LM
35Hz
1k
400
LM
35Hz
+15
-15
LM
1k
+15
-15
LF
+15
LF
80H z
-15
+15
-15
+15
LF
80Hz
-15
+15
EQ IN
AUX1
AUX1
PRE
PRE
-15
+15
LF
80Hz
-15
+15
EQ IN
-15
+15
+15
+15
+15
+15
-15
+15
PR E
LF
-15
+15
+15
-15
LF
80Hz
-15
EQ IN
AUX1
PRE
LF
80Hz
-15
EQ IN
AUX1
PRE
-15
80Hz
-15
EQ IN
AUX1
LF
80Hz
-15
EQ IN
+15
LF
80Hz
-15
-15
+15
-15
+15
EQ IN
AUX1
AUX1
AUX1
PRE
PRE
PRE
PRE
+15
LF
80Hz
-15
+15
EQ IN
AUX1
-15
LF
80Hz
+15
EQ IN
-15
+15
+15
+15
+15
+15
-15
+15
+15
-15
+15
+15
+15
PRE
+15
-15
LF
AUX1
AUX1
PRE
PRE
+15
80Hz
-15
+15
+15
EQ IN
OO
+6
OO
+6
M
AUX1
+6
OO
PRE
OO
+6
OO
+6
+6
OO
AUX2
PRE
AUX3
+6
OO
OO
+6
OO
+6
OO
+6
OO
+6
PR E
OO
+6
OO
+6
AUX3
OO
+6
OO
+6
+6
OO
AUX2
PRE
AUX3
+6
OO
AUX2
PRE
AUX3
+6
OO
AUX2
AUX3
+6
OO
+6
OO
AUX2
AUX2
AUX2
PRE
PRE
PRE
PRE
OO
+6
OO
+6
AUX3
OO
+6
OO
+6
AUX3
OO
+6
OO
+6
+6
OO
AUX2
AUX3
+6
OO
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
PRE
OO
+6
OO
+6
AUX3
OO
+6
OO
+6
+6
OO
AUX2
PRE
AUX3
+6
OO
AUX2
PR E
AUX3
+6
OO
AUX2
PRE
AUX3
+6
OO
AUX2
PR E
AUX3
+6
OO
AUX2
AUX3
AUX2
PRE
PRE
OO
+6
OO
+6
+6
OO
AUX2
AUX4
AUX4
+6
OO
AUX4
+6
OO
P OST
P RE
+6
OO
POST
PRE
AUX4
AUX4
+6
OO
P OST
P RE
+6
OO
POST
PRE
AUX4
AUX4
+6
OO
POST
PRE
+6
OO
POST
PRE
AUX4
AUX4
+6
OO
POST
PRE
+6
OO
P OST
P RE
AUX4
+6
OO
POST
PRE
AUX4
AUX4
AUX3
+6
OO
P OST
P RE
+6
OO
POST
PRE
AUX4
+6
OO
OO
+6
OO
+6
+6
OO
POST
PRE
+6
OO
POST
PRE
OO
+6
OO
+6
OO
+6
OO
+6
+6
OO
AFL
0
+6
OO
POST
PRE
+6
OO
P OST
P RE
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
POST
POST
POST
PO ST
POST
POST
POST
POST
POST
POST
PO ST
POST
POST
POST
POST
POST
POST
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
POST
POST
POST
POST
PO ST
POST
POST
POST
POST
POST
POST
PO ST
POST
POST
POST
POST
POST
POST
+6
OO
+6
OO
=
R
EVEN
L
O DD
MUTE
R
EVEN
L
ODD
PFL
P FL
PK !
10
L
ODD
L
ODD
L
OD D
L
O DD
L
ODD
0
OO
+10
L
ODD
PFL
PK !
0
OO
+10
L-R
L-R
L-R
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
R
M
M
=
AUX5
0
OO
100Hz
3k +15
4k
-15
1k
6k
500Hz
3k +15
4k
700
15k
HM
-15
1k
6k
500Hz
-15
180 +15
250
70
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
400
-15
180 +15
250
45
70
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
400
-15
180 +15
250
45
70
15k
3k +15
4k
700
HM
-15
1k
6k
500H z
400
-15
180 +15
250
45
70
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
400
-15
180 +15
250
45
70
15k
3k +15
4k
700
HM
-15
1k
6k
500H z
400
-15
180 +15
250
45
70
15k
400
-15
45
70
35Hz
LF
1k
-15
LM
+15
35Hz
LF
80Hz
1k
-15
+10
+15
LF
1k
-15
LM
+15
+15
35Hz
1k
-15
LF
80Hz
-15
EQ IN
LM
+15
+15
35Hz
LF
80H z
-15
EQ IN
AUX1
AUX1
PRE
PRE
1k
-15
LM
+15
+15
35Hz
LF
80Hz
-15
EQ IN
1k
-15
LM
+15
400
+15
35Hz
LF
80Hz
-15
EQ IN
AUX1
1k
-15
+15
LF
+15
+6
PRE
OO
+6
OO
+6
+6
OO
AUX2
PRE
OO
+6
OO
+6
AUX4
PHONES
LEVEL
AUX4
R
L
M IN
+6
OO
+6
OO
+6
AUX3
+6
OO
+6
OO
P OST
P RE
+6
OO
POST
PRE
+6
OO
P OST
P RE
+6
OO
POST
PRE
AUX5
AUX5
AUX5
POST
POST
POST
POST
PK!
+6
0
SIG
PK!
+6
0
SIG
L
R
M
MUTE
OO
+6
AUX6
AUX6
AUX6
POST
POST
POST
POST
+6
R
EVEN
L
ODD
MUTE
10
10
5
5
5
P FL
L
O DD
L
ODD
L
ODD
PFL
PK !
PK !
SIG
10
SIG
10
10
L-R
0
M
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
5
5
5
5
5
5
5
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
10
10
10
10
10
10
10
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
1
M
M
M
M
M
0
L-R
1-2
M
M
0
M
0
M
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
2
3
4
20
5
20
6
20
7
8
9
10
11
12
13
20
14
15
16
25-26
27-28
GRP 1
GRP 2
GRP 3
GRP 4
L
R
M
17
18
19
20
21
22
R
EVEN
MUTE
PFL
PK !
L-R
0
R
EVEN
M UTE
3-4
M
0
L
ODD
SIG
10
L-R
+6
=
PAN
PFL
PK !
SIG
10
R
EVEN
+6
OO
=
PAN
MUTE
PFL
PK !
L-R
0
R
EVEN
+6
OO
=
PAN
MUTE
SIG
10
L-R
0
L
ODD
P FL
PK !
SIG
10
R
EVEN
+6
OO
=
PAN
MUTE
PFL
PK !
L-R
0
R
EVEN
MUTE
+6
OO
=
PAN
L
ODD
SIG
10
L-R
0
R
EVEN
+6
OO
=
PAN
M UTE
PFL
10
5
+6
OO
=
PK !
10
+6
OO
P AN
AFL
5
OO
+6
AUX6
POST
L
ODD
10
OO
+6
AUX6
POST
M UTE
5
OO
+6
AUX6
POST
=
10
OO
+6
AUX6
POST
OO
5
OO
+6
AUX6
PAN
10
OO
+6
+6
POST
PRE
AUX5
1-2
M
+6
OO
POST
PRE
POST
PK!
+6
0
SIG
0
+6
OO
POST
PRE
3-4
M
+6
OO
AUX4
1-2
M
+6
OO
AUX3
AUX4
AUX5
4
0
+6
OO
AUX4
POST
PK!
+6
0
SIG
0
OO
AUX3
AUX5
3
0
+6
POST
PK!
+6
0
SIG
AFL
+6
OO
AUX4
AUX5
PK!
+6
0
SIG
AFL
OO
AUX3
AUX4
POST
2
M UTE
+6
PRE
AUX5
R
MUTE
+6
OO
OO
AUX2
PRE
LR
M
1
M UTE
OO
AUX3
+6
OO
AUX2
PRE
M AX
PK!
+6
0
SIG
MUTE
+6
AUX4
+6
OO
PAN
L
+6
OO
+6
OO
AUX2
PR E
+10
AFL
OO
R
OO
AUX3
+6
OO
AUX2
PRE
PRE
3-4
M
+15
EQ IN
AUX1
PRE
1-2
M
+15
-15
AUX1
PRE
+6
OO
AUX2
PRE
AUX1
PR E
+6
OO
AUX2
AUX3
AUX1
PRE
3-4
M
-15
EQ IN
1-2
M
1k
80Hz
-15
EQ IN
3-4
M
400
35H z
1-2
M
15k
180 +15
250
45
LM
+15
80Hz
-15
EQ IN
AUX1
PRE
AUX2
0
OO
=
P AN
L
LM
+15
80Hz
-15
35Hz
3-4
M
6k
500Hz
1-2
M
3k +15
4k
700
HM
180 +15
250
3-4
M
40
HPF
100H z
1-2
M
10
63 26
HPF
100Hz
30
50
-10 -6
3-4
M
0
20
10
0
MIC
LINE
12k
OO
AUX6
AFL
M
=
PAN
0
GAIN
40
50
63 26
HPF
100H z
10
30
HF
LM
L-R
0
-10 -6
12k
POST
PRE
AFL
0
M IC
LINE
HF
SIG
10
GAIN
40
50
12k
SIG
10
L-R
0
+10
L-R
MUTE
0
20
10
10
63 26
HPF
100Hz
30
HF
PK !
SIG
10
L-R
0
MUTE
PFL
PK !
SIG
10
R
EVEN
L
ODD
MUTE
P FL
PK !
L-R
0
R
EVEN
L
ODD
-10 -6
1-2
M
0
BAL
MUTE
SIG
10
L-R
R
EVEN
+6
=
BAL
L
OD D
PFL
PK !
SIG
10
R
EVEN
MUTE
P FL
PK !
L-R
0
R
EVEN
OO
AFL
R
0
20
10
0
M IC
LINE
12k
+6
OO
=
PAN
0
AUX4
AFL
L
+6
OO
=
PAN
M UTE
SIG
10
L-R
0
L
ODD
PFL
PK !
SIG
10
R
EVEN
+6
OO
=
P AN
MUTE
PFL
PK !
L-R
0
R
EVEN
+6
OO
=
PAN
M UTE
SIG
10
L-R
0
L
ODD
PFL
PK !
SIG
10
R
EVEN
+6
OO
=
PAN
MUTE
PFL
PK !
L-R
0
R
EVEN
MUTE
SIG
10
L-R
0
L
ODD
+6
OO
=
PAN
P FL
PK !
SIG
10
R
EVEN
+6
OO
=
PAN
MUTE
PFL
PK !
L-R
0
R
EVEN
MUTE
SIG
10
L-R
0
L
ODD
+6
OO
=
PAN
P FL
PK !
SIG
10
R
EVEN
+6
OO
=
PAN
M UTE
PFL
PK !
L-R
0
R
EVEN
MUTE
SIG
10
L-R
0
L
ODD
+6
OO
=
P AN
PFL
PK !
SIG
10
R
EVEN
+6
OO
=
PAN
M UTE
PFL
PK !
L-R
0
R
EVEN
+6
OO
=
P AN
MUTE
SIG
10
L-R
0
L
ODD
PFL
PK !
SIG
SIG
L-R
R
EVEN
+6
OO
=
PAN
MUTE
+6
OO
=
PAN
MUTE
+6
OO
=
P AN
L
ODD
+6
OO
=
PAN
AUX3
AFL
PAN
OO
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
L
PFL/AFL ACTIVE
AFL
=
AUX6
GAIN
40
50
63 26
HPF
100Hz
10
30
HF
1k
ALLEN&HEATH
AUX2
M
AUX5
POST
-10 -6
12k
POST
PRE
AUX5
0
MIC
LIN E
HF
AUX3
+10
GAIN
40
50
PFL
+6
AUX4
0
20
10
10
63 26
HPF
100Hz
30
12k
70
AUX3
AUX4
POST
PRE
+6
OO
PRE
AUX3
+6
OO
POST
PRE
PLAYBACK
LEVEL
M ATRIX 2
AUX1
-10 -6
HF
HM
+6
AUX2
PRE
AUX4
+6
AFL
OO
AUX2
AUX3
AUX4
+6
OO
OO
1
0
20
10
0
M IC
LINE
12k
POWER
PLAYBACK
To LR
OO
AUX4
OO
M
PRE
GAIN
40
50
63 26
HF
45
LEVEL
AUX1
PRE
10
30
All up =LR post
+6
OO
-10 -6
Talk to LRM
AUX
5-6
LR
pre-fade
+15
EQ IN
M ATRIX
AUX2
+6
R
LEVEL
-15
EQ IN
0
20
10
0
MIC
LIN E
HPF
100Hz
-15
+6
OO
LF
80Hz
-15
EQ IN
AUX1
PRE
-15
LF
80H z
-15
EQ IN
AUX1
PR E
LF
80Hz
-15
EQ IN
AUX1
PRE
LF
80Hz
-15
EQ IN
AUX1
PR E
-15
80Hz
-15
EQ IN
AUX1
LF
80Hz
-15
EQ IN
R
250Hz
-15
-15
+15
GAIN
40
50
63 26
HPF
700
AUX
1-2
OO
L
LM
250Hz
LF
80Hz
+6
10
30
12k
-15
-15
35Hz
+6
OO
-10 -6
HF
MAX
Talk to AUX 1-4
4
OO
L
M IN
MTX
1-2
+6
OO
GRP
12k
HM
2k5
0
M IC
LINE
USB SEND SOURCE
+6
4
180 +15
250
0
20
10
GAIN
40
50
63 26
TB MIC
TB
LEVEL
GRP
GRP
HF
HM
-10 -6
+6
OO
GRP
10
30
0
MIC
LINE
PLAYBACK SOURCE
2
+6
OO
0
15k
12k
-15
180 +15
250
GAIN
2TRK
USB
+6
OO
-5
-20
-15
1
+6
OO
700
HM
ST3 IN
USB
GRP
1
OO
To LR
To CH
ST4
0
-30
3k +15
4k
GRP
5
10
OO
-20
1k
0
-30
-5
LEV
0
20
10
-5
-20
5
ST2 -10
3k +15
4k
-10
LEV
0
10
OO
100Hz
HF
12k
3k +15
4k
-10
LEV
40
50
HPF
100Hz
HF
12k
-15
ST1
10
63 26
HPF
100Hz
30
-10 -6
HF
1k
0
20
10
40
50
63 26
HPF
100Hz
10
30
ST3 INPUT SOURCE
20
23
20
24
ZED-420, ZED428 or ZED-436 MIXER
Type A-B USB Lead
Mains Lead
Check that the correct
mains plug is fitted.
To connect the ZED to
your computer.
SONAR LE
SONAR LE
Music Software Install disk.
INSTALL
cakewalk
Allen & Heath
4
ZED-4 BUS User Guide
SAFETY INSTRUCTIONS
WARNINGS -
Read the following before proceeding :
CAUTION
ATTENTION: RISQUE DE CHOC ELECTRIQUE – NE PAS OUVRIR
Read instructions:
Retain these safety and operating instructions for future reference. Adhere to all warnings printed here
and on the console. Follow the operating instructions printed in this User Guide.
Do not remove cover:
Operate the console with its covers correctly fitted.
Power sources:
Connect the console to a mains power unit only of the type described in this User Guide and marked
on the rear panel. Use the power cord with sealed mains plug appropriate for your local mains supply as provided with the console. If the provided plug does not fit into your outlet consult your service
agent for assistance.
Power cord routing:
Route the power cord so that it is not likely to be walked on, stretched or pinched by items placed
upon or against it.
Grounding:
Do not defeat the grounding and polarisation means of the power cord plug. Do not remove or tamper with the ground connection in the power cord.
!
WARNING: This equipment must be earthed.
Water and moisture:
To reduce the risk of fire or electric shock do not expose the console to rain or moisture or use it in
damp or wet conditions. Do not place containers of liquids on it which might spill into any openings.
Ventilation:
Do not obstruct the ventilation slots or position the console where the air flow required for ventilation
is impeded. If the console is to be operated in a rack unit or flightcase ensure that it is constructed to
allow adequate ventilation.
Heat and vibration:
Do not locate the console in a place subject to excessive heat or direct sunlight as this could be a fire
hazard. Locate the console away from any equipment which produces heat or causes excessive vibration.
Servicing:
Switch off the equipment and unplug the power cord immediately if it is exposed to moisture, spilled
liquid, objects fallen into the openings, the power cord or plug become damaged, during lightening
storms, or if smoke, odour or noise is noticed. Refer servicing to qualified technical personnel only.
Installation:
Install the console in accordance with the instructions printed in this User Guide. Do not connect the
output of power amplifiers directly to the console. Use audio connectors and plugs only for their
intended purpose.
Allen & Heath
5
ZED-4 BUS User Guide
SAFETY INSTRUCTIONS
Important Mains plug wiring instructions
The console is supplied with a moulded mains plug fitted to the AC
mains power lead. Follow the instructions below if the mains plug has to
be replaced. The wires in the mains lead are coloured in accordance
with the following code:
TERMINAL
!
WIRE COLOUR
European
USA/Canada
L
LIVE
BROWN
BLACK
N
NEUTRAL
BLUE
WHITE
E
EARTH GND
GREEN & YELLOW
GREEN
The wire which is coloured Green and Yellow must be connected to the
terminal in the plug which is marked with the letter E or with the Earth symbol. This appliance must be earthed.
The wire which is coloured Blue must be connected to the terminal in the
plug which is marked with the letter N.
The wire which is coloured Brown must be connected to the terminal in the
plug which is marked with the letter L.
Ensure that these colour codes are followed carefully in the event of the
plug being changed.
General Precautions:
Damage :
To prevent damage to the controls and cosmetics avoid placing heavy objects
on the control surface, scratching the surface with sharp objects, or rough
handling and vibration.
Environment :
Protect from excessive dirt, dust, heat and vibration when operating and storing. Avoid tobacco ash, smoke, drinks spillage, and exposure to rain and moisture. If the console becomes wet, switch off and remove mains power immediately. Allow to dry out thoroughly before using again.
Cleaning :
Avoid the use of chemicals, abrasives or solvents. The control panel is best
cleaned with a soft brush and dry lint-free cloth. The faders, switches and potentiometers are lubricated for life. The use of electrical lubricants on these
parts is not recommended. The fader and potentiometer knobs may be removed for cleaning with a warm soapy solution. Rinse and allow to dry fully
before refitting them.
Transporting :
The console may be transported as a free-standing unit or mounted in a rack
or flightcase. Protect the controls from damage during transit. Use adequate
packing if you need to ship the unit.
Hearing :
To avoid damage to your hearing do not operate any sound system at excessively high volume. This applies particularly to close-to-ear monitoring such as
headphones and in-ear systems. Continued exposure to high volume sound
can cause frequency selective or wide range hearing loss.
Allen & Heath
6
ZED-4 BUS User Guide
CONTENTS
Thank you for purchasing your Allen & Heath ZED mixer. To ensure that
you get the maximum benefit from the unit please spare a few minutes
familiarizing yourself with the controls and setup procedures outlined in
this user guide. For further information please refer to the additional
information available on our web site, or contact our technical support
team.
http://www.allen-heath.com
http://www.allen-heath.com/zed
http://www.myspace.com/thezedspace
Warranty .............................................
Packed Items.......................................
Safety Instructions .............................
Contents..............................................
Panel Drawings...................................
Introduction to ZED .........................
Specifications ......................................
Dimensions .........................................
Block Diagram....................................
Mono Input Channel .........................
Stereo Input Channel........................
Matrix Outputs & Aux Masters.......
Group Masters ...................................
L R & M Masters & Headphones ....
Main Meters and Talkback ................
USB Selection and Playback.............
USB Connection ................................
SONAR LE software introduction .
SONAR LE installation .....................
Configuring SONAR LE with ZED.
Using USB for effects ........................
Wiring Notes .....................................
Product Support ................................
Allen & Heath
7
3
4
5
7
8
11
12
13
14
15
19
22
23
24
25
26
27
28
29
29
32
33
34
ZED-4 BUS User Guide
PANEL DRAWINGS—ZED420
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
CAUTION
ON
0
I
T1.6A L 250V 20mm
AC MAINS IN ~
ALLEN&HEATH
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired operation.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
FUSE
OFF
AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR.
100 - 240V~ 47-63Hz 60W MAX
Serial No.
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE FUSE WITH SAME TYPE AND RATING.
ATTENTION: REMPLACER PAR UN FUSIBLE STRICTEMENT IDENTIQUE EN VALEURS.
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
ENGINEERED IN ENGLAND BY ALLEN & HEATH LIMITED.
WARNING: THIS APPARATUS MUST BE EARTHED
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
MIC 1
MIC 2
MIC 3
MIC 4
MIC 5
MIC 6
MIC 7
MIC 8
MIC 9
MIC 10
MIC 11
MIC 12
MIC 13
MIC 14
MIC 15
MIC 16
AUX OUT
ST1 IN
ST3 IN
L
L
R
R
L/M
L/M
AUX
1
AUX
2
AUX
3
AUX
4
AUX
5
AUX
6
MAIN OUT
L
GROUP OUT
GRP
1
GRP
2
GRP
3
GRP
INSERT
L
INSERT
R
INSERT
M
2TRK IN
4
L
48V
48V
48V
48V
48V
48V
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
1
2
3
4
5
INSERT
INSERT
1
INSERT
2
INSERT
3
LINE IN
INSERT
5
48V
48V
48V
48V
48V
48V
48V
48V
48V
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
7
8
9
10
11
12
13
14
15
16
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
9
10
11
12
13
14
15
16
6
INSERT
4
48V
INSERT
6
INSERT
7
8
1
INSERT
ST2 IN
ST4 IN
R
R
2
INSERT
3
INSERT
INSERT
R
R
4
M
2TRK OUT
L
MTX
1
MTX
2
USB
MATRIX
OUT
STEREO INPUTS
RETURN
SEND
R
PHONES
0
20
10
GAIN
10
30
0
MIC
LINE
40
50
-10 -6
0
20
10
GAIN
63 26
10
30
0
MIC
LINE
40
50
-10 -6
63 26
HPF
0
20
10
GAIN
0
MIC
LINE
0
20
10
GAIN
40
50
-10 -6
63 26
HPF
100Hz
10
30
0
MIC
LINE
0
20
10
GAIN
40
50
-10 -6
63 26
HPF
100Hz
10
30
0
MIC
LINE
0
20 3010
10
GAIN
40
50
-10 -6
63 26
HPF
100Hz
10
30
0
MIC
LINE
40
50
-10 -6
63 26
HPF
100Hz
0
20
10
GAIN
0
MIC
LINE
0
20
10
GAIN
40
50
-10 -6
63 26
HPF
100Hz
10
30
0
MIC
LINE
0
20
10
GAIN
40
50
-10 -6
63 26
HPF
100Hz
10
30
0
MIC
LINE
0
20
10
GAIN
40
50
-10 -6
63 26
HPF
100Hz
10
30
0
MIC
LINE
0
20
10
GAIN
40
50
-10 -6
63 26
HPF
100Hz
10
30
0
MIC
LINE
0
20
10
GAIN
40
50
-10 -6
63 26
HPF
100Hz
10
30
0
MIC
LINE
0
20 3010
10
GAIN
40
50
-10 -6
63 26
HPF
100Hz
10
30
0
MIC
LINE
40
50
-10 -6
63 26
HPF
100Hz
0
20
10
GAIN
0
MIC
LINE
0
20
10
GAIN
40
50
-10 -6
63 26
HPF
100Hz
10
30
0
MIC
LINE
40
63 26
-10 -6
HF
HF
HF
HF
HF
HF
HF
HF
HF
HF
HF
HF
HF
12k
12k
12k
12k
12k
12k
12k
12k
12k
12k
12k
12k
12k
12k
1k
700
HM
1k
6k
500Hz
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
15k
3k +15
4k
700
HM
-15
1k
6k
500Hz
15k
To LR
To CH
ST4
-5
0
5
180 +15
250
LM
-15
70
400
35Hz
1k
-15
+15
180 +15
250
45
LM
-15
70
400
35Hz
1k
-15
+15
180 +15
250
45
LM
-15
70
400
35Hz
1k
-15
+15
180 +15
250
45
LM
-15
70
400
35Hz
1k
-15
+15
180 +15
250
45
LM
-15
70
400
35Hz
1k
-15
+15
180 +15
250
45
LM
-15
70
400
35Hz
1k
-15
+15
180 +15
250
45
LM
-15
70
400
35Hz
1k
-15
+15
180 +15
250
45
LM
-15
70
400
35Hz
1k
-15
+15
180 +15
250
45
LM
-15
70
400
35Hz
1k
-15
+15
180 +15
250
45
LM
-15
70
400
35Hz
1k
-15
+15
180 +15
250
45
LM
-15
70
400
35Hz
1k
-15
+15
180 +15
250
45
LM
-15
70
400
35Hz
1k
-15
+15
180 +15
250
45
LM
-15
70
400
35Hz
1k
-15
+15
180 +15
250
45
LM
-15
70
400
35Hz
1k
-15
+15
180 +15
250
45
LM
-15
70
400
35Hz
1k
12k
-15
+15
180 +15
250
-15
+15
-15
+15
1k
-15
+15
LM
LF
LF
LF
LF
LF
LF
LF
LF
LF
LF
LF
LF
LF
LF
+6
80Hz
-15
+15
80Hz
-15
80Hz
+15
EQ IN
-15
+15
EQ IN
AUX1
PRE
80Hz
-15
+15
EQ IN
AUX1
AUX1
PRE
PRE
80Hz
-15
80Hz
+15
EQ IN
-15
+15
EQ IN
AUX1
AUX1
PRE
80Hz
-15
+15
EQ IN
PRE
80Hz
-15
+15
EQ IN
AUX1
AUX1
PRE
PRE
80Hz
-15
80Hz
+15
EQ IN
-15
+15
EQ IN
AUX1
PRE
80Hz
-15
+15
EQ IN
AUX1
AUX1
PRE
PRE
80Hz
-15
80Hz
+15
EQ IN
-15
+15
EQ IN
AUX1
AUX1
PRE
80Hz
-15
+15
EQ IN
3
3
OO
+6
OO
+6
PRE
+15
AUX1
AUX1
PRE
PRE
-15
+15
-15
+15
-15
+15
PRE
OO
+6
L
OO
+6
OO
+6
OO
+6
OO
+6
AUX2
PRE
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
-15
AUX1
AUX1
PRE
PRE
PRE
OO
+6
OO
+6
OO
+6
OO
+6
AUX2
+6
OO
AUX4
AUX4
+6
OO
+6
OO
AUX4
+6
OO
POST
PRE
+6
OO
AUX4
+6
OO
POST
PRE
+6
OO
AUX4
+6
OO
POST
PRE
+6
OO
AUX4
+6
OO
POST
PRE
+6
OO
AUX4
+6
OO
POST
PRE
+6
OO
AUX4
+6
OO
POST
PRE
+6
OO
AUX4
+6
OO
POST
PRE
+6
OO
AUX4
+6
OO
POST
PRE
+6
OO
AUX4
+6
OO
POST
PRE
+6
OO
AUX4
+6
OO
POST
PRE
+6
OO
AUX4
+6
OO
POST
PRE
+6
OO
AUX4
+6
OO
POST
PRE
+6
+6
OO
POST
PRE
+6
AUX4
+6
OO
POST
PRE
+6
OO
+6
OO
POST
PRE
+6
+6
OO
PLAYBACK
To LR
+6
OO
OO
+6
OO
+6
OO
+6
OO
+6
AUX1
0
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
AUX5
POST
POST
POST
POST
POST
POST
POST
POST
POST
POST
POST
POST
POST
POST
POST
+10
0
OO
+10
AFL
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
L-R
+6
OO
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
AUX6
POST
POST
POST
POST
POST
POST
POST
POST
POST
POST
POST
POST
POST
POST
POST
POST
POST
+6
OO
+6
OO
=
+6
OO
=
MUTE
R
EVEN
MUTE
PFL
R
EVEN
L
ODD
MUTE
PFL
MUTE
PFL
R
EVEN
MUTE
PFL
PFL
R
EVEN
L
ODD
L
ODD
MUTE
MUTE
PFL
PFL
MUTE
R
EVEN
MUTE
PFL
R
EVEN
L
ODD
MUTE
PFL
MUTE
PFL
R
EVEN
MUTE
PFL
R
EVEN
L
ODD
MUTE
PFL
L
ODD
MUTE
PFL
MUTE
PFL
R
EVEN
PK !
PK !
PK !
PK !
PK !
PK !
PK !
PK !
PK !
PK !
PK !
PK !
PK !
PK !
PK !
PK !
SIG
SIG
SIG
SIG
SIG
SIG
SIG
SIG
SIG
SIG
SIG
SIG
SIG
SIG
SIG
SIG
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
0
M
0
M
L-R
0
M
L-R
0
M
L-R
0
M
L-R
0
M
L-R
0
M
L-R
0
M
L-R
0
M
L-R
0
M
L-R
0
M
L-R
0
M
L-R
0
M
L-R
0
M
0
0
+10
AUX5
0
AFL
L-R
OO
+10
AUX6
0
OO
AFL
+10
AFL
M
PHONES
LEVEL
L-R
M
M
=
PAN
MIN
MAX
LR
M
=
R
PAN
L
R
PAN
L
R
L
R
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
1
2
3
4
L
R
M
MUTE
MUTE
PFL
AFL
MUTE
AFL
MUTE
AFL
MUTE
MUTE
MUTE
MUTE
AFL
SIG
10
L-R
M
0
OO
PK !
10
L-R
M
R
EVEN
MUTE
10
L-R
L
ODD
PFL
SIG
L-R
R
EVEN
PFL
PK !
L-R
=
BAL
L
ODD
MUTE
PFL
+6
OO
BAL
L
ODD
AUX4
AFL
=
L
=
PAN
R
EVEN
+6
OO
=
PAN
R
EVEN
+6
OO
=
PAN
L
ODD
+6
OO
=
PAN
L
ODD
+6
OO
=
PAN
R
EVEN
+6
OO
=
PAN
L
ODD
+6
OO
=
PAN
L
ODD
+6
OO
=
PAN
R
EVEN
+6
OO
=
PAN
R
EVEN
+6
OO
=
PAN
L
ODD
+6
OO
=
PAN
L
ODD
+6
OO
=
PAN
R
EVEN
+6
OO
=
PAN
L
ODD
+6
OO
=
PAN
L
ODD
+6
OO
=
PAN
R
EVEN
+10
+6
OO
AUX6
POST
L
ODD
0
OO
L-R
=
AUX6
PAN
AUX3
AFL
PAN
+6
OO
R
ALLEN&HEATH
AUX2
M
AUX5
POST
+6
L
PFL/AFL ACTIVE
2
MATRIX
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
PFL
AFL
1
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
POST
PRE
AUX5
POST
OO
+6
OO
LEVEL
+6
OO
AFL
POST
PRE
AUX5
POST
+6
POWER
PLAYBACK
LEVEL
+15
AUX4
AUX5
OO
AUX
5-6
LR
pre-fade
AUX3
OO
AUX4
Talk to LRM
All up =LR post
PRE
AUX3
OO
AUX4
+6
OO
POST
PRE
+6
OO
+6
MAX
Talk to AUX 1-4
M
OO
+6
OO
OO
MIN
MTX
1-2
AUX2
PRE
AUX3
+6
AUX
1-2
+6
M
EQ IN
AUX1
PRE
AUX3
+6
OO
R
LEVEL
+15
EQ IN
AUX2
PRE
AUX3
OO
L
R
MATRIX
AUX2
TB MIC
TB
LEVEL
4
OO
80Hz
-15
+15
EQ IN
AUX1
PLAYBACK SOURCE
USB SEND SOURCE
LF
80Hz
-15
EQ IN
+6
GRP
4
+15
LF
80Hz
-15
EQ IN
+6
2
GRP
OO
80Hz
OO
OO
GRP
2
GRP
250Hz
-15
LF
+6
2TRK
USB
LM
250Hz
LF
OO
OO
GRP
2k5
400
35Hz
1
GRP
HM
2k5
GRP
1
10
OO
HF
12k
15k
45
LM
0
5
10
OO
HF
GRP
ST3 IN
USB
-5
-30
HM
-15
70
45
-10
LEV
-20
-30
6k
500Hz
5
10
OO
To LR
To CH
3k +15
4k
700
HM
0
-30
-20
1k
15k
-5
-20
5
10
OO
LEV
-15
6k
500Hz
-30
ST2 -10
3k +15
4k
700
HM
-20
-10
LEV
0
100Hz
HF
12k
-15
40
50
ST3 INPUT SOURCE
ST3
-5
HPF
100Hz
HF
12k
3k +15
4k
-10
LEV
63 26
HPF
100Hz
ST1
10
30
0
MIC
LINE
HF
-15
0
20
10
GAIN
50
-10 -6
HPF
100Hz
10
30
10
10
10
10
10
10
5
5
5
5
5
5
10
5
0
0
0
0
0
0
0
L-R
0
M
M
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
5
5
5
5
5
5
5
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
10
10
10
10
10
10
10
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
OO
1
OO
2
Allen & Heath
OO
3
OO
4
OO
5
OO
6
OO
7
OO
8
OO
9
OO
10
OO
11
OO
12
OO
13
8
OO
14
OO
15
OO
16
OO
17-18
OO
19-20
OO
GRP 1
OO
GRP 2
OO
GRP 3
OO
GRP 4
OO
L
OO
R
OO
M
ZED-4 BUS User Guide
PANEL DRAWINGS—ZED428
1
DIR OUT
MIC 1
2
DIR OUT
MIC 2
3
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR.
MIC 5
5
DIR OUT
WARNING: THIS APPARATUS MUST BE EARTHED
4
DIR OUT
MIC 4
This device com plies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device m ay not cause harmful interference, and
(2) this device m ust accept any interference received,
including interference that may cause undesired operation.
6
LINE IN
48V
MIC 6
6
DIR OUT
7
LINE IN
48V
MIC 7
7
DIR OUT
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE FUSE WITH SAME TYPE AND RATING.
ATTENTION: REMPLACER PAR UN FUSIBLE STRICTEMENT IDENTIQUE EN VALEURS.
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
DIR OUT
MIC 3
5
LINE IN
48V
8
0
OFF
I
ON
9
AC MAINS IN ~
100 - 240V~ 47-63Hz 60W MAX
LINE IN
48V
MIC 9
9
DIR OUT
FUSE
T1.6A L 250V 20mm
+6
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
40
50
63 26
6k
100Hz
HPF
+15
400
250
+15
15k
3k +15
4k
180
+15
1k
-15
OO
OO
+6
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
AUX2
AUX3
PRE
=
OO
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
15
DIR OUT
16
DIR OUT
10
30
40
50
63 26
6k
100Hz
HPF
+15
400
250
+15
15k
3k +15
4k
180
+15
1k
-15
OO
OO
+6
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
AUX6
POST
=
OO
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
10
30
40
50
63 26
100Hz
HPF
+15
6k
400
250
+15
15k
3k +15
4k
180
+15
1k
-15
OO
OO
+6
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
AUX6
POST
=
OO
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
10
30
40
50
63 26
6k
100Hz
HPF
+15
400
250
+15
15k
3k +15
4k
180
+15
1k
-15
OO
OO
+6
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
AUX6
POST
=
OO
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
10
30
40
50
63 26
100Hz
HPF
6k
400
250
+15
15k
3k +15
4k
180
+15
1k
+15
OO
OO
+6
+6
+6
+6
+6
POST
PRE
OO
+6
MUTE
R
EVEN
OO
OO
OO
EQ IN
-15
=
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
POST
AUX6
PAN
L
ODD
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
10
30
40
50
63 26
100Hz
HPF
6k
400
250
+15
15k
3k +15
4k
180
+15
1k
+15
OO
OO
+6
+6
+6
+6
+6
POST
PRE
OO
+6
MUTE
R
EVEN
OO
OO
OO
EQ IN
-15
=
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
POST
AUX6
PAN
L
ODD
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
10
30
40
50
63 26
100Hz
HPF
6k
400
250
+15
15k
3k +15
4k
180
+15
1k
+15
OO
OO
+6
+6
+6
+6
+6
POST
PRE
OO
+6
MUTE
R
EVEN
OO
OO
OO
EQ IN
-15
=
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
POST
AUX6
PAN
L
ODD
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
+6
-30
-20
LEV
ST1
40
10
30
OO
+6
OO
OO
-15
ST3 IN
L
ST1 IN
L
R
L/M
R
L/M
+6
5
LEV
ST3
OO
-10
-30
-20
HF
OO
-5
-5
0
5
To LR
To CH
10
+15
+15
+15
-15
-15
+15
-30
-20
ST4 -10
LEV
12k
LM
-15
OO
OO
+6
+6
+6
EQ IN
-15
250Hz
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
OO
+6
+6
POST
PRE
OO
OO
5
R
OO
+6
AUX4
POST
AUX5
AUX6
+6
AUX
GRP
1
1
1
INSERT
MTX
1
2
4
L
R
AUX
GRP
OO
OO
OO
OO
OO
OO
OO
OO
AUX2
PAN
2
0
AUX
MATRIX
OUT
OO
AUX3
PAN
3
3
AUX
AUX OUT
GRP
4
4
INSERT
OO
PLAYBACK
LEVEL
4
PFL
USB
SEND
PLAYBACK
To LR
+6
All up =LR post
LR
pre-fade
AUX
5-6
AUX
1-2
MTX
1-2
USB SEND SOURCE
PLAYBACK SOURCE
2TRK
USB
ST3 IN
USB
ST3 INPUT SOURCE
RETURN
0
+10
AFL
L-R
M
OO
AUX4
PAN
L
=
0
+10
AFL
L-R
M
R
AUX
OO
AUX5
5
2TRK IN
L
R
L
AUX
6
INSERT
INSERT
INSERT
L
R
L
R
M
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
R
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
Talk to LRM
MAIN OUT
TB MIC
Talk to AUX 1-4
MAX
M
PHONES
OO
AUX6
+10
0
PFL/AFL ACTIVE
L
POWER
MIN
TB
LEVEL
2TRK OUT
R
0
+10
AFL
PHONES
LEVEL
MIN
0
20
10
-10 -6
0
MIC
LINE
GAIN
1-2
3-4
1-2
3-4
1-2
3-4
1-2
3-4
1-2
3-4
1-2
3-4
1-2
3-4
1-2
3-4
1-2
3-4
1-2
3-4
1-2
3-4
1-2
3-4
1-2
3-4
24
DIR OUT
24
LINE IN
48V
MIC 24
23
DIR OUT
23
LINE IN
48V
MIC 23
22
22
LINE IN
48V
MIC 22
DIR OUT
21
LINE IN
48V
MIC 21
21
20
LINE IN
48V
MIC 20
DIR OUT
MIC 19
20
MIC 18
19
LINE IN
48V
24
INSERT
18
LINE IN
48V
23
INSERT
1-2
3-4
1-2
3-4
1-2
3-4
400
1k
500Hz
700
HM
-15
70
15k
35Hz
+15
+15
1k
400
250
+15
-15
OO
OO
+6
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
EQ IN
-15
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
1-2
3-4
-10 -6
1k
500Hz
700
HM
-15
70
40
50
63 26
6k
100Hz
HPF
15k
35Hz
+15
+15
1k
400
250
+15
-15
OO
OO
+6
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
EQ IN
-15
45
LM
LF
80Hz
PRE
AUX1
AUX2
POST
AUX6
POST
AUX5
AUX4
AUX3
PRE
=
MUTE
R
EVEN
OO
L
ODD
PAN
1-2
3-4
-10 -6
-15
1k
500Hz
700
HM
-15
70
40
50
63 26
6k
100Hz
HPF
15k
3k +15
4k
35Hz
+15
+15
1k
400
250
+15
-15
OO
OO
+6
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
EQ IN
-15
45
LM
LF
80Hz
PRE
AUX1
AUX2
POST
AUX6
POST
AUX5
AUX4
AUX3
PRE
=
PFL
MUTE
R
EVEN
OO
L
ODD
PAN
1-2
3-4
-10 -6
-15
1k
500Hz
700
HM
-15
70
40
50
63 26
1k
OO
+6
+6
+6
+6
+6
PFL
400
0
MUTE
R
EVEN
OO
10
6k
100Hz
HPF
+15
250
+15
15k
3k +15
4k
180
35Hz
+15
OO
+6
EQ IN
-15
1-2
3-4
24
POST
PRE
OO
OO
-15
45
LM
LF
80Hz
AUX1
AUX2
PRE
=
OO
SIG
PK !
L
ODD
PAN
POST
AUX6
POST
AUX5
AUX4
AUX3
PRE
10
30
22
1k
+6
=
OO
R
EVEN
MUTE
3k +15
4k
10
30
INSERT
40
50
63 26
100Hz
HPF
-15
10
30
21
-10 -6
10
30
INSERT
10
30
40
50
63 26
100Hz
HPF
15k
+15
250
+15
35Hz
+15
OO
+6
AUX4
POST
AUX5
POST
AUX6
PAN
L
ODD
6k
GAIN
20
-10 -6
500Hz
700
HM
-15
70
-15
45
-15
OO
+6
EQ IN
OO
+6
+6
OO
OO
+6
POST
PRE
OO
R
EVEN
MUTE
3k +15
4k
GAIN
INSERT
10
30
40
50
63 26
100Hz
HPF
-15
GAIN
19
-10 -6
400
LM
LF
80Hz
PRE
AUX1
AUX2
POST
AUX6
POST
AUX5
AUX4
AUX3
PRE
=
6k
GAIN
INSERT
17
LINE IN
48V
MIC 17
DIR OUT
0
20
10
19
0
20
10
0
MIC
LINE
DIR OUT
0
20
10
0
MIC
LINE
18
0
20
10
0
MIC
LINE
DIR OUT
0
20
10
0
MIC
LINE
17
0
20
10
0
MIC
LINE
18
10
30
40
50
63 26
100Hz
HPF
GAIN
INSERT
0
MIC
LINE
DIR OUT
0
20
10
-10 -6
GAIN
17
0
MIC
LINE
GAIN
INSERT
10
30
40
50
63 26
100Hz
HPF
1k
+6
3k +15
4k
HF
-15
HF
+15
OO
+6
1k
HF
35Hz
+15
250
+15
6k
HF
500Hz
700
HM
-15
70
-15
OO
+6
+6
+6
POST
PRE
OO
OO
OO
EQ IN
-15
45
15k
HF
400
LM
LF
80Hz
PRE
AUX1
AUX2
PRE
3k +15
4k
HF
-15
HF
1k
1k
HF
6k
12k
15k
3k +15
4k
+15
250
+15
35Hz
+15
+6
AUX3
AUX4
POST
AUX5
POST
AUX6
+6
PAN
L
ODD
180
12k
-15
1k
500Hz
700
HM
-15
70
-15
45
-15
OO
+6
EQ IN
OO
=
OO
R
EVEN
MUTE
180
12k
6k
400
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
+6
+6
OO
OO
+6
POST
PRE
OO
+6
PAN
L
ODD
180
12k
+6
=
OO
R
EVEN
MUTE
180
12k
1k
OO
+6
AUX4
POST
AUX5
POST
AUX6
PAN
L
ODD
180
12k
15k
3k +15
4k
+15
250
+15
35Hz
+15
OO
+6
+6
OO
OO
+6
POST
PRE
OO
+6
180
12k
-15
1k
500Hz
700
180
12k
HM
-15
70
-15
POST
AUX5
EQ IN
-15
45
LM
LF
80Hz
PRE
AUX1
AUX2
LR
M
AUX4
AUX3
PRE
=
MUTE
R
EVEN
OO
L
ODD
PAN
POST
AUX6
MAX
AFL
ALLEN&HEATH
3
=
INSERT
GRP
GROUP OUT
2
+6
+6
+6
+6
+6
+6
+6
+6
2
2
M
L-R
AFL
+10
AFL
2
=
MATRIX
OO
LEVEL
M
MTX
INSERT
GRP
1
+6
GRP
OO
1
2
GRP
+6
+6
+6
+6
+6
AFL
1
GRP
3
+6
GRP
OO
OO
OO
+6
3
4
GRP
L
R
OO
OO
LEVEL
M
OO
GRP
OO
GRP
0
+10
AFL
L-R
M
R
PK!
+6
0
SIG
L
M
R
PK!
+6
0
SIG
L
R
R
L
PK!
+6
0
SIG
=
MATRIX
OO
AUX1
PAN
L
PK!
+6
0
SIG
MUTE
4
MUTE
PK!
+6
0
SIG
MUTE
3
MUTE
PK!
+6
0
SIG
MUTE
2
MUTE
PK!
+6
0
SIG
MUTE
1
MUTE
R
EVEN
OO
L
ODD
BAL
POST
0
ST4 IN
+15
OO
+6
+6
OO
OO
+6
POST
PRE
OO
=
10
R
5
STEREO INPUTS
0
0
To LR
To CH
10
ST2 IN
-5
-5
10
+15
+15
2k5
-15
+15
HM
LM
-15
250Hz
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
POST
AUX6
+6
MUTE
R
EVEN
OO
L
ODD
BAL
EQ IN
-15
2k5
=
HM
12k
HF
-30
-20
ST2 -10
LEV
50
63 26
100Hz
HPF
6k
400
250
+15
15k
3k +15
4k
180
+15
1k
+15
OO
+6
+6
+6
POST
PRE
OO
+6
MUTE
R
EVEN
OO
OO
OO
EQ IN
-15
=
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
POST
AUX6
PAN
L
ODD
-10
ALLEN&HEATH
14
DIR OUT
Serial No.
13
16
LINE IN
48V
MIC 16
DIR OUT
15
LINE IN
48V
MIC 15
12
14
LINE IN
48V
MIC 14
DIR OUT
13
LINE IN
48V
MIC 13
11
12
LINE IN
48V
MIC 12
DIR OUT
11
LINE IN
48V
MIC 11
10
MIC 10
10
LINE IN
48V
0
20
10
DIR OUT
ENGINEERED IN ENGLAND BY ALLEN & HEATH LIMITED.
DIR OUT
MIC 8
8
LINE IN
48V
40
50
63 26
100Hz
HPF
6k
400
250
+15
15k
3k +15
4k
180
+15
OO
+6
AUX4
POST
AUX5
AUX6
POST
10
30
16
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
+15
1k
-15
OO
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
AUX2
PRE
10
30
INSERT
0
20
10
0
MIC
LINE
15
10
30
40
50
63 26
100Hz
HPF
6k
400
250
+15
15k
3k +15
4k
180
+15
+6
AUX3
+6
+6
OO
OO
+6
POST
PRE
OO
+6
R
EVEN
MUTE
GAIN
INSERT
0
20
10
0
MIC
LINE
14
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
+15
1k
-15
OO
+6
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
OO
AUX4
POST
AUX5
AUX6
POST
=
OO
PAN
L
ODD
GAIN
INSERT
4
LINE IN
48V
0
20
10
0
MIC
LINE
13
10
30
40
50
63 26
100Hz
HPF
6k
400
250
+15
15k
3k +15
4k
180
+15
+6
AUX3
+6
+6
OO
OO
+6
POST
PRE
OO
+6
R
EVEN
MUTE
GAIN
INSERT
3
LINE IN
48V
0
20
10
0
MIC
LINE
12
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
+15
1k
-15
OO
+6
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
OO
AUX4
POST
AUX5
AUX6
POST
=
OO
PAN
L
ODD
GAIN
INSERT
2
LINE IN
48V
0
20
10
0
MIC
LINE
11
10
30
40
50
63 26
100Hz
HPF
6k
400
250
+15
15k
3k +15
4k
180
+15
+6
AUX3
+6
+6
OO
OO
+6
POST
PRE
OO
+6
R
EVEN
MUTE
GAIN
INSERT
0
20
10
0
MIC
LINE
10
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
+15
1k
-15
OO
+6
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
OO
AUX4
POST
AUX5
AUX6
POST
=
OO
PAN
L
ODD
GAIN
INSERT
0
20
10
0
MIC
LINE
9
10
30
40
50
63 26
100Hz
HPF
6k
400
250
+15
15k
3k +15
4k
180
+15
+6
AUX3
+6
+6
OO
OO
+6
POST
PRE
OO
+6
PAN
R
EVEN
MUTE
PK !
L
ODD
GAIN
INSERT
0
20
10
0
MIC
LINE
8
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
+15
1k
-15
OO
+6
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
OO
AUX4
POST
AUX5
AUX6
POST
=
OO
PAN
R
EVEN
MUTE
SIG
L
ODD
GAIN
INSERT
0
20
10
0
MIC
LINE
7
10
30
40
50
63 26
100Hz
HPF
6k
400
250
+15
15k
3k +15
4k
180
+15
+6
AUX3
+6
+6
OO
OO
+6
POST
PRE
OO
+6
PAN
R
EVEN
MUTE
10
L
ODD
GAIN
INSERT
0
20
10
0
MIC
LINE
6
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
+15
1k
-15
OO
+6
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
OO
AUX4
POST
AUX5
AUX6
POST
=
OO
PAN
R
EVEN
MUTE
PK !
L
ODD
GAIN
INSERT
0
20
10
0
MIC
LINE
5
+6
AUX3
+6
+6
OO
OO
+6
POST
PRE
OO
+6
PAN
R
EVEN
MUTE
SIG
L
ODD
GAIN
INSERT
0
20
10
0
MIC
LINE
4
10
30
40
50
63 26
100Hz
HPF
6k
400
250
+15
15k
3k +15
4k
180
+15
OO
+6
AUX4
POST
AUX5
AUX6
POST
=
OO
PAN
R
EVEN
MUTE
10
L
ODD
GAIN
INSERT
0
20
10
0
MIC
LINE
3
-10 -6
HF
-15
1k
500Hz
700
12k
HM
-15
70
+15
1k
-15
OO
+6
+6
+6
POST
PRE
OO
+6
OO
OO
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
AUX2
PRE
=
OO
PAN
R
EVEN
MUTE
PK !
L
ODD
GAIN
INSERT
0
20
10
0
MIC
LINE
2
+6
AUX3
AUX4
POST
AUX5
POST
AUX6
PAN
R
EVEN
MUTE
SIG
L
ODD
GAIN
INSERT
0
MIC
LINE
1
10
30
40
50
63 26
6k
100Hz
HPF
15k
400
250
+15
+15
OO
+6
GAIN
INSERT
1
LINE IN
48V
180
3k +15
4k
0
20
10
-10 -6
0
MIC
LINE
GAIN
HF
-15
1k
500Hz
700
12k
HM
-15
70
+15
1k
-15
OO
+6
+6
+6
POST
PRE
OO
+6
OO
OO
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
AUX6
POST
=
OO
R
EVEN
MUTE
10
PFL
PK !
PFL
SIG
PFL
10
PFL
PK !
PFL
SIG
PFL
10
AFL
PK !
AFL
SIG
AFL
10
AFL
PK !
PFL
SIG
PFL
10
PFL
PK !
PFL
SIG
PFL
PK !
PFL
SIG
PFL
PK !
PFL
SIG
PFL
10
PFL
PK !
PFL
SIG
PFL
10
PFL
PK !
PFL
SIG
PFL
10
PFL
PK !
PFL
SIG
10
10
10
PK !
10
SIG
10
10
10
PK !
10
SIG
10
10
10
PK !
10
SIG
5
10
5
1-2
3-4
23
M
5
L-R
5
PK !
L-R
5
SIG
L-R
5
10
L-R
5
0
0
1-2
3-4
22
M
5
PK !
L-R
0
0
1-2
3-4
21
M
5
SIG
L-R
0
0
1-2
3-4
20
M
5
10
L-R
0
0
1-2
3-4
19
M
5
PK !
L-R
0
0
20
18
M
5
30
SIG
L-R
0
0
20
OO
17
M
5
20
30
10
L-R
0
0
20
30
OO
27-28
M
5
20
30
OO
25-26
M
20
30
OO
PK !
PFL
0
20
30
OO
16
M
10
20
30
OO
SIG
L-R
0
10
20
30
OO
15
M
10
20
30
OO
10
L-R
0
10
20
30
OO
14
M
20
30
OO
PK !
L-R
0
10
30
OO
13
M
20
OO
SIG
L-R
0
10
30
GRP 4
12
M
10
20
OO
10
L-R
0
20
30
GRP 3
11
M
20
30
OO
PK !
L-R
0
20
30
GRP 2
10
M
20
30
OO
SIG
L-R
0
20
30
GRP 1
9
M
20
30
OO
10
L-R
0
20
30
OO
8
M
20
30
OO
PK !
L-R
0
20
30
OO
7
M
20
30
OO
SIG
L-R
0
20
30
OO
6
M
20
30
OO
10
L-R
0
20
30
OO
5
M
20
30
OO
PK !
L-R
0
20
30
OO
4
M
20
30
OO
SIG
L-R
0
20
30
OO
3
M
20
30
OO
2
M
20
30
OO
M
30
OO
10
L-R
0
M
OO
PK !
L-R
0
R
OO
SIG
0
L
OO
10
L
ODD
PAN
L-R
M
1-2
3-4
1
ZED-4 BUS User Guide
9
Allen & Heath
PANEL DRAWINGS—ZED436
0
DIR OUT
DIR OUT
10
LINE IN
48V
11
LINE IN
48V
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two condit ions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
inclu ding interference that may cause u ndesired operation.
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLAC E FUSE WITH SAME TYPE AND RATING.
ATTENTION: REMPLACER PAR UN FUSIBLE STRICTEMENT IDENTIQUE EN VALEURS.
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
WARNING: THIS APPARATUS MUST BE EARTHED
12
LINE IN
48V
13
LINE IN
48V
14
LINE IN
48V
15
LINE IN
48V
16
LINE IN
48V
DIR OUT
DIR OUT
9
LINE IN
48V
DIR OUT
DIR OUT
8
LINE IN
48V
DIR OUT
DIR OUT
7
LINE IN
48V
DIR OUT
DIR OUT
6
LINE IN
48V
DIR OUT
DIR OUT
5
LINE IN
48V
DIR OUT
DIR OUT
4
LINE IN
48V
DIR OUT
DIR OUT
3
LINE IN
48V
16
2
LINE IN
48V
15
1
LINE IN
48V
-10 -6
MIC
LINE
HF
-15
1k
500Hz
700
12k
40
50
63 26
100Hz
HPF
15k
6k
3k +15
4k
400
180 +15
250
+6
HF
1k
70
-15
500Hz
1-2
3-4
63 26
50
40
10
30
100Hz
HPF
15k
6k
3k +15
4k
400
180 +15
250
+15
1k
+15
OO
+6
+6
+6
+6
+6
POST
PRE
OO
+6
PK !
SIG
10
PFL
MUTE
R
EVEN
OO
OO
OO
OO
EQ IN
-15
=
-15
35Hz
L-R
L
ODD
PAN
POST
AUX6
POST
AUX5
AUX4
AUX3
PRE
AUX2
PRE
AUX1
80Hz
LF
LM
45
HM
700
12k
-15
-10 -6
MIC
LINE
GAIN
16
40
50
63 26
6k
100Hz
HPF
15k
3k +15
4k
HM
-15
70
+15
1k
+15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
PFL
MUTE
R
EVEN
OO
OO
OO
OO
EQ IN
-15
=
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
POST
AUX6
1-2
3-4
10
SIG
PK !
L
ODD
PAN
L-R
10
30
INSERT
-10 -6
MIC
LINE
HF
-15
1k
500Hz
700
12k
400
180 +15
250
+6
GAIN
15
40
50
63 26
6k
100Hz
HPF
15k
3k +15
4k
HM
-15
70
+15
1k
+15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
PFL
MUTE
R
EVEN
OO
OO
OO
OO
EQ IN
-15
=
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
POST
AUX6
1-2
3-4
10
SIG
PK !
L
ODD
PAN
L-R
10
30
INSERT
-10 -6
MIC
LINE
HF
-15
1k
500Hz
700
12k
400
180 +15
250
+6
GAIN
14
40
50
63 26
6k
100Hz
HPF
15k
3k +15
4k
HM
-15
70
+15
1k
+15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
PFL
MUTE
R
EVEN
OO
OO
OO
OO
EQ IN
-15
=
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
POST
AUX6
1-2
3-4
10
SIG
PK !
L
ODD
PAN
L-R
10
30
INSERT
-10 -6
MIC
LINE
HF
-15
1k
500Hz
700
12k
400
180 +15
250
+6
GAIN
13
40
50
63 26
6k
100Hz
HPF
15k
3k +15
4k
HM
-15
70
+15
1k
+15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
PFL
MUTE
R
EVEN
OO
OO
OO
OO
EQ IN
-15
=
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
POST
AUX6
1-2
3-4
10
SIG
PK !
L
ODD
PAN
L-R
10
30
INSERT
-10 -6
MIC
LINE
HF
-15
1k
500Hz
700
12k
400
180 +15
250
+6
GAIN
12
40
50
63 26
6k
100Hz
HPF
15k
3k +15
4k
HM
-15
70
+15
1k
+15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
PFL
MUTE
R
EVEN
OO
OO
OO
OO
EQ IN
-15
=
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
POST
AUX6
1-2
3-4
10
SIG
PK !
L
ODD
PAN
L-R
10
30
INSERT
-10 -6
MIC
LINE
HF
-15
1k
500Hz
700
12k
400
180 +15
250
+6
GAIN
11
6k
HM
-15
70
+15
1k
+15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
PFL
MUTE
R
EVEN
OO
OO
OO
OO
EQ IN
-15
=
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
AUX6
1-2
3-4
10
SIG
PK !
L
ODD
PAN
POST
10
30
INSERT
40
50
63 26
100Hz
HPF
15k
3k +15
4k
400
180 +15
250
+15
+6
GAIN
10
-10 -6
MIC
LINE
HF
-15
1k
500Hz
700
12k
10
INSERT
6k
HM
-15
70
+15
1k
-15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
OO
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
AUX5
AUX6
POST
=
PFL
MUTE
R
EVEN
OO
10
SIG
PK !
L
ODD
PAN
POST
30
9
40
50
63 26
100Hz
HPF
15k
3k +15
4k
400
180 +15
250
+15
+6
GAIN
INSERT
-10 -6
MIC
LINE
HF
-15
1k
500Hz
700
12k
10
8
40
50
63 26
6k
100Hz
HPF
15k
3k +15
4k
HM
-15
70
+15
1k
-15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
OO
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
AUX5
AUX6
POST
=
PFL
MUTE
R
EVEN
OO
10
SIG
PK !
L
ODD
PAN
POST
30
INSERT
-10 -6
MIC
LINE
HF
-15
1k
500Hz
700
12k
400
180 +15
250
+15
+6
GAIN
7
40
50
63 26
6k
100Hz
HPF
15k
3k +15
4k
HM
-15
70
+15
1k
-15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
OO
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
AUX5
AUX6
POST
=
PFL
MUTE
R
EVEN
OO
10
SIG
PK !
L
ODD
PAN
POST
10
30
INSERT
-10 -6
MIC
LINE
HF
-15
1k
500Hz
700
12k
400
180 +15
250
+15
+6
GAIN
6
40
50
63 26
6k
100Hz
HPF
15k
3k +15
4k
HM
-15
70
+15
1k
-15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
OO
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
AUX5
AUX6
POST
=
PFL
MUTE
R
EVEN
OO
10
SIG
PK !
L
ODD
PAN
POST
10
30
INSERT
-10 -6
MIC
LINE
HF
-15
1k
500Hz
700
12k
400
180 +15
250
+15
+6
GAIN
5
40
50
63 26
6k
100Hz
HPF
15k
3k +15
4k
HM
-15
70
+15
1k
-15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
OO
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
AUX5
AUX6
POST
=
PFL
MUTE
R
EVEN
OO
10
SIG
PK !
L
ODD
PAN
POST
10
30
INSERT
-10 -6
MIC
LINE
HF
-15
1k
500Hz
700
12k
400
180 +15
250
+6
GAIN
4
40
50
63 26
6k
100Hz
HPF
15k
3k +15
4k
HM
-15
70
+15
1k
+15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
PFL
MUTE
R
EVEN
OO
OO
OO
OO
EQ IN
-15
=
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
AUX6
POST
10
30
INSERT
-10 -6
MIC
LINE
HF
-15
1k
500Hz
700
12k
400
180 +15
250
+15
+6
GAIN
3
6k
HM
-15
70
+15
1k
-15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
OO
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
AUX5
AUX6
POST
=
PAN
L
ODD
PK !
SIG
10
1-2
3-4
OFF
ON
OO
AC MAINS IN ~
100 - 240V~ 47-63Hz 60W MAX
ST3 IN
L
ST1 IN
R
L/M
L
-10
OO
-5
10
0
0
5
5
To LR
To CH
10
R
-30
-20
LEV
ST3
ST4
HF
+15
+15
+15
-15
-15
+15
-30
-20
LEV
12k
2k5
HM
LM
-15
OO
+6
+6
+6
+6
+6
POST
PRE
OO
FUSE
T1.6A L 250V 20mm
1
1
1
Serial No.
AUX
GRP
1
INSERT
MTX
+6
+6
+6
AUX
GRP
2
0
AUX
MATRIX
OUT
AUX3
OO
4
AUX4
L
OO
PAN
4
+6
SEND
USB
PLAYBACK
To LR
PFL
0
+10
AFL
L-R
M
R
AUX
AUX5
OO
5
2TRK IN
L
R
L
R
AUX
6
INSERT
INSERT
INSERT
L
R
L
R
M
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
R
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
Talk to LRM
MAIN OUT
TB MIC
Talk to AUX 1-4
MAX
M
PHONES
AUX6
OO
0
0
20
10
-10 -6
MIC
LINE
1-2
3-4
1-2
3-4
10
19
LINE IN
48V
MIC 19
20
LINE IN
48V
MIC 20
21
LINE IN
48V
MIC 21
22
LINE IN
48V
MIC 22
23
LINE IN
48V
MIC 23
24
LINE IN
48V
MIC 24
25
LINE IN
48V
MIC 25
26
LINE IN
48V
MIC 26
27
LINE IN
48V
MIC 27
28
LINE IN
48V
MIC 28
29
LINE IN
48V
MIC 29
30
LINE IN
48V
MIC 30
31
LINE IN
48V
MIC 31
32
LINE IN
48V
MIC 32
32
18
LINE IN
48V
MIC 18
DIR OUT
1-2
3-4
10
1-2
3-4
10
1-2
3-4
10
1-2
3-4
10
1-2
3-4
10
1-2
3-4
10
1-2
3-4
10
1-2
3-4
10
1-2
3-4
10
1k
500Hz
700
HM
-15
70
15k
35Hz
+15
+15
1k
400
180 +15
250
-15
45
LM
-15
1-2
3-4
+6
10
-10 -6
MIC
LINE
1k
500Hz
700
HM
-15
70
40
50
63 26
100Hz
HPF
15k
35Hz
+15
+15
1k
400
180 +15
250
-15
OO
OO
+6
+6
+6
+6
+6
POST
PRE
OO
OO
OO
EQ IN
-15
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
1-2
3-4
10
-10 -6
MIC
LINE
1k
500Hz
700
HM
-15
70
40
50
63 26
100Hz
HPF
15k
+15
1k
400
180 +15
250
35Hz
+15
OO
OO
+6
+6
+6
+6
+6
POST
PRE
OO
+6
PFL
0
MUTE
R
EVEN
OO
OO
OO
EQ IN
-15
=
-15
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
POST
AUX6
1-2
3-4
29
-10 -6
MIC
LINE
-15
1k
500Hz
700
HM
-15
70
40
50
63 26
100Hz
HPF
15k
6k
3k +15
4k
35Hz
+15
+15
1k
400
180 +15
250
-15
OO
OO
+6
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
EQ IN
-15
45
LM
LF
80Hz
PRE
AUX1
AUX2
POST
AUX6
POST
AUX5
AUX4
AUX3
PRE
=
PFL
0
MUTE
R
EVEN
OO
SIG
PK !
L
ODD
PAN
L-R
10
M
1-2
3-4
30
-10 -6
MIC
LINE
-15
1k
500Hz
700
HM
-15
70
40
50
63 26
100Hz
HPF
15k
6k
3k +15
4k
35Hz
+15
+15
1k
400
180 +15
250
-15
OO
OO
+6
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
EQ IN
-15
45
LM
LF
80Hz
PRE
AUX1
AUX2
POST
AUX6
POST
AUX5
AUX4
AUX3
PRE
=
PFL
0
MUTE
R
EVEN
OO
SIG
PK !
L
ODD
PAN
L-R
10
M
1-2
3-4
31
10
-10 -6
MIC
LINE
-15
1k
70
-15
500Hz
700
HM
M
40
50
63 26
100Hz
HPF
15k
6k
3k +15
4k
+15
1k
400
180 +15
250
+15
OO
+6
+6
+6
+6
EQ IN
OO
OO
+6
+6
10
20
PFL
0
MUTE
R
EVEN
OO
POST
PRE
OO
OO
-15
=
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
POST
AUX6
PAN
SIG
PK !
L
ODD
L-R
1-2
32
3-4
10
30
32
1k
LF
80Hz
OO
+6
EQ IN
OO
AUX4
POST
AUX5
POST
AUX6
+6
SIG
PK !
L
ODD
PAN
L-R
6k
GAIN
INSERT
15k
+15
400
180 +15
250
35Hz
+15
PRE
AUX1
PRE
AUX2
AUX3
+6
+6
OO
OO
+6
POST
PRE
OO
=
OO
R
EVEN
MUTE
PFL
3k +15
4k
10
30
31
40
50
63 26
100Hz
HPF
-15
GAIN
INSERT
1k
500Hz
700
HM
-15
70
-15
45
LM
-15
+6
EQ IN
OO
+6
AUX4
POST
AUX5
POST
AUX6
+6
SIG
PK !
L
ODD
PAN
L-R
6k
10
30
30
15k
1k
LF
80Hz
PRE
AUX1
PRE
AUX2
OO
+6
+6
OO
OO
+6
POST
PRE
OO
=
OO
R
EVEN
MUTE
PFL
3k +15
4k
GAIN
INSERT
-10 -6
MIC
LINE
-15
10
30
29
1k
500Hz
700
+15
400
180 +15
250
35Hz
+15
+6
AUX3
AUX4
POST
AUX5
POST
AUX6
+6
SIG
PK !
L
ODD
PAN
L-R
6k
GAIN
INSERT
6k
HM
-15
70
-15
OO
+6
EQ IN
-15
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
OO
+6
+6
OO
OO
+6
POST
PRE
OO
=
OO
R
EVEN
MUTE
PFL
3k +15
4k
10
30
28
40
50
63 26
100Hz
HPF
-15
GAIN
INSERT
1k
+6
AUX3
AUX4
POST
AUX5
POST
AUX6
+6
SIG
PK !
L
ODD
PAN
L-R
6k
10
30
27
15k
+15
400
180 +15
250
35Hz
+15
OO
+6
=
OO
R
EVEN
MUTE
PFL
3k +15
4k
GAIN
INSERT
-10 -6
MIC
LINE
-15
10
30
26
1k
500Hz
700
HM
-15
70
-15
OO
+6
+6
+6
POST
PRE
OO
OO
OO
EQ IN
-15
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
POST
AUX6
+6
SIG
PK !
L
ODD
PAN
L-R
6k
GAIN
INSERT
50
40
10
25
+6
=
PFL
MUTE
R
EVEN
OO
SIG
PK !
L
ODD
PAN
L-R
3k +15
4k
100Hz
HPF
63 26
30
INSERT
-15
-10 -6
MIC
LINE
GAIN
24
50
40
10
INSERT
1k
OO
+6
3k +15
4k
100Hz
HPF
63 26
30
23
-15
-10 -6
MIC
LINE
GAIN
INSERT
+15
400
180 +15
250
6k
100Hz
HPF
63 26
50
40
10
30
22
-10 -6
MIC
LINE
GAIN
INSERT
100Hz
HPF
63 26
50
40
10
30
21
-10 -6
MIC
LINE
GAIN
INSERT
100Hz
HPF
63 26
50
40
10
30
20
-10 -6
MIC
LINE
GAIN
INSERT
100Hz
HPF
63 26
50
40
10
30
19
-10 -6
MIC
LINE
GAIN
INSERT
100Hz
HPF
63 26
50
40
10
30
18
-10 -6
MIC
LINE
GAIN
INSERT
100Hz
HPF
63 26
50
40
10
30
17
17
LINE IN
48V
MIC 17
31
0
20
10
DIR OUT
0
30
0
20
10
DIR OUT
0
29
0
20
10
DIR OUT
0
28
0
20
10
DIR OUT
0
27
0
20
10
DIR OUT
0
26
0
20
10
DIR OUT
0
25
0
20
10
DIR OUT
0
24
0
20
10
DIR OUT
0
23
0
20
10
DIR OUT
0
22
0
20
10
DIR OUT
0
21
0
20
10
DIR OUT
0
20
0
20
10
DIR OUT
0
19
0
20
10
DIR OUT
0
18
0
20
10
DIR OUT
0
17
0
20
10
DIR OUT
0
-10 -6
MIC
LINE
GAIN
INSERT
63 26
50
40
10
30
100Hz
HPF
500Hz
700
HM
-15
70
35Hz
+15
OO
+6
+6
+6
POST
PRE
OO
PFL
MUTE
R
EVEN
+6
SIG
PK !
L
ODD
OO
OO
OO
EQ IN
-15
=
-15
45
LM
LF
80Hz
PRE
AUX1
AUX2
L-R
PAN
POST
AUX6
POST
AUX5
AUX4
AUX3
PRE
15k
HF
+6
3k +15
4k
HF
-15
HF
1k
OO
+6
1k
HF
+15
400
180 +15
250
6k
HF
500Hz
700
HM
-15
70
35Hz
+15
OO
+6
+6
+6
POST
PRE
OO
PFL
MUTE
R
EVEN
+6
SIG
PK !
L
ODD
OO
OO
OO
EQ IN
-15
=
-15
45
LM
LF
80Hz
PRE
AUX1
AUX2
L-R
PAN
POST
AUX6
POST
AUX5
AUX4
AUX3
PRE
15k
HF
+6
3k +15
4k
HF
-15
HF
1k
OO
+6
1k
HF
+15
400
180 +15
250
6k
HF
500Hz
700
HM
-15
70
35Hz
+15
OO
+6
+6
+6
POST
PRE
OO
PFL
MUTE
R
EVEN
+6
SIG
PK !
L
ODD
OO
OO
OO
EQ IN
-15
=
-15
45
LM
LF
80Hz
PRE
AUX1
AUX2
L-R
PAN
POST
AUX6
POST
AUX5
AUX4
AUX3
PRE
15k
HF
+6
3k +15
4k
HF
-15
HF
1k
OO
+6
1k
HF
+15
400
180 +15
250
6k
HF
500Hz
700
HM
-15
70
35Hz
+15
OO
+6
+6
+6
POST
PRE
OO
PFL
MUTE
R
EVEN
+6
SIG
PK !
L
ODD
OO
OO
OO
EQ IN
-15
=
-15
45
LM
LF
80Hz
PRE
AUX1
AUX2
L-R
PAN
POST
AUX6
POST
AUX5
AUX4
AUX3
PRE
15k
HF
+6
3k +15
4k
12k
-15
12k
1k
OO
+6
1k
12k
+15
400
180 +15
250
6k
12k
500Hz
700
HM
-15
70
35Hz
+15
OO
+6
+6
+6
POST
PRE
OO
PFL
MUTE
R
EVEN
+6
SIG
PK !
L
ODD
OO
OO
OO
EQ IN
-15
=
-15
45
LM
LF
80Hz
PRE
AUX1
AUX2
L-R
PAN
POST
AUX6
POST
AUX5
AUX4
AUX3
PRE
15k
12k
+6
3k +15
4k
12k
-15
12k
1k
OO
+6
1k
12k
+15
400
180 +15
250
6k
12k
500Hz
700
HM
-15
70
35Hz
+15
OO
+6
+6
+6
POST
PRE
OO
PFL
MUTE
R
EVEN
+6
SIG
PK !
L
ODD
OO
OO
OO
EQ IN
-15
=
-15
45
LM
LF
80Hz
PRE
AUX1
AUX2
L-R
PAN
POST
AUX6
POST
AUX5
AUX4
AUX3
PRE
15k
12k
+6
3k +15
4k
12k
-15
12k
1k
OO
+6
1k
12k
6k
12k
+15
400
180 +15
250
15k
3k +15
4k
12k
-15
500Hz
700
1k
12k
HM
-15
70
35Hz
+15
OO
+6
+6
+6
POST
PRE
OO
PFL
MUTE
R
EVEN
+6
SIG
PK !
L
ODD
OO
OO
OO
EQ IN
-15
=
-15
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
POST
AUX5
AUX4
MAX
L-R
PAN
POST
AUX6
LR
M
AFL
+10
0
PFL/AFL ACTIVE
L
POWER
MIN
TB
LEVEL
2TRK OUT
0
+10
AFL
PHONES
LEVEL
MIN
GAIN
ALLEN&HEATH
AUX
AUX OUT
3
4
0
+10
AFL
L-R
M
R
=
ALLEN&HEATH
OO
PLAYBACK
LEVEL
All up =LR post
LR
pre-fade
AUX
5-6
AUX
1-2
MTX
1-2
USB SEND SOURCE
PLAYBACK SOURCE
2TRK
USB
ST3 IN
USB
ST3 INPUT SOURCE
RETURN
INSERT
GRP
3
3
=
INSERT
GRP
GROUP OUT
2
2
+6
2
INSERT
MTX
+6
+6
OO
OO
OO
+6
+6
+6
OO
OO
2
M
L-R
AFL
+10
AFL
+6
+6
OO
OO
AUX2
OO
=
MATRIX
OO
LEVEL
M
R
L
4
GRP
3
GRP
2
GRP
1
OO
+6
GRP
4
+6
+6
OO
1
AFL
+6
+6
OO
OO
OO
1
2
GRP
3
GRP
GRP
L
R
OO
OO
LEVEL
M
OO
GRP
0
+10
AFL
L-R
M
L
PK!
+6
0
SIG
PAN
M
R
PK!
+6
0
SIG
L
R
PAN
PK!
+6
0
SIG
R
L
=
MATRIX
AUX1
L
OO
PAN
PK!
+6
0
SIG
MUTE
4
MUTE
PK!
+6
0
SIG
MUTE
3
MUTE
PK!
+6
0
SIG
MUTE
2
MUTE
PK!
+6
0
SIG
MUTE
AFL
1
MUTE
AFL
10
AFL
10
AFL
10
PFL
R
EVEN
+6
OO
OO
OO
EQ IN
-15
250Hz
LF
80Hz
PRE
AUX1
AUX2
PRE
-5
ST4 IN
5
STEREO INPUTS
0
10
5
To LR
To CH
0
10
+6
AUX3
AUX4
POST
AUX5
AUX6
POST
=
10
OO
SIG
PK !
L
ODD
BAL
L-R
OO
R
-5
-5
ST2 IN
L/M
R
-10
ENGINEERED IN ENGLAND BY ALLEN & HEATH LIMITED.
I
OO
-10
0
-30
-20
LEV
HF
+15
+15
+15
-15
-15
+15
-30
-20
ST2 -10
LEV
12k
2k5
HM
LM
-15
OO
+6
+6
+6
+6
POST
PRE
OO
PFL
MUTE
R
EVEN
+6
OO
OO
OO
EQ IN
-15
250Hz
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
AUX6
POST
=
10
OO
SIG
PK !
L
ODD
BAL
L-R
1-2
3-4
28
M
10
PFL
MUTE
R
EVEN
OO
L
ODD
PAN
POST
10
30
INSERT
40
50
63 26
100Hz
HPF
15k
3k +15
4k
400
180 +15
250
+6
GAIN
2
-10 -6
MIC
LINE
HF
-15
1k
500Hz
700
12k
10
30
INSERT
6k
HM
-15
70
+15
1k
+15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
MUTE
R
EVEN
OO
OO
OO
OO
EQ IN
-15
=
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
POST
AUX6
PAN
L
ODD
PK !
SIG
10
L-R
0
10
PFL
L-R
ST1
14
0
20
10
13
0
12
0
20
10
11
0
10
0
20
10
9
0
8
0
20
10
7
0
6
0
20
10
5
0
4
0
20
10
3
0
2
0
20
10
1
0
MIC 16
0
20
10
MIC 15
0
MIC 14
0
20
10
MIC 13
0
MIC 12
0
20
10
MIC 11
0
MIC 10
0
20
10
MIC 9
0
MIC 8
0
20
10
MIC 7
0
MIC 6
0
20
10
MIC 5
0
MIC 4
0
20
10
MIC 3
0
MIC 2
0
20
10
MIC 1
0
1
+6
GAIN
INSERT
63 26
50
40
10
30
100Hz
HPF
+15
400
180 +15
250
15k
3k +15
4k
0
20
10
-10 -6
MIC
LINE
GAIN
HF
-15
1k
500Hz
700
12k
HM
-15
70
+15
1k
-15
OO
+6
+6
+6
+6
POST
PRE
OO
+6
OO
OO
OO
EQ IN
-15
35Hz
45
LM
LF
80Hz
PRE
AUX1
PRE
AUX2
AUX3
AUX4
POST
AUX5
AUX6
POST
=
OO
R
EVEN
MUTE
PK !
SIG
10
1-2
3-4
27
M
10
PFL
L-R
0
10
10
1-2
3-4
26
M
5
L-R
0
5
1-2
3-4
25
M
5
L-R
0
5
L-R
1-2
3-4
24
M
5
L-R
0
5
L-R
1-2
3-4
23
M
5
L-R
0
0
1-2
3-4
22
M
5
0
0
1-2
3-4
21
M
5
0
0
30
20
M
5
20
OO
0
0
20
30
19
M
5
20
30
OO
0
0
20
30
OO
18
M
5
20
30
OO
0
0
20
30
OO
17
M
5
20
30
OO
0
0
20
30
OO
35-36
M
5
20
30
OO
33-34
M
20
30
OO
0
20
30
OO
16
M
20
30
OO
0
20
30
OO
15
M
20
30
OO
0
10
20
30
OO
14
M
10
20
30
OO
0
10
20
30
OO
13
M
10
20
30
OO
0
20
30
OO
12
M
10
30
OO
0
20
OO
11
M
10
30
GRP 4
0
10
20
OO
10
M
20
30
GRP 3
0
20
30
OO
9
M
20
30
GRP 2
0
20
30
OO
8
M
20
30
GRP 1
0
20
30
OO
7
M
20
30
OO
0
20
30
OO
6
M
20
30
OO
0
20
30
OO
5
M
20
30
OO
0
20
30
OO
4
M
20
30
OO
0
20
30
OO
3
M
20
30
OO
0
20
30
OO
2
M
20
30
OO
0
20
30
OO
M
20
30
OO
0
30
OO
M
OO
R
OO
L
OO
SIG
PK !
L
ODD
PAN
L-R
M
1-2
3-4
1
ZED-4 BUS User Guide
10
Allen & Heath
INTRODUCTION TO THE ZED-4 BUS MIXERS
A Technical Overview:
The Allen & Heath ZED-4 mixer has been carefully and lovingly designed in the beautiful county of Cornwall in the UK and is
manufactured alongside a wide range of professional audio mixing consoles. Many of the components used in ZED are exactly
the same as in the larger Allen & Heath products and the construction methods are also very similar — utilising individual vertically mounted channel circuit boards with each rotary control fixed with a metal nut to the front panel. This provides a very
robust product that will resist damage and give years of reliable use. It also makes servicing much easier should it be required,
with the ability to remove one particular channel from the mixer at a time, or easily change a fader.
The audio circuitry is based on years of continual development and refinement, the performance of all the elements within the
mixer scrutinised and perfected to ensure the very best sound quality possible.
Mic/Line Pre-amps:
Based on the pre-amps from the PA series, the ZED series pre-amps use a two stage design, with carefully controlled amounts
of gain in each stage. When amplifying the signal from the XLR input, the gain range is huge — 69dB of range to be exact —
and is very evenly distributed around the gain control, meaning better control of signal level. Most of the gain comes from the
first stage, so unwanted noise is kept to a minimum. There is no “pad” switch, or pad circuit — line level signals are simply
plugged into the second stage of the pre-amp by using the line input jack socket. This has the great advantage of lower noise
when using the line input. (It is common to attenuate line level signals, the amplify them back up again which can give more
noise or hiss).
EQ:
The ZED-4 series mixers are equipped with a 4-band equaliser circuit on each input, based closely on the acclaimed GL2400
EQ. The frequency and response of each has been carefully chosen to give the maximum performance when using the EQ on a
variety of sources.
AUX system:
Six auxiliary sends are provided, two pre-fade, two post fade, and two switched pre or post fade. The Aux master level controls are grouped nicely together in the master section and have AFL (after fade listen) switches for monitoring.
Groups:
The four sub-groups can be used for easy control of groups of inputs, or for applying signal processing such as compression to
groups of signals using the Group Insert connector. The groups have individual outputs and can also be sub-mixed to the main
L-R and Mono mixes.
Main Mix:
In addition to the main L-R stereo bus, there is a Mono bus which can be routed to individually, ideal for feeding low frequency
speaker systems, or creating a mono PA mix.
Mono and Stereo Channels:
The ZED-420, 428 and 436 models have a full complement of 16, 24 and 32 mono inputs respectively, plus two stereo channels, maximising the number of inputs you get. The Stereo channels are dual, so you can get 4 stereo inputs to mix before you
need to use any mono channels.
USB:
Getting audio to and from a computer easily is now a common requirement for live sound and music production. The way we
have implemented this on ZED is super-flexible and super-easy! No longer do you need to fiddle around the back of your PC
to get to the soundcard inputs, only to find that the levels are all wrong and noisy. Just plug in a USB lead to your ZED, select
the USB routing on the mixer and the device on your computer and that’s it! Quality audio to and from your PC or MAC.
As you can tell, we’re very proud of this product we hope you like it too!
Allen & Heath
11
ZED-4 BUS User Guide
SPECIFICATIONS
Operating Levels
Inputs
Mono channel (XLR) Input
+6 to –63dBu for nominal (+17dBu in max)
Mono channel Line Input (Jack socket)
+10 to –26dBu (+30dBu maximum)
Insert point (TRS Jack socket)
0dBu nominal +21dBu maximum
Stereo Input (Jack sockets)
0dBu nominal (control = Off to +10dB)
Stereo input (phono sockets)
0dBu nominal (control = Off to +10dB)
2 Track Input (phono sockets)
0dBu nominal +21dBu maximum
Outputs
L, R & Mono Outputs (XLR)
+4dBu nominal. +27dBu maximum.
L, R & M Insert (TRS Jack socket)
-2dBu nominal +21dBu maximum
Group Outputs (Jack sockets)
+4dBu nominal. +27dBu maximum.
Group Insert (TRS Jack socket)
-2dBu nominal +21dBu maximum
Aux Outputs (Jack sockets)
-2dBu nominal +21dBu maximum (Bal Option +4)
Matrix Outputs (TRS Jack socket)
-2dBu nominal. +21dBu maximum. (Bal Option +4)
2 Track Output (phono sockets)
0dBu nominal. +21dBu maximum.
Direct Out (TRS Jack socket)
0dBu nominal. +21dBu maximum.
Headroom
Analogue Headroom from nominal (0Vu)
21dB
USB in & out headroom from nominal (0Vu)
14dB
Frequency Response
Mic in to Mix L/R Out, 30dB gain
+0.5/-1dB 20Hz to 20kHz.
Line in to Mix L/R out 0dB gain
+0.5/-1dB 10Hz to 30kHz
Stereo in to Mix L/R out
+0.5/-1dB 10Hz to 30kHz
THD+n
Mic in to Mix L/R Out, 0dB gain 1kHz +10dBu out
0.004%
Mic in to Mix L/R Out, 30dB gain 1kHz
0.014%
Line in to Mix L/R out 0dB gain 0dBu 1kHz
0.005%
Stereo in to Mix L/R out 0dB gain +10dBu 1kHz
0.003%
USB Audio CODEC (Coder/Decoder)
USB Audio In/Out
USB 1.1 compliant 16bit.
Sample Rate
32, 44.1, or 48kHz
Noise
Mix Noise, LR out, 16 channels routed, Ref +4dBu, 22-22kHz
-90dB (-86dBu)
Mix Noise, LR out, 24 channels routed, Ref +4dBu, 22-22kHz
-89dB (-85dBu)
Mix Noise, LR out, 32 channels routed, Ref +4dBu, 22-22kHz
-88dB (-84dBu)
Mic Pre EIN @ max gain 150R input Z 22-22kHz
Allen & Heath
-127dBu
12
ZED-4 BUS User Guide
3
R2
50
120
129
Dimensions
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
MIC 1
MIC 2
MIC 3
MIC 4
MIC 5
MIC 6
MIC 7
MIC 8
MIC 9
MIC 10
MIC 11
MIC 12
MIC 13
MIC 14
MIC 15
MIC 16
DIR OUT
AUX OUT
ST1 IN
ST3 IN
L
L
R
R
AUX
1
AUX
GRP
1
GRP 2
2
A UX
3
AUX
4
3
GRP
4
AUX
5
AUX
6
GRP
INSERT
L
48V
LINE IN
48V
LINE IN
1
48V
LINE IN
2
INSERT
48V
LINE IN
4
INSERT
2
48V
LINE IN
3
INSERT
1
48V
LINE IN
5
INSERT
3
48V
LINE IN
6
INSERT
4
48V
LINE IN
7
INSERT
5
48V
LINE IN
8
INSERT
6
48V
LINE IN
9
INSERT
7
INSERT
8
48V
LINE IN
48V
LINE IN
48V
LINE IN
48V
LINE IN
48V
LINE IN
L/M
1
INSERT
11
12
13
14
15
16
INSERT
INSERT
INSERT
INSERT
INSERT
I NSERT
10
11
12
13
14
15
16
ST2 IN
ST4 IN
R
R
2
INSERT
INSERT
3
INSERT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
DIR OUT
19
20
21
22
23
24
25
26
27
28
29
30
31
32
MIC 19
MIC 20
MIC 21
MIC 22
MIC 23
MIC 24
MIC 25
MIC 26
MIC 27
MIC 28
MIC 29
MIC 30
MIC 31
MIC 32
INSERT
R
INSERT
M
R
L/M
LINE IN
10
INSERT
9
DIR OUT
18
MIC 18
2TRK IN
L
48V
DIR OUT
17
MIC 17
MAIN OUT
L
GROUP OUT
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
R
4
LINE IN
LINE I N
LINE IN
LINE I N
LINE I N
LINE IN
LINE I N
LINE IN
LINE I N
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
M
2TRK OUT
L
MTX
1
MTX 2
USB
MATRIX
OUT
STEREO INPUTS
RETURN
SEN D
32
R
PHONES
GAIN
0
20
10
10
30
0
40
MIC
LINE
50
-10 -6
63 26
GAIN
0
20
10
10
30
0
40
MIC
LINE
50
-10 -6
63 26
HPF
1k
-10 -6
63 26
1k
15k
10
30
40
50
-10 -6
63 26
40
50
-10 -6
63 26
1k
15k
10
30
40
50
-10 -6
63 26
40
50
-10 -6
63 26
1k
15k
10
30
40
50
-10 -6
63 26
700
HM
10
30
40
50
-10 -6
63 26
40
50
-10 -6
63 26
1k
15k
10
30
40
50
-10 -6
63 26
40
50
-10 -6
63 26
1k
15k
10
30
40
50
-10 -6
63 26
40
50
-10 -6
63 26
1k
15k
10
30
40
50
-10 -6
63 26
1k
15k
-10 -6
63 26
18 0
+15
LM
-15
25 0
35Hz
18 0
70
40 0
1k
+15
LM
-15
25 0
45
35Hz
18 0
70
40 0
1k
+15
LM
-15
25 0
45
35Hz
18 0
70
40 0
1k
+15
LM
-15
25 0
45
35Hz
18 0
70
40 0
1k
+15
LM
-15
25 0
45
35Hz
18 0
70
40 0
1k
+15
LM
-15
25 0
45
35Hz
18 0
70
40 0
1k
+15
LM
-15
25 0
45
35Hz
18 0
70
40 0
1k
+15
LM
-15
25 0
45
35Hz
18 0
70
40 0
1k
+15
LM
-15
250
45
35Hz
18 0
70
40 0
1k
+15
LM
-15
25 0
45
35Hz
18 0
70
40 0
1k
+15
-15
25 0
45
LM
35Hz
18 0
70
40 0
1k
+15
LM
-15
250
45
35Hz
18 0
70
40 0
1k
+15
LM
-15
25 0
45
35Hz
180
70
40 0
1k
+15
LM
-15
250
45
35Hz
18 0
70
40 0
1k
700
HM
6k
500 Hz
To LR
To CH
OO
10
-15
+15
-15
+15
HF
560mm
(22.1 inches)
+15
LF
-15
+15
LF
80Hz
-15
+15
-15
+15
+15
+15
+15
+15
-15
+15
+15
-15
+15
+15
-15
+15
+15
-15
+15
+15
-15
+15
+15
-15
+15
-15
+15
+15
-15
+15
-15
+15
+15
1k
-15
LM
+15
35Hz
1k
LM
+15
-15
AUX1
PRE
+15
+6
OO
+6
OO
+6
OO
+6
AUX2
PRE
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
OO
+6
OO
+6
AUX2
PRE
AUX3
+1 5
OO
+6
OO
+6
OO
+6
+6
OO
+6
OO
+6
OO
+6
AUX2
PRE
AUX3
+6
OO
+6
+6
OO
+6
-15
+1 5
80Hz
+6
OO
+6
OO
POST
PRE
AUX5
POST
PRE
AUX5
POST
POST
PRE
AUX5
POST
POST
PRE
AUX5
POST
POST
PRE
AUX5
POST
POST
PRE
AUX5
POST
POST
PRE
AUX5
POST
POST
PRE
AUX5
POST
POST
PRE
AUX5
POST
POST
PRE
AUX5
POST
POST
PRE
AUX5
POST
+6
OO
POST
PRE
AUX5
POST
+6
OO
OO
+6
OO
+6
M
+6
POST
PRE
+6
OO
POST
PRE
AUX5
POST
+6
OO
+6
+6
OO
+6
OO
+6
+6
POST
PRE
+6
OO
POST
PRE
POST
PRE
AUX5
POST
+6
OO
=
=
PAN
L
ODD
=
PAN
R
EVEN
L
ODD
MUTE
L
ODD
MUTE
PFL
0
PFL
0
0
M
L
ODD
PFL
PFL
0
M
L
ODD
PFL
PFL
PFL
0
PFL
PFL
0
PFL
0
M
PFL
0
M
PFL
0
M
PFL
0
M
0
M
PFL
0
L
ODD
PFL
AFL
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
+1 6
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
L
R
LM
3 5Hz
PFL
0
M
1- 2
1-2
1- 2
1-2
1-2
1- 2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
3-4
3- 4
3-4
3- 4
3-4
3-4
3- 4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
AUX4
0
OO
+10
0
OO
+10
AFL
AFL
L-R
L-R
L-R
L-R
M
M
=
AUX5
0
OO
+10
GAIN
63 26
10
30
0
40
MIC
LINE
50
-10 -6
63 26
HPF
GAIN
0
20
10
30
40
50
-10 -6
GAIN
63 26
10
30
0
40
MIC
LINE
50
-10 -6
63 26
HPF
1 00Hz
0
20
10
30
40
50
-10 -6
63 26
GAIN
30
40
50
-10 -6
63 26
GAIN
10
30
0
40
MIC
LINE
50
-10 -6
63 26
HPF
100 Hz
0
20
10
30
40
50
-10 -6
GAIN
63 26
10
30
0
40
MIC
LINE
50
-10 -6
63 26
HPF
0
20
10
10
30
0
40
MIC
LIN E
50
-10 -6
63 26
0
20
10
10
30
0
40
MIC
LINE
50
-10 -6
63 26
0
20
10
40
50
1k
3k +1 5
4k
7 00
1 5k
HM
- 15
1k
6k
5 00Hz
1 5k
3k +1 5
4k
7 00
HM
- 15
1k
6k
5 00Hz
3k +1 5
4k
7 00
1 5k
HM
- 15
1k
6k
5 00Hz
1 5k
3k +1 5
4k
7 00
HM
-1 5
1k
6k
5 00Hz
1 5k
3k +1 5
4k
7 00
HM
- 15
1k
6k
5 00Hz
1 5k
3k +1 5
4k
7 00
HM
-1 5
1k
6k
5 00Hz
15 k
3k +1 5
4k
7 00
HM
-1 5
1k
6k
5 00Hz
1 5k
3k +1 5
4k
7 00
HM
- 15
-10 -6
1k
6k
5 00Hz
1 5k
7 00
HM
-1 5
1 00Hz
HF
12 k
1k
6k
5 00Hz
3k +1 5
4k
7 00
15 k
HM
- 15
12 k
1k
6k
5 00Hz
1 5k
3k +1 5
4k
7 00
HM
-1 5
1k
6k
5 00Hz
15 k
3k +1 5
4k
7 00
HM
-1 5
-15
180
70
400
+15
- 15
2 50
45
180
70
400
+15
-15
250
45
180
70
400
+15
- 15
250
45
180
70
400
+15
-15
2 50
45
180
70
400
+15
- 15
250
45
1 80
70
400
+15
- 15
2 50
45
180
70
400
+15
- 15
250
45
180
70
400
+15
- 15
2 50
45
180
70
400
+15
- 15
2 50
45
180
70
400
+15
- 15
2 50
45
1 80
70
400
+15
- 15
2 50
45
180
70
400
1k
6k
5 00Hz
+15
- 15
2 50
45
1 5k
1 80
70
400
6k
5 00Hz
- 15
2 50
LM
+15
3 5Hz
1k
-15
LF
LM
+15
+15
3 5Hz
1k
- 15
LF
8 0Hz
-15
LM
+15
+15
3 5Hz
1k
-15
LF
8 0Hz
-15
EQ IN
AUX1
LM
+15
+15
3 5Hz
1k
- 15
LF
8 0Hz
- 15
EQ IN
AUX1
LM
+15
+15
3 5Hz
1k
-15
LF
80 Hz
-15
EQ IN
LM
+15
+15
3 5Hz
1k
- 15
LF
8 0Hz
- 15
EQ IN
LM
+15
+15
3 5Hz
1k
- 15
LF
80 Hz
-15
EQ IN
LM
+15
+15
3 5Hz
1k
- 15
LF
80 Hz
- 15
EQ IN
LM
+15
+15
3 5Hz
1k
- 15
LF
80 Hz
- 15
EQ IN
LM
+15
+15
3 5Hz
1k
- 15
LF
80 Hz
- 15
EQ IN
LM
+15
+15
3 5Hz
1k
- 15
LF
80 Hz
- 15
EQ IN
LM
+15
+15
3 5Hz
1k
- 15
LF
80 Hz
- 15
EQ IN
LM
+15
+15
3 5Hz
1k
- 15
LF
80 Hz
- 15
EQ IN
LM
+15
+15
3 5Hz
+15
- 15
EQ IN
+6
OO
+6
R
+6
PHONES
LEVEL
MAX
+6
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
1
2
3
4
L
R
M
AFL
+6
AUX1
PRE
OO
+6
OO
+6
AUX2
AUX1
PRE
OO
+6
OO
+6
AUX2
PRE
+6
OO
+6
+6
OO
+6
+6
OO
+6
+6
OO
+6
+6
OO
+6
+6
OO
+6
+6
OO
+6
+6
OO
+6
PRE
OO
+6
OO
+6
AUX2
PRE
AUX3
AUX1
PRE
OO
AUX2
PRE
AUX3
AUX1
PRE
OO
AUX2
PRE
AUX3
AUX1
PRE
OO
AUX2
PRE
AUX3
AUX1
PRE
OO
AUX2
PRE
AUX3
AUX1
PRE
OO
AUX2
PRE
AUX3
AUX1
PRE
OO
AUX2
PRE
AUX3
AUX1
PRE
OO
AUX2
PRE
AUX3
AUX1
PRE
OO
AUX2
PRE
AUX3
MUTE
MUTE
+6
10
10
5
5
5
0
0
PFL
PFL
PFL
0
OO
+6
OO
+6
OO
+6
OO
+6
AUX2
PRE
AUX3
PRE
AUX3
AUX3
PFL
PFL
PFL
PFL
PFL
PFL
PFL
SIG
10
10
L-R
0
M
5
5
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
10
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
3-4
M
0
L-R
10
M
0
PFL
PK !
SIG
10
5
M
0
PFL
PK !
SIG
L-R
M
0
M
0
M
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
2
3
4
5
6
7
8
9
20
10
20
11
20
12
13
14
15
20
16
33-34
35-36
GRP 1
GRP 2
GRP 3
GRP 4
L
R
M
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R
E VEN
MUTE
10
M
0
L
ODD
MUTE
PK !
10
L-R
=
PAN
R
E VEN
5
M
0
PFL
SIG
10
=
L
ODD
+6
OO
PAN
R
E VEN
MUTE
PK !
SIG
L-R
+6
10
M
0
MUTE
PK !
10
L-R
=
L
ODD
+6
POST
OO
PAN
R
E VEN
OO
AUX6
5
M
0
PFL
SIG
10
L-R
=
L
ODD
+6
OO
POST
+6
POST
PRE
POST
AUX6
OO
PAN
R
E VEN
MUTE
PK !
SIG
10
L
ODD
MUTE
PK !
SIG
L-R
=
PAN
R
E VEN
+6
OO
POST
+6
AUX5
POST
AUX6
OO
POST
PRE
AUX5
10
M
0
=
L
ODD
+6
OO
+6
OO
PAN
R
E VEN
MUTE
PK !
10
L-R
+6
POST
PRE
POST
POST
+6
OO
AUX5
AUX6
AUX4
5
M
0
=
L
ODD
+6
OO
POST
OO
POST
PRE
POST
AUX6
+6
OO
AUX5
+6
OO
AUX4
10
M
0
PFL
SIG
10
L-R
+6
PAN
R
E VEN
MUTE
PK !
SIG
10
=
L
ODD
+6
OO
POST
OO
PAN
R
E VEN
MUTE
PK !
SIG
L-R
+6
POST
PRE
POST
AUX6
+6
OO
AUX5
+6
OO
AUX4
5
M
0
=
L
ODD
+6
OO
POST
OO
PAN
R
E VEN
MUTE
PK !
10
L-R
+6
POST
PRE
POST
AUX6
+6
OO
AUX5
+6
OO
AUX4
10
M
0
=
L
ODD
+6
OO
POST
+6
POST
PRE
POST
+6
OO
AUX4
OO
AUX5
AUX6
OO
PAN
MUTE
SIG
10
L-R
+6
OO
R
E VEN
+6
OO
POST
+6
POST
PRE
POST
+6
OO
AUX4
OO
AUX5
AUX6
=
L
ODD
PK !
SIG
10
L-R
+6
PAN
R
E VEN
MUTE
PK !
SIG
10
=
L
ODD
+6
OO
POST
+6
POST
PRE
POST
+6
OO
AUX4
OO
AUX5
AUX6
OO
PAN
R
E VEN
MUTE
PK !
SIG
L-R
0
=
L
ODD
+6
OO
PAN
R
E VEN
MUTE
PK !
10
+6
+6
OO
POST
+6
POST
PRE
POST
+6
OO
AUX4
OO
AUX5
AUX6
POST
=
L
ODD
+6
OO
+6
POST
PRE
POST
+6
OO
AUX4
OO
AUX5
AUX6
OO
PAN
MUTE
PFL
10
5
+6
OO
R
E VEN
+6
OO
+6
POST
PRE
POST
POST
+6
OO
AUX4
OO
AUX5
AUX6
=
L
ODD
SIG
10
5
+6
PAN
R
E VEN
+6
OO
+6
POST
PRE
POST
+6
OO
AUX4
OO
AUX5
POST
OO
+6
OO
AUX6
MUTE
AFL
10
5
+6
+6
OO
AUX4
POST
PRE
+6
OO
+6
OO
POST
=
10
0
+6
AUX4
AUX5
POST
L
ODD
+6
OO
AUX6
PAN
5
0
+6
OO
PRE
AUX3
POST
PRE
+6
OO
10
0
AUX1
PRE
OO
AUX2
OO
POST
POST
MUTE
+6
AUX4
AUX5
POST
PK!
+6
0
SIG
AFL
+6
OO
AUX5
R
MUTE
+6
OO
PRE
AUX3
POST
PRE
MIN
PK!
+6
0
SIG
MUTE
AUX1
PRE
OO
AUX2
AUX4
OO
PK!
+6
0
SIG
MUTE
+6
OO
AUX4
LR
M
L
+6
OO
PRE
AUX3
OO
AFL
PAN
L
AUX1
PRE
OO
AUX2
OO
20
+15
EQ IN
30
20
+15
80 Hz
- 15
EQ IN
OO
20
1k
- 15
LF
80 Hz
- 15
EQ IN
+1 0
OO
R
AUX1
PRE
OO
PRE
0
OO
=
PAN
L
1k
-15
30
20
2 50
400
OO
20
+15
45
30
20
15 k
1 80
70
400
OO
20
3k +1 5
4k
7 00
HM
+15
45
30
20
63 26
HPF
HF
12 k
3k +1 5
4k
OO
20
10
30
0
MIC
LINE
1 00Hz
HF
12 k
GAIN
HPF
100 Hz
HF
12 k
GAIN
HPF
1 00Hz
HF
12 k
GAIN
HPF
100 Hz
HF
12 k
0
20
10
10
0
MIC
LIN E
1 00Hz
HF
12 k
GAIN
HPF
100 Hz
HF
12 k
0
20
10
10
0
MIC
LINE
HPF
HF
12 k
0
20
10
10
0
MIC
LINE
100 Hz
HF
12 k
GAIN
HPF
100 Hz
HF
12 k
0
20
10
10
0
MIC
LINE
HPF
100 Hz
HF
- 15
6k
5 00Hz
250
3 5Hz
LF
AUX2
AUX6
AFL
M
=
PAN
0
40
-10 -6
0
20
10
10
50
100 Hz
3k +1 5
4k
7 00
HM
+15
8 0Hz
+15
PRE
AUX3
+1 0
AFL
AFL
1k
1 5k
180
EQ IN
L-R
M
1-2
LM
+15
-15
PK !
10
3- 4
-15
70
45
1k
-15
LF
PFL/AFL AC TIVE
0
OO
MUTE
30
0
MIC
LINE
HPF
12 k
- 15
6k
5 00Hz
2 50
80 Hz
ALLEN&HEATH
AUX2
R
63 26
GAIN
PFL
L-R
1- 2
1
+6
OO
SIG
10
0
PLAYBACK
LEVEL
+6
PK !
SIG
L-R
M
R
EVEN
MUTE
PK !
10
L-R
M
R
EVE N
MUTE
SIG
10
L-R
=
BAL
L
ODD
PK !
SIG
10
L-R
+6
OO
BAL
R
EVE N
MUTE
PK !
SIG
10
L-R
L
ODD
HM
+15
AUX6
=
PAN
R
EVEN
MUTE
PK !
SIG
10
L-R
L
ODD
MUTE
PK !
SIG
10
R
EVE N
+6
OO
=
PAN
L
ODD
MUTE
PK !
SIG
L-R
R
EVEN
+6
OO
+6
AFL
L
40
50
-10 -6
0
20
10
10
HF
3k +1 5
4k
7 00
1 5k
180
400
+6
OO
POST
30
0
MIC
LINE
100 Hz
12 k
1k
6k
5 00Hz
70
AUX6
POST
=
PAN
L
ODD
+6
OO
=
PAN
R
EVEN
MUTE
PK !
10
L-R
M
L
ODD
+6
OO
+6
OO
=
+6
AUX6
POST
OO
M
POST
OO
AUX6
POST
=
PAN
R
EVE N
MUTE
SIG
10
0
M
L
ODD
PK !
SIG
L-R
=
PAN
R
EVEN
MUTE
PK !
10
L-R
M
L
ODD
+6
OO
+6
OO
AUX6
POST
+6
OO
=
PAN
R
EVE N
MUTE
SIG
10
0
M
L
ODD
PK !
SIG
L-R
=
PAN
R
EVEN
MUTE
PK !
10
L-R
=
PAN
R
EVEN
MUTE
SIG
10
0
M
L
ODD
PK !
SIG
L-R
=
PAN
R
EVEN
MUTE
PK !
10
L-R
=
PAN
R
EVEN
MUTE
SIG
10
L-R
M
L
ODD
PK !
SIG
10
=
PAN
R
EVEN
MUTE
PK !
SIG
L-R
M
L
ODD
PFL
PK !
SIG
10
=
PAN
R
EVEN
MUTE
PFL
PK !
L-R
=
PAN
R
EVEN
+6
OO
+6
OO
AUX6
POST
1k
HM
POWER
AUX5
POST
63 26
GAIN
HPF
HF
- 15
AUX3
AUX4
40
-10 -6
0
20
10
10
50
100 Hz
12 k
45
MATRIX 2
0
30
0
MIC
LINE
Talk to LRM
AUX
5-6
PLAYBACK
To LR
+10
63 26
GAIN
HPF
HF
3k +1 5
4k
7 00
Talk to AUX 1-4
OO
1
40
-10 -6
0
20
10
10
50
100 Hz
MAX
AUX
1-2
PRE
OO
AUX5
+6
OO
AUX6
POST
+6
OO
+6
OO
AUX6
POST
+6
OO
+6
OO
AUX6
POST
+6
OO
+6
OO
AUX6
POST
+6
OO
+6
OO
AUX6
POST
+6
OO
+6
OO
AUX6
POST
+6
OO
+6
OO
AUX6
POST
+6
OO
+6
OO
AUX6
POST
+6
OO
+6
OO
AUX6
POST
+6
OO
+6
OO
AUX6
POST
+6
+6
OO
AUX6
POST
OO
+6
OO
AUX6
POST
MTX
1-2
LR
pre-fade
M
PAN
AUX6
+6
LEVEL
AUX1
63 26
30
0
MIC
LINE
HPF
HF
MIN
AUX3
OO
+6
POST
PRE
POST
+6
OO
AUX2
AUX4
OO
AUX5
POST
+6
AUX4
+6
+6
OO
AFL
OO
GAIN
All up =LR post
+6
OO
PRE
+6
OO
AUX3
OO
AUX4
OO
AUX5
POST
+6
OO
AUX4
OO
+1 5
AUX1
OO
PRE
AUX3
+6
OO
AUX4
+6
OO
+6
OO
AUX4
+6
OO
+6
OO
AUX4
+6
OO
+6
OO
AUX4
+6
OO
+6
OO
AUX4
+6
OO
+6
OO
AUX4
+6
OO
+6
OO
AUX4
+6
OO
+6
OO
AUX4
+6
OO
+6
OO
AUX4
+6
OO
+6
OO
AUX4
+6
OO
+6
OO
AUX4
+6
OO
+6
OO
AUX4
40
-10 -6
0
20
10
10
50
- 15
R
EQ IN
30
12 k
L
R
OO
AUX4
0
20
10
0
MIC
LINE
TB MIC
TB
LEVEL
4
L
LEVEL
- 15
AUX2
PRE
AUX3
2TRK
USB
PLAYBACK SOURCE
LF
PRE
OO
AUX2
PRE
AUX3
GAIN
USB SEND SOURCE
LM
+15
AUX1
PRE
OO
AUX2
PRE
AUX3
+6
GRP
4
EQ IN
AUX1
PRE
10
+1 5
-15
3
2 50Hz
-15
+15
EQ IN
AUX1
PRE
OO
AUX2
PRE
AUX3
+6
OO
2
GRP
MATRIX
OO
AUX2
OO
GRP
GRP
+15
LF
8 0Hz
-15
+6
3
2k5
LM
1k
-15
+6
2
GRP
12k
HM
2 k5
40 0
35Hz
LF
+15
OO
OO
GRP
ST3 IN
USB
-15
250
EQ IN
1
+15
8 0Hz
+15
EQ IN
AUX1
PRE
-15
LF
80Hz
-15
EQ IN
AUX1
PRE
LF
8 0Hz
-15
EQ IN
AUX1
PRE
LF
80Hz
+15
EQ IN
AUX1
PRE
-15
LF
8 0Hz
-15
EQ IN
AUX1
PRE
LF
80Hz
+15
EQ IN
AUX1
PRE
-15
LF
80Hz
-15
EQ IN
AUX1
PRE
LF
80Hz
-15
EQ IN
AUX1
PRE
LF
80Hz
-15
EQ IN
AUX1
PRE
LF
80Hz
-15
EQ IN
AUX1
PRE
LF
80Hz
-15
EQ IN
AUX1
PRE
LF
80Hz
-15
EQ IN
AUX1
PRE
-15
80Hz
-15
EQ IN
AUX1
LF
80Hz
-15
EQ IN
OO
-15
HF
15k
18 0
45
-15
-15
5
-30
250 Hz
LF
80Hz
0
-20
1 2k
-15
70
40 0
GRP
1
-5
LEV
5
-30
GRP
10
OO
ST4 -10
0
-20
25 0
5
To LR
To CH
-5
LEV
+15
45
0
-30
10
OO
ST2 -10
3 k +15
4k
ST3 INPUT SOURCE
-5
-20
5
HM
-15
70
45
-10
LEV
0
10 0Hz
15k
ST3
-5
HPF
- 15
6k
500 Hz
-10
-20
-30
3 k +15
4k
700
HM
LEV
40
50
1 2k
-15
6k
500 Hz
ST1
10
30
HF
3 k +15
4k
700
HM
0
20
10
0
MIC
LINE
10 0Hz
1 2k
1k
15k
GAIN
HPF
HF
- 15
6k
500 Hz
0
20
10
0
MIC
LINE
10 0Hz
3 k +15
4k
700
HM
GAIN
HPF
1 2k
-15
6k
500 Hz
10
30
HF
3 k +15
4k
700
HM
0
20
10
0
MIC
LINE
10 0Hz
1 2k
1k
15k
GAIN
HPF
HF
-15
6k
500 Hz
0
20
10
0
MIC
LINE
10 0Hz
3 k +15
4k
700
HM
GAIN
HPF
1 2k
-15
6k
500 Hz
10
30
HF
3 k +15
4k
700
HM
0
20
10
0
MIC
LINE
10 0Hz
1 2k
1k
15k
GAIN
HPF
HF
-15
6k
500 Hz
0
20
10
0
MIC
LINE
10 0Hz
3 k +15
4k
700
HM
GAIN
HPF
1 2k
-15
6k
500 Hz
10
30
HF
3 k +15
4k
700
HM
0
20
10
0
MIC
LINE
10 0Hz
1 2k
1k
15k
GAIN
HPF
HF
-15
6k
500 Hz
0
20
10
0
MIC
LINE
10 0Hz
1 2k
3 k +15
4k
1k
15k
GAIN
HPF
HF
-15
6k
500 Hz
0
20
10
0
MIC
LINE
10 0Hz
3 k +15
4k
700
HM
GAIN
HPF
1 2k
-15
6k
500 Hz
10
30
HF
3k +15
4k
700
HM
0
20
10
0
MIC
LINE
10 0Hz
1 2k
1k
15k
GAIN
HPF
HF
-15
6k
500 Hz
0
20
10
0
MIC
LINE
10 0Hz
3 k +15
4k
700
HM
GAIN
HPF
1 2k
-15
6k
500 Hz
10
30
HF
3 k +15
4k
700
HM
0
20
10
0
MIC
LINE
10 0Hz
1 2k
1k
15k
GAIN
HPF
HF
-15
6k
500 Hz
0
20
10
0
MIC
LINE
10 0Hz
3k +15
4k
700
HM
GAIN
HPF
1 2k
-15
6k
500 Hz
40
50
HF
1 2k
3 k +15
4k
700
10
30
10 0Hz
HF
1 2k
HM
0
20
10
0
MIC
LINE
HPF
10 0Hz
HF
-15
GAIN
20
32
ZED-420 = 715mm (28.2 inches)
ZED-428 = 930mm (36.6 inches)
ZED-436 = 1135mm (44.7 inches)
Weight kg (lb)
Model
Unpacked
Packed
ZED-420
14 (31 lb)
17.5 (38.5 lb)
ZED-428
18 (40 lb)
22.5 (56.25 lb)
ZED-436
22 (48.5 lb)
26.5 (58.3 lb)
Allen & Heath
13
ZED-4 BUS User Guide
BLOCK DIAGRAM
LINE IN
+48V
+
-
GAIN
PHANTOM POWER SWITCH
MIC IN
L
R
R
L
+
-
STEREO INPUT 1
ST1
ST2
R
L
STEREO INPUT 3
ST3
GAIN
GAIN
100Hz
LR
CHAN
GAIN
LR
CHAN
HPF
INSERT
SUM
+
LM
SIGNAL
PEAK
HM
4 BAND EQUALISER
MONO CHANNEL
LF
LF
HF
HF
STEREO CHANNEL
HF
L
R
AUX 1-4
+
PLAYBACK
SOURCE
4 BAND EQUALISER
LF
2 TRACK IN
USB RETURN
GAIN
TALKBACK
ST3 INPUT SOURCE
ON
48V PHANTOM POWER
OFF
L-R-M
EQ
IN
FACTORY SOLDER LINK
L-R
+
+
DIRECT OUT
EQ
IN
PEAK
SIGNAL
PLAYBACK
LEVEL
PFL
MUTE
MUTE
PFL
PFL
+
FADER
PRE
FADER
PRE
M
L-R
1-2
3-4
M
L-R
1-2
3-4
MIX BUSES
TIP SEND
L INSERT
TIP SEND
R INSERT
TIP SEND
M INSERT
TIP SEND
M
MAIN LR
+10dB
+10dB
MAIN M
MUTE
MUTE
MUTE
MUTE
PAN
RECORD
OUTPUT
FACTORY FIT
MAIN OUT
LEFT
BALANCED
+4dBu NOMINAL
RIGHT
MONO
AUX1
BALANCED OPTION
+4dBu NOMINAL
IMPEDANCE BALANCED
-2dBu NOMINAL
BALANCED
+4dBu NOMINAL
GROUP1
AUXES 2 TO 6 THE SAME
R
USB I/O
IMPEDANCE BALANCED
-2dBu NOMINAL
MATRIX1
BALANCED OPTION
+4dBu NOMINAL
MATRIX 2 THE SAME
GROUPS 2 TO 4 THE SAME
USB DEVICE
L
PHONES
LEVEL
HEADPHONES
METERS
SERVICE CENTRE OPTION FIT
FACTORY FIT
METER
SERVICE CENTRE OPTION FIT
+10dB
M
L-R
MATRIX1
MASTER LEVEL
AFL
MTX 1-2
AUX 1-2
AUX 5-6
R
L
PFL/AFL
L-R POST
L-R PRE
FACTORY SOLDER LINK
USB
OUTPUT
USB
RETURN
PRIORITY SWITCHING
GROUP1 FADER
AFL
R
FROM AUX 5
FROM AUX 6
FROM AUX 2
FROM MATRIX 2
L
GROUP1 INSERT
AFL
+10dB
AUX1
MASTER LEVEL
MINI BUS
GRP1 GRP2 GRP3 GRP4
ZED-4 BLOCK DIAGRAM
PAN
AUX1
AUX 2
AUX3
AUX 4
AUX5
BAL
+
AUX 6
+
AUX1
AUX 2
AUX3
AUX 4
AUX5
AUX 6
LR / M
PFL ACTIVE
USB
OUTPUT
ZED-4 BUS User Guide
14
Allen & Heath
TALKBACK
MIC IN
2= +
BALANCED
LEFT
RIGHT
MONO
GROUP 1
GROUP 2
GROUP 3
GROUP 4
AUX 1
AUX 2
AUX 3
AUX 4
AUX 5
AUX 6
PFL/AFL
MONO INPUT CHANNEL
DIR OUT
1
1
1
Direct Output Socket
Standard 1/4” (6.25mm) Jack socket. Wired Tip=Hot(+),
Ring=cold (-), Sleeve=Chassis. For recording individual channels,
factory default is prefade signal (post mute).
The nominal level is 0dBu and the output is impedance balanced.
MIC 1
2
Microphone Input Socket
Standard 3-Pin XLR socket wired as Pin 1=Chassis, Pin 2=hot (+),
Pin 3=Cold (-).
2
3
3
48V Phantom Power Switch
Applies +48V to pins 2 and 3 of the XLR input though 6k8 resistors
for phantom powered condenser microphones.
48V
Line Input Jack Socket
LINE IN
1
4
4
Standard 1/4” (6.25mm) Jack socket for balanced or unbalanced line
level signals. Wired Tip=Hot(+), Ring=cold (-), Sleeve=Chassis.
The Line input overrides the Mic input, so if you want to hear something plugged in to the xlr socket, make sure nothing is plugged into
the Line input.
INSERT
1
5
6
Insert Jack Socket
5
GAIN
0
20
10
10
30
0
MIC
LINE
-10 -6
7
Standard 1/4” (6.25mm) Jack socket for unbalanced insert send and
return signals. Wired Tip=send, Ring=return, Sleeve=Chassis.
Nominal level is 0dBu. The insert point is after the 100Hz filter and
before the EQ.
40
6
50
63 26
HPF
Gain Control
This adjusts the gain of the input amplifier to match the signal level
of the input. The gain is varied from –6dB (attenuation) to +63dB
for signals plugged in to the xlr socket (Mic Input) and –10dB to
+26dB for signals plugged into the Line input jack.
100Hz
100Hz Hi-pass Filter
dBr
10.00
7
0.00
-10.00
The Hi-pass filter is used for reducing pop noise and rumble from microphone signals. It is a 2-pole (12dB per octave) filter with a corner frequency set at 100Hz.
The filter affects signals from both Mic XLR and Line jack
socket.
-20.00
-30.00
-40.00
-50.00
10.00 Hz
Allen & Heath
100.00
1000.00
10000.00
30000.00
15
ZED-4 BUS User Guide
MONO INPUT CHANNEL
HF EQ
HF
6
6
12k
The HF (High Frequency) equaliser affects the frequency response
of the higher audible frequencies. The corner frequency of 12kHz is
around 3dB from the maximum cut or boost of the circuit.
dBr
20.00
-15
1k
3k +15
4k
700
15.00
10.00
6k
5.00
0.00
7
HM
500Hz
15k
-5.00
-10.00
-15.00
-20.00
20.00 Hz
-15
70
180
+15
250
45
8
LM
35Hz
7
400
100.00
1000.00
10000.00
30000.00
HMF EQ
The HMF (High Mid Frequency) equaliser affects the upper middle
of the audible frequency range. The frequency graduations on the
sweep control are the centre frequencies of the EQ.
dBr
20.00
1k
15.00
10.00
5.00
0.00
LF
-15
+15
-5.00
-10.00
-15.00
80Hz
-20.00
20.00 Hz
-15
100.00
1000.00
10000.00
30000.00
+15
EQ IN
8
LMF EQ
The LMF (Lower Mid Frequency) equaliser affects the lower middle
of the audible frequency range.
dBr
20.00
15.00
10.00
5.00
0.00
-5.00
-10.00
-15.00
-20.00
20.00 Hz
Allen & Heath
16
100.00
1000.00
10000.00
ZED-4 BUS User Guide
MONO INPUT CHANNEL
9
LF
9
80Hz
LF EQ
The LF (Low Frequency) equaliser affects the response at the low
end of the audio range. The graph shows the response of the LF EQ
at maximum cut and boost. The corner frequency is 80Hz.
dBr
20.00
-15
+15
15.00
10.00
EQ IN
10
5.00
0.00
AUX1
PRE
-5.00
-10.00
11
-15.00
OO
+6
AUX2
-20.00
20.00 Hz
100.00
1000.00
10000.00
PRE
OO
+6
10
AUX3
12
11
OO
+6
OO
+6
AUX4
POST
PRE
AUX5
12
POST
13
OO
The EQ IN switch enables the equaliser when pushed in. The EQ is
bypassed when the switch is in its up position.
Auxes 1 & 2
Each of these controls sends a signal to an auxiliary bus. The signal is
sourced pre-fade which means that the level is independent of, and
unaffected by the fader. Auxes 1 & 2 are primarily used for foldback
monitoring purposes, as the fader does not affect the level. They can
also be used as feeds for recording and are available sources to the
USB interface for this purpose.
These sends are affected by the Mute switch, so muting the channel
will also mute the Aux sends.
The control varies the signal level to the bus from off (fully attenuated) to +6dB, with unity gain at the arrow.
There are master level controls for all of the Aux outputs situated in
the master section of the mixer.
Auxes 3 & 4
These are switched pre or post-fade so they can be used as either
monitor sends or effects sends.
+6
AUX6
Auxes 5 & 6
POST
13
OO
Allen & Heath
EQ IN
Sourced post fade, so that the level is set with the send control but
will be affected by the fader position. Mainly used for effects.
+6
17
ZED-4 BUS User Guide
MONO INPUT CHANNEL
=
PAN
PAN
14
14
L
ODD
15
R
EVEN
The pan control adjusts how the signal from the mono input channel is
shared between the left and right buses and subsequently the main stereo
outputs, similarly to pairs of Groups. Set to the mid position, equal amounts
of signal are fed to left and right, with pan set to L, none is sent to the Right
bus.
MUTE
16
15
Mute Switch
16
PFL Switch
PFL
PK !
17
SIG
10
L-R
17
0
M
18
This mutes or cuts the signal to the buses and the Direct Out. A rectangular
LED illuminates to show the Mute switch is pressed.
The PFL (Pre-Fade Listen) switch sends the channel signal to the PFL bus
and subsequently to the headphones and the main L R meters. Used for
checking the audio signal before raising the fader or un-muting the channel.
Signal & PK! LED
The Signal LED illuminates dimly at a threshold of –16dB nominal level and
gets brighter with higher level signal. The source for the signal & peak LED’s
is just after the EQ IN switch.
The PK! LED illuminates when the signal just after the EQ IN switch is
within 5dB of clipping.
1-2
3-4
18
Routing Switches
The routing switches connect the post-fade signal to the mix buses via the
pan control for the main LR bus and the group buses. For minimum noise
from the mix bus summing amplifier, leave the switches in their up positions
if the channel signal is not required on the bus.
20
19
30
OO
Fader
19
The 100mm fader affects the level of the channel signal to the left & right,
mono and group buses and Auxes 5 & 6. Also Auxes 3 & 4 if switched to
post-fade. There is 10dB of gain at the top and the unity gain position is
marked by “0”.
1
Allen & Heath
18
ZED-4 BUS User Guide
STEREO INPUT CHANNEL
ST1 IN
1
L
1
R
L/M
4
2
ST1 (& ST3) Phono sockets
These are stereo inputs additional to the main stereo channel inputs (below). The gain is varied by the ST1 (& ST3) level control
and these inputs can be sent to either the stereo channels or
straight to the L R main bus, depending on the setting of the underpanel switch. These inputs are unbalanced.
The source for the ST3 input can be switched from the phono
sockets to the USB return signal with the selector switch below the
USB socket.
Stereo Inputs 1 (& 3) Level control
Adjust the level of the stereo inputs 1 & 3 from off (fully attenuated) to maximum where it has 10dB of gain.
ST2 IN
ST1 (& 3) Routing selector switch
R
ST1
LEV
-10
4
-5
0
-20
2
5
-30
3
To LR
To CH
ST2 -10
ST2 (& ST4) input jack sockets
Standard 1/4” jack sockets for line level stereo signals. Can be used
with a mono input where the L/M input will also connect to the R
input if nothing is plugged in to R.
The Stereo 1 inputs accept unbalanced or balanced signals.
Stereo Input ST2 (& ST4) Level control
5
Adjusts the level of the ST2 (& ST4) input. The range is from off to
+10dB.
-5
0
LEV
-20
5
-30
OO
Allen & Heath
This switch selects whether the ST1 (or ST3) signal is sent to the L
R bus directly, or the stereo channel below. When it is pressed in,
the ST1 (or ST3) signal sums together with the main stereo inputs
ST2 (or ST4).
10
OO
5
3
10
19
ZED-4 BUS User Guide
STEREO INPUT CHANNEL
STEREO Channel EQ
6
HF
The EQ on the stereo Channel is 4 band, fixed frequency and comprises a shelving high frequency section, a shelving low frequency
section and two fixed mid frequency controls.
12k
STEREO HF EQ
-15
+15
dBr
20.00
HM
15.00
10.00
5.00
2k5
0.00
-15
+15
LM
-5.00
6
-10.00
-15.00
-20.00
20.00 Hz
250Hz
-15
100.00
+15
10000.00
30000.00
STEREO LF EQ
dBr
20.00
LF
1000.00
15.00
10.00
80Hz
5.00
-15
+15
0.00
-5.00
7
EQ IN
-10.00
-15.00
-20.00
10.00 Hz
The EQ IN switch enables the
equaliser when pushed in. The
EQ is bypassed when the switch
is in its up position.
1000.00
10000.00
STEREO LMF AND HMF EQ
7
EQ IN
100.00
dBr
20.00
15.00
10.00
5.00
0.00
-5.00
-10.00
-15.00
-20.00
10.00 Hz
Allen & Heath
100.00
20
1000.00
10000.00
ZED-4 BUS User Guide
STEREO INPUT CHANNEL
Auxes 1 & 2
AUX1
PRE
8
OO
+6
OO
+6
8
Auxes 1 & 2 send a mono sum of the stereo channel left & right signals
sourced from pre-fader.
9
Auxes 3 & 4
10
Auxes 5 & 6
AUX2
PRE
AUX3
9
OO
+6
OO
+6
Again, a mono sum of the stereo channel left & right signals, the source being switchable pre or post fader.
AUX4
POST
PRE
Auxes 5 & 6 take their source from a mono sum of the stereo channel left &
right signals after the fader.
AUX5
POST
10
Balance control
+6
OO
AUX6
11
The Balance control varies the relative levels between the left and right
channels.
12
Mute Switch
13
PFL Switch
14
Signal & PK! LED
POST
+6
OO
=
BAL
11
L
ODD
R
EVEN
12
MUTE
PFL
13
PK !
14
SIG
10
L-R
15
1-2
The PFL (Pre-Fade Listen) switch sends a mono sum of the stereo channel
channel signal to the PFL bus.
The Signal LED illuminates dimly at a threshold of –16dB on either left or
right channels and gets brighter with higher level signal. The source for the
signal & peak LED’s is just after the EQ IN switch.
The PK! LED illuminates when the signal just after the EQ IN switch is
within 5dB of clipping.
0
M
Mutes the signals to the main L R, M and Group buses as well as the Aux
sends.
15
Routing Switches
16
Fader
3-4
The routing switches connect the post-fade signal to the mix buses via the
balance control for L_R and the groups. For minimum noise from the mix
bus summing amplifier, leave the switches in their up positions if the channel
signal is not required on the bus.
20
16
30
The 100mm fader affects the level of the channel signal to the left & right,
mono and group buses and Auxes 5 & 6. Also Auxes 3 & 4 if switched to
post-fade. There is 10dB of gain at the top and the unity gain position is
marked by “0”.
OO
17-18
Allen & Heath
21
ZED-4 BUS User Guide
MATRIX OUTPUTS & AUX MASTERS
GRP
GRP
1
1
+6
OO
GRP
GRP
2
2
+6
OO
GRP
GRP
3
3
+6
OO
GRP
GRP
4
4
+6
OO
L
Matrix Outputs
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
There are two matrix sub-mix sections in ZED-4. The send controls
(black & red knobs) take the post-fade signals from the Group, Left,
Right and Mono mix paths and send them to the Matrix output. Matrix
outputs 1 & 2 are individual mono outputs. There is a master level control to adjust the overall output level, and an AFL (after fade listen)
switch to check the Matrix mix.
Uses for Matrix outputs include:
•
Record feeds. Enabling a different mix from the main PA mix to
be recorded, where more of the backline sound can be dialled in
to the record mix if it is low in the main PA mix.
•
Zone feeds. For creating individual outputs for different areas to
the main PA arena.
•
Delay stack feeds. Enabling individual mix and level control of
delayed speakers in large auditoriums.
•
Broadcast feeds for live events that are “on air” or “on line!”
L
+6
OO
R
R
The Matrix and the Auxiliary outputs are impedance balanced as standard from the factory. There is the option to fit balanced drivers at a
service centre convert the outputs to be fully electronically balanced.
+6
OO
M
OO
+6
OO
+6
M
+6
OO
LEVEL
LEVEL
+6
OO
AFL
MATRIX
OO
MATRIX
0
+10
AFL
Allen & Heath
AFL
1
AUX1
+6
OO
The Aux master level controls adjust the overall level of each of the
Aux mixes 1 to 6. The range of control is from off (fully attenuated) to
+10dB.
There is an AFL (after fade listen) switch on each Aux mix to check the
signal after the master level control.
2
AUX2
OO
Auxiliary Output Master Level controls
0
+10
AFL
AUX3
OO
0
AUX4
+10
OO
AFL
0
+10
AFL
22
AUX5
OO
0
+10
AFL
AUX6
OO
0
+10
AFL
ZED-4 BUS User Guide
GROUP MASTERS
6
L-R
L-R
L-R
L-R
M
M
M
M
=
=
PAN
=
PAN
1
Group Fader
2
Group AFL
=
PAN
The Group fader is fed with the Group mix signal via
the Group Insert point. The fader has 100mm of
travel and there is +10dB of gain at its maximum
position.
PAN
5
L
R
4
3
L
L
R
L
R
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
1
2
3
4
MUTE
2
R
AFL
MUTE
AFL
MUTE
AFL
MUTE
3
AFL
10
10
10
10
5
5
5
5
0
0
0
0
5
5
5
5
10
10
10
10
4
The AFL switch allows monitoring of the Group
signal after the fader but before the Mute switch.
Group Mute
The illuminated Mute switch cuts the Group signal
from the Group output, sub routing and the Group
meter.
The Group signal to the Matrix outputs is also cut
with the Mute switch.
Group Meter
A 4 LED bar meter to show the level of signal on
the Group output.
The thresholds are:
Sig = -18dB nominal, 0dB, +6dB, Pk=+16dB.
0dB on the meter = +4dBu at the balanced output.
Group Pan
1
20
20
20
20
30
30
30
30
OO
OO
OO
OO
GRP 1
Allen & Heath
GRP 2
GRP 3
5
6
GRP 4
23
The Pan controls how the Group signal is shared
between the Left & Right main mix buses when subrouted. The Group output is unaffected by the Pan
control.
Group Sub Routing
The L-R switch routes the panned Group signal to
the main LR mix and the M switch routes the unpanned Group signal to the mono bus.
If you want to set up a stereo pair of sub-groups and
route them to the main LR mix, make sure the odd
numbered Group is panned Left and the Even Group
is panned Right.
ZED-4 BUS User Guide
L R & M MASTERS and HEADPHONES
Main Mix Fader
PHONES
LEVEL
1
4
MIN
MAX
The L, R & M faders follow the mix insert points. The
faders have 100mm of travel and 10dB of gain at the
top.
LR
M
Main Mix Mute
3
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
L
R
M
MUTE
2
MUTE
2
Cuts the signal from the main mix output. Illuminates
red when cut. Also cuts the signal from the associated
Matrix feed and the headphones monitor.
MUTE
Main Mix Meter
3
10
10
10
5
5
5
0
0
0
5
5
5
10
10
10
20
20
20
A 4 LED bar meter to show the level of signal on the
associated output.
The thresholds are:
Sig = -18dB nominal, 0dB, +6dB, Pk=+16dB.
0dB on the meter = +4dBu at the balanced output.
Headphones Source & Level
4
The LR/M switch selects the signal source for the headphones, out for Left & Right, in for Mono. If any AFL or
PFL switch is pressed then this will override the source
selection.
The level control adjusts the volume of the headphone
signal.
!
30
30
30
OO
OO
OO
1
L
Allen & Heath
R
M
24
Warning !
To avoid
damage to your hearing do
not operate the
headphones or sound
system at excessively high
volume.
Continued
exposure to high volume
sound can cause frequency
selective or wide range
hearing loss.
ZED-4 BUS User Guide
MAIN METERS & TALKBACK
Main Meters
PHONES
1
3
TB MIC
The main Left & Right meters will show the signal level
at the main LR mix outputs or the main M mix output
depending on the selector switch below the Phones
Level control. If any PFL or AFL switch is pressed the
meters will show that signal level. Basically, the meters
show the headphones monitor signal pre the headphones level control.
The PFL/AFL active LED illuminates if any PFL or AFL
switch is pressed.
Note that PFL and AFL monitoring will be in mono.
TB
LEVEL
MIN
MAX
2
Talk to AUX 1-4
Talkback
2
Talk to LRM
A microphone xlr connector is provided with phantom
power applied as a factory default.
The TB Level control varies the gain of the talkback
amplifier from 20dB (MIN) to 55dB (MAX).
The two switches send the talkback signal to Auxes 1
to 4 and to the main L, R & M mixes. When not using
talkback, it is best to leave these switches in their out
position.
POWER
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
L
R
Headphone Jack Sockets
3
Standard 1/4 inch and 3.5mm TRS jack sockets for stereo headphones. Tip = Left.
1
PFL/AFL ACTIVE
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ZED-4 BUS User Guide
USB SECTION & PLAYBACK
4
USB
RETURN
1
SEND
ST3 INPUT SOURCE
2
ST3 IN
USB
3
2TRK
USB
PLAYBACK SOURCE
2
USB Send Source Selection
The USB source selection switches determine which signals are
sent out on the USB interface. If all the switches are up the
main LR mix post-fade signal is sent. Other sources available are
the pre-fade main LR mix, Auxes 5&6, Auxes 1&2 and Matrix
1&2.
The switches work on a priority system with the upper switch
taking priority—so if all the switches are pressed in for example, the Matrix 1&2 would be selected as the source.
ST3 Input Source Selector
This switch determines the signal source for the ST3 input. In
the out position the source is the ST3 phono connectors, the in
position is the stereo USB return.
USB SEND SOURCE
MTX
1-2
2
AUX
1-2
1
AUX
5-6
LR
pre-fade
4
All up =LR post
5
Playback Input Source Selector
This switch determines the signal source for the Playback input.
In the out position the source is the 2TRK IN phono connectors, the in position is the stereo USB return.
USB Connector
Standard B type USB connector.
Playback Input Level
Controls the level of the playback signal from off (fully attenuated) to +6dB.
PLAYBACK
LEVEL
5
6
OO
6
7
Allen & Heath
+6
Playback To LR
Routes the Playback signal (2 TRK IN or USB return) to the
main LR mix.
PLAYBACK
To LR
PFL
7
Playback PFL
Allows monitoring of the Playback signal (pre-Level) in headphones and on the main LR meters. Note the monitoring will
be in mono.
26
ZED-4 BUS User Guide
USB CONNECTION
AUX OUT
AUX
1
AUX
2
AUX
3
AUX
4
AUX
5
AUX
6
MAIN OUT
L
GROUP OUT
GRP
1
GRP
2
GRP
3
GRP
INSERT
L
INSERT
R
INSERT
M
2TRK IN
4
L
1
INSERT
2
INSERT
INSERT
3
INSERT
R
R
4
M
2TRK OUT
L
MTX
1
MTX 2
USB
MATRIX
OUT
RETURN
SEND
R
PHONES
ST3 INPUT SOURCE
GRP
GRP
1
1
+6
OO
GRP
2
2
+6
GRP
2TRK
USB
+6
OO
GRP
OO
ST3 IN
USB
PLAYBACK SOURCE
OO
+6
OO
+6
TB MIC
TB
LEVEL
GRP
3
3
USB SEND SOURCE
+6
OO
GRP
GRP
4
4
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
OO
+6
LR
pre-fade
R
M
+6
OO
POWER
All up =LR post
PLAYBACK
LEVEL
M
LEVEL
Talk to LRM
AUX
5-6
L
R
+6
OO
LEVEL
PLAYBACK
To LR
+6
OO
MATRIX
0
OO
+10
AFL
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
L
R
PFL/AFL ACTIVE
2
ALLEN&HEATH
AUX2
0
OO
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
PFL
AFL
1
AUX1
+6
OO
AFL
MATRIX
MAX
Talk to AUX 1-4
AUX
1-2
OO
L
MIN
MTX
1-2
+10
AUX3
0
OO
+10
AUX4
0
OO
+10
AFL
AFL
AFL
L-R
L-R
L-R
L-R
M
M
M
M
AUX5
OO
0
AUX6
+10
OO
AFL
0
+10
AFL
PHONES
LEVEL
USB Audio Interface
The ZED is equipped with a stereo bi-directional USB 1.1 compliant audio CODEC. It is fully compliant with USB 2 ports
and uses standard Windows and MAC Core Audio Drivers. In other words, plug it in and your computer will find it and
be able to transfer audio to and from the ZED USB device.
You will need some form of audio software running on your computer to be able to record and play back what you record, but on a basic level, you can use your computers media player to play straight to the ZED device.
Just a couple of points to look out for:
1.
When you plug in your ZED USB interface to your computer, check the device volume in:
Control Panel\Sounds & Audio Devices\Volume
If the volume is not fully up
like this…...
Then drag it fully up
like this…...
Then click Apply
2.
If you want to reduce latency (delay) there are some different drivers available for your operating system. Please
check the Allen & Heath website www.allen-heath.com for details and links to third party companies able to supply appropriate drivers for your operating system.
Allen & Heath
27
ZED-4 BUS User Guide
cakewalk
SONAR LE
DIGITAL AUDIO WORKSTATION
SONAR LE Overview.
SONAR LE is a software application from Cakewalk and is included free of charge with your new ZED mixing console.
SONAR LE is a powerful first step into the world of sequencing and hard disk recording on the Windows platform.
You’ll be able to record from your ZED mixer, create tracks and arrange songs, then play back to your ZED mixer via
the USB port. You can decide whether the SONAR family of products is right for you. If you choose to upgrade your
copy of SONAR LE to a more full-featured version, like SONAR Producer or Home Studio Editions, you’ll now be able
to do so at significant savings.
We will describe the basic steps of installing the software and getting started here, for more comprehensive help or
technical support please use the Help files in SONAR LE or visit the SONAR LE website:
http://www.cakewalk.com/owners/sonarle/
The website will have details on registering your product and upgrading it should you wish. There are also tutorials to
get you started.
SONAR LE is the most complete OEM production software solution available today. Unlike other OEM applications,
SONAR LE has been designed to provide a simple yet complete solution for creating music. You won’t feel the need to
upgrade just to get started.
With support for up to 64 tracks and 24 track effects, 8 physical in/outs at 24bit/192kHz, SONAR LE is able to offer a
powerful pc based recording studio. The package also includes 2 instruments, 6 MIDI effects, and 14 audio effects.
SONAR LE has been updated with new features from its acclaimed SONAR Producer, making SONAR LE the first native Windows DAW for Windows XP, Windows x64, and Windows Vista.
Today’s Cakewalk SONAR LE is the definitive choice for creating the most complete hardware and software solution.
SONAR LE Key Features.
64 audio tracks
256 MIDI tracks
8 simultaneous inputs and outputs
24-bit/192 kHz audio quality
24 simultaneous effects
8 simultaneous virtual instruments
Integrated VST/VSTi support, without need for VST adapter
Support for ACID™-format loops
Support for ReWire clients such as Project5, Live, or Reason
Elegant user interface—NEW
Active Controller Technology™ automatically maps MIDI keyboards and control surfaces to the parameters
you need most on effects, instruments, volume, pan, and other mix elements—NEW
Easier integration of virtual instruments with Synth Rack—NEW
Support for Windows Vista (32-bit & 64-bit) —NEW , Windows XP Professional x64 Edition—NEW, and
Windows XP operating systems
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ZED-4 BUS User Guide
System Requirements.
System Requirements
Minimum
Recommended
Windows XP
Windows XP/Vista/Vista x64
Intel® Pentium® 4 1.3 GHz,
or AMD™ Athlon XP 1500+
or higher
Intel® Pentium® 4 2.8 GHz
[EM64T], or AMD™ Athlon 64
2800+or higher
256 MB
1 GB or higher
Graphics (resolution,
color depth)
1024 x 768, 16-bit color
1280 x 960, 32-bit color
Hard Disk Space
100 MB for core program
2 GB for program and content
Hard Disk Type
Any
EIDE/Ultra DMA (7200 RPM) or
SATA
MIDI Interface
Windows-compatible
Windows-compatible
Audio Interface
Windows-compatible
WDM- or ASIO-compatible, including WaveRT for Vista
Operating System
Processor Speed
RAM
Optical Drive
DVD-ROM, DVD+/-R, or DVD+/-RW for installation, CD-R or CDRW capability required for CD audio disc burning
SONAR LE Installation.
Put disk into CD or DVD ROM drive and follow instructions on screen!
SONAR LE Audio Configuration with ZED.
To configure your SONAR LE software to communicate audio to and from your ZED mixing console, follow the sequence below.
Ensure the ZED mixing console is powered on.
Connect the USB lead from the computer to the USB port on ZED.
First check that your computer has recognised
the connection of the ZED USB device by clicking
Settings/Control Panel/Sounds and Audio Devices.
The device name should be USB Audio CODEC
(ensure there are no other external audio devices
attached to the computer).
Also ensure the Device Volume is set to High.
This can default to the middle during connection
which means very low volume from the USB device, so
it’s worth checking the first few times you connect.
The properties window should look like this:
It is also a good idea to select “No Sounds” in the
Sounds window.
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ZED-4 BUS User Guide
Next, fire up SONAR LE.
Click Options/Audio and click on the Drivers tab.
The Input drivers are the audio sources to the
computer, here we have enabled the USB Audio Device
which is the ZED mixing console USB device, and
disabled the audio from the soundcard in the pc.
So the computer is set up to receive audio from
ZED.
The Output Drivers are the audio outputs from the
computer. Here you can see that the pc soundcard
has 4 stereo outputs (all disabled) and the software
has located the USB Audio Device which is ZED.
Tick to enable it.
You will now be able to select your ZED USB left &
right outputs as inputs to SONAR LE and be able to
send audio to your ZED from SONAR outputs.
In order to show how to select inputs to SONAR
tracks, here is a basic Cakewalk project (.cwp).
This is created by clicking File/New/Normal and
then inserting a second audio track by clicking
Insert/Audio Track from the main toolbar.
Click on the I/O tab near the bottom of the window,
then click the expand buttons in the audio track
panes. The tracks 1 & 2 have been re-named ZED
Left and ZED Right by double clicking the name field.
Click the I and the O fields to select inputs and outputs for the track. Here we have selected the USB
Left signal to go to Track 1 (ZED Left) and the USB
Right signal to go to track 2 (ZED Right), panned
them accordingly and selected the track outputs to
be the Master Bus.
If audio is present, click the Input Echo buttons (lit
up yellow here) to monitor the signals on the Master Bus.
The output for the Master Bus is displayed in the
field marked “O” in the Master Bus pane below the
input tracks. You can see here it says USB Audio
Device, which is the ZED USB input.
SONAR will configure this automatically if there is
only one output device enabled in the Output Drivers Options window (above).
You should now be able to send audio to and from your ZED mixing console using SONAR LE.
To test this, let’s do a recording….
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ZED-4 BUS User Guide
To record the audio on tracks 1 & 2, click the
R buttons so they light up red, then the record
button (circle) on the transport controls on
the top icon toolbar. (Or select larger transport controls from Views).
The audio wave profile will show in the track
panes.
Click stop (Square) when finished.
To listen to the recording, click rewind, then
de-select the input echo buttons (to the right
of the R buttons. Also disarm the tracks by deselecting the R buttons.
Click Play (or spacebar) and the recorded audio should play to the USB port on your ZED
mixing console where you can select USB return to Playback or to the ST3 input.
You can use SONAR LE and your ZED mixer together in many ways, for example straightforward recording of a stereo
mix, recording tracks individually to build up a song, or sending a postfade mix from ZED and inserting an effects plug-in
from SONAR LE, returning the post-effects signal to the mix in ZED.
It is a very versatile combination and we hope you find it a creative and enjoyable product partnership.
Allen & Heath
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ZED-4 BUS User Guide
USING USB FOR EFFECTS
5
USB
RETURN
SEND
4
6
ST3 INPUT SOURCE
ST3 IN
USB
2TRK
USB
7
9
PLAYBACK SOURCE
8
USB SEND SOURCE
3
MTX
1-2
AUX
1-2
AUX
5-6
2
LR
pre-fade
All up =LR post
PLAYBACK
LEVEL
OO
+6
PLAYBACK
To LR
PFL
1
Use post fade Aux 5 & 6 as the sends from ZED so when you move the channel
fader the effects level stays in proportion.
2
Select Aux 5-6 on the USB output selector switches.
3
USB lead carries the digital signals to & from the computer.
4
Select USB Device Left for Aux 3 or Right for Aux 4 as the input for the track in
the software package.
5
You can use a send bus in software as you would a hardware mixer.
6
Assign an effect from your software plug-in list.
ALLEN&HEATH
7
If using reverb, it’s a good idea to have 100% wet mix level and reduce the predelay in order to compensate for any latency in USB.
OO
+6
POST
PRE
1
AUX5
POST
OO
+6
OO
+6
8
Send the output of the software group or bus to USB Device. In this case, and
probably with most reverbs, it will be stereo so it will go to left & right.
9
Set the USB return to be sent to ST3. It can then be sent directly to LR or to the
stereo channel by pressing in the under-panel switch below the ST3 Level control.
AUX6
POST
Allen & Heath
32
ZED-4 BUS User Guide
WIRING NOTES
PROCESSOR
Insert cable wiring
RETURN
S
INSERT
T
OUT
T
R
S
R
SEND
GROUND
RETURN
SEND
S
T
R
IN
LINK RING TO SLEEVE TO UNBALANCE
Y-Adapter
Y-Adapter
RCA phono jacks
2 Outputs to 1 Input
adapter
1 Output to 2 Inputs
RCA PHONO CABLE
UNBALANCED
No !
UNBALANCED
INSTRUMENT CABLE
UNBALANCED
BALANCED
TRS JACK CABLE
BALANCED
Sleeve=ground
Sleeve=ground
Ring=cold (-)
Ring=cold (-)
Tip=hot (+)
TO
INPUT
Tip=hot (+)
2=hot (+) 1=ground
BALANCED
MIC CABLE
1=ground
BALANCED
XLR FEMALE
XLR MALE
BALANCED
TRS to XLR-F CABLE
Sleeve=ground
2=hot (+)
FROM
OUTPUT
3=cold (-)
3=cold (-)
General
Wiring
Information
Yes
1=ground
BALANCED
XLR FEMALE
2=hot (+)
3=cold (-)
Ring=cold (-)
Tip=hot (+)
2=hot (+) 1=ground
BALANCED
TRS to XLR-M CABLE
BALANCED
Sleeve=ground
XLR MALE
3=cold (-)
Ring=cold (-)
Tip=hot (+)
Allen & Heath
33
ZED-4 BUS User Guide
PRODUCT SUPPORT
Investigate ALLEN & HEATH’s other ranges at www.allen-heath.com
Large Live Sound mixers — iLive digital, ML and GL Series
Small Format Live Sound mixers — ZED, MixWizards and PA Series
DJ products — Xone Series
Sound Management Series — iDR Series
Registering your product
Thank you for buying the Allen & Heath ZED-4 mixer. We hope that you are happy with it and that you enjoy many years of
faithful service with it.
Please go to www.allen-heath.com/register.asp and register your product’s serial number and your details. By registering with
us and becoming an official Registered User, you will ensure that any warranty claim you might make is actioned quickly and
with the minimum delay.
Alternatively, you may either copy or cut off this section of the page, fill in the details, and return it by mail to:
Allen & Heath Ltd, Kernick Industrial Estate, Penryn, Cornwall TR10 9LU, UK
Allen & Heath
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ZED-4 BUS User Guide