Download Alto EQU MK II Series Owner`s manual

R
LTO
OWNER'S MANUAL
PBM8.250/8.500 MKII
POWERED BOX MIXER
www.altoproaudio.com
Version 2.0 NOV. 2007
English
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
TO REDUCE THE RISK OF ELECTRIC SHOCK
PLEASE DO NOT REMOVE THE COVER OR
THE BACK PANEL OF THIS EQUIPMENT.
THERE ARE NO PARTS NEEDED BY USER
INSIDE THE EQUIPMENT. FOR SERVICE,
PLEASE CONTACT QUALIFIED SERVICE
CENTERS.
WARNING
To reduce the risk of electric shock
and fire, do not expose this equipment
to moisture or rain.
Dispose of this product should
not be placed in municipal waste
and should be separate collection.
11. Move this Equipment only with a cart,
stand, tripod, or bracket,
This symbol, wherever used, alerts you to the
specified by the
presence of un-insulated and dangerous voltages
manufacturer, or
within the product enclosure. These are voltages that
sold with the
may be sufficient to constitute the risk of electric
Equipment. When
shock or death.
a cart is used, use
This symbol, wherever used, alerts you to
caution when
important operating and maintenance instructions.
moving the cart /
Please read.
equipment
Protective Ground Terminal
combination to
AC mains (Alternating Current)
avoid possible
Hazardous Live Terminal
injury from tip-over.
ON: Denotes the product is turned on.
12. Permanent hearing loss may be caused by
OFF: Denotes the product is turned off.
exposure to \ extremely high noise levels.
CAUTION
The US. Government's Occupational Safety
Describes precautions that should be observed to
and Health Administration (OSHA) has
prevent damage to the product.
specified the permissible exposure to noise
1. Read this Manual carefully before operation.
level.
2. Keep this Manual in a safe place.
These are shown in the following chart:
3. Be aware of all warnings reported
with this symbol.
HOURS X DAY SPL EXAMPLE
4. Keep this Equipment away from water and
90 Small gig
8
moisture.
92 train
6
5. Clean it only with dry cloth. Do not use
95 Subway train
4
solvent or other chemicals.
97 High level desktop monitors
3
6. Do not damp or cover any cooling opening.
100 Classic music concert
2
Install the equipment only in accordance with
the Manufacturer's instructions.
102
1,5
105
1
7. Power Cords are designed for your safety. Do
110
0,5
not remove Ground connections! If the plug
does not fit your AC outlet, seek advice from
0,25 or less 115 Rock concert
a qualified electrician. Protect the power
According to OSHA, an exposure to high SPL in
cord and plug from any physical stress to
excess of these limits may result in the loss of
avoid risk of electric shock. Do not place
heat. To avoid the potential damage of heat, it is
heavy objects on the power cord. This could
cause electric shock or fire.
recommended that Personnel exposed to
equipment capable of generating high SPL use
8. Unplug this equipment when unused for long
hearing protection while such equipment is
periods of time or during a storm.
under operation.
9. Refer all service to qualified service personnel
The apparatus shall be connected to a mains
only. Do not perform any servicing other than
those instructions contained within the
socket outlet with a protective earthing
User's Manual.
connection.
10. To prevent fire and damage to the product,
use only the recommended fuse type as
indicated in this manual. Do not short-circuit
the fuse holder. Before replacing the fuse,
make sure that the product is OFF and
disconnected from the AC outlet.
The mains plug or an appliance coupler is used
as the disconnect device, the disconnect device
shall remain readily operable.
IN THIS MANUAL:
1.
2.
3.
4.
5.
6.
7.
8.
9.
INTRODUCTION................................................................................1
FEATURES.......................................................................................1
QUICK START..................................................................................4
CONTROL ELEMENTS......................................................................5
INSTALLATION & CONNECTION......................................................12
PRESET LIST.................................................................................16
BLOCK DIAGRAM..........................................................................17
TECHNICAL SPECIFICATIONS...........................................................18
WARRANTY..................................................................................20
1. INTRODUCTION
Thank you for purchasing the LTO PBM8 8 channel powered mixer with 24-bit
digital multi-effect built-in. It is just one of the many LTO products that a talented,
multinational Team of Audio Engineers and Musicians have developed with their great
passion for music. Your PBM8 is a remarkable compact powered mixer that doesn't
find many equals in the market today. With 6 microphone and 2 stereo MIC/Line-level
inputs for serious live performances, your PBM8 also includes a 24 Bit digital
multi-effect with 16 Factory Presets and 16 variations for every preset, for a total
of 256 different digital effects. There is a three bands EQ on all input channels and
separate Master EQ for Main Mix and Monitor Outputs. Use it for small Gigs, for
Church applications and for Conference.
Enjoy your PBM8 and make sure to read this Manual carefully before operation!
2. FEATURES
6 MIC/Line input channels with gold plated XLR and balanced Line inputs
2 Stereo input channels with balanced TRS jacks
Ultra-low noise discrete MIC preamps with +48V phantom power
Extremely high headroom offering more dynamic range
Each input channel with -20 dB PAD, PAN and level control
3-band equalizer on input channels
2 AUX sends for built-in or external effects, on-stage monitor mix, or
headphone mixing
Built-in feedback terminator
9-band graphic EQ for MAIN/MONITOR
256 position multi-effect
2-track recording IN/OUT (PHONO)
Headphone output
Stereo Line-level output
2 250 watt RMS amplifiers (For PBM8.250 MKII)
2 500 watt RMS amplifiers (For PBM8.500 MKII)
Output connector: 6.3 jack + 4 way-speakon
1
IG
HT
DSP
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
1
16
0dB
0dB
0dB
HIGH
0dB
HIGH
0dB
HIGH
0dB
HIGH
0dB
HIGH
2
3
4
5
13
0dB
HIGH
HIGH
HIGH
6
12
10
12KHz
+15dB
12KHz
+15dB
-15dB
0dB
12KHz
+15dB
-15dB
0dB
12KHz
+15dB
-15dB
0dB
MID
12KHz
+15dB
-15dB
0dB
MID
12KHz
+15dB
-15dB
0dB
MID
12KHz
+15dB
-15dB
0dB
MID
12KHz
0dB
MID
MID
CLIP
DSP
MUTE
+15dB
-15dB
0dB
MID
8
9
MUTE
MID
VARIATIONS
1
16
2.5KHz
-15dB
+15dB
0dB
2.5KHz
-15dB
+15dB
0dB
2.5KHz
-15dB
+15dB
0dB
LOW
2.5KHz
-15dB
+15dB
0dB
LOW
2.5KHz
-15dB
+15dB
0dB
LOW
2.5KHz
-15dB
+15dB
0dB
LOW
2.5KHz
-15dB
+15dB
0dB
LOW
+15dB
LOW
LOW
4
5
6
12
7
11
10
0
dB
0
dB
0
dB
PAN
0
dB
0
dB
15
15
PAN
Left
Right
0
dB
50
DSP
8
8
+10dB
8
-
PAN
Left
Right
DSP/FX
AUX2
POST
+10dB
8
-
MONITOR
0
dB
100
250
500
1K
2K5
5K
8K
16K
FEEDBACK
TERMINATOR
+10dB
1. VOCAL 1
2. VOCAL 2
3. LARGE HALL
4. SMALL HALL
5. LARGE ROOM
6. SMALL ROOM
7. PLATE
8. TAPE REVERB
9. SPRING REVERB
10. MONO DELAY
11. STEREO DELAY
12. FLANGER
13. CHORUS
14. REVERB + DELAY
15. REVERB + FLANGER
16. REVERB + CHORUS
10
15
15
9
9
0
0
0
10
9
9
0
dB
0
dB
15
15
MAIN
0
dB
LINE IN
(bal.)
-
50
100
250
R
LOW NOISE P
RE
A
LOW NOISE P
RE
A
(MONO)
(MONO)
L
L
RE
A
2
P
1
5K
8K
16K
FEEDBACK
TERMINATOR
STEREO
RTN
M
2
P
1
LOW NOISE P
RE
A
M
2
P
1
LOW NOISE P
RE
A
M
2
P
1
LOW NOISE P
M
P
2
RE
A
M
P
1
LOW NOISE P
RE
A
M
P
P
2
LOW NOISE P
RE
A
M
M
1
2K5
FOOT
SW.
PHANTOM
48V
TAPE TO
CH9-10
OFF
1
2
AMPLIFIER
MODE
ON
MAIN
TAPE
2
1K
+10dB
LEVEL
CH 9-10
R
AUX2
OUT
LOW NOISE P
500
+10dB
8
-
+10dB
8
LEVEL
CH 7-8
CH 6
LINE IN
(bal.)
-
+10dB
8
LEVEL
CH 5
LINE IN
(bal.)
-
+10dB
8
LEVEL
CH 4
LINE IN
(bal.)
-
+10dB
8
LEVEL
CH 3
LINE IN
(bal.)
-
+10dB
8
LEVEL
CH 2
LINE IN
(bal.)
-
+10dB
8
8
8
-
+10dB
LEVEL
CH 1
LEVEL
30
Right
TO MAIN
-
+10dB
LEVEL
+10dB
PRESETS:
DSP
-
LEVEL
30
TO MON
-
+10dB
0dB
AUX2
POST
+10dB
Left
Right
8
8
8
8
8
8
0
dB
Left
Right
-
PAN
10
AUX1
PRE
-
DSP/FX
AUX2
POST
+10dB
PAN
Left
Right
-
+10dB
PAN
Left
Right
-
+10dB
PAN
Left
Right
8
8
8
PAN
Left
-
+10dB
8
-
+10dB
8
-
0
0
9
MON
+10dB
0dB
DSP/FX
AUX2
POST
+15dB
AUX1
PRE
-
+10dB
0dB
DSP/FX
AUX2
POST
10
9
0
9
0dB
MON
AUX1
PRE
-
+10dB
0dB
DSP/FX
AUX2
POST
8
9
80Hz
-15dB
+15dB
0dB
MON
AUX1
PRE
-
+10dB
0dB
DSP/FX
AUX2
POST
80Hz
-15dB
+15dB
0dB
MON
AUX1
PRE
-
+10dB
0dB
DSP/FX
AUX2
POST
80Hz
-15dB
+15dB
0dB
MON
AUX1
PRE
-
+10dB
0dB
DSP/FX
80Hz
-15dB
+15dB
0dB
MON
AUX1
PRE
-
+10dB
0dB
80Hz
-15dB
+15dB
0dB
MON
AUX1
PRE
-
80Hz
-15dB
+15dB
0dB
MON
8
80Hz
-15dB
+15dB
0dB
8
80Hz
-15dB
15
9
3
14
13
0dB
LOW
15
2
15
2.5KHz
-15dB
OPERATING
7
11
-15dB
PBM8.250
R
LTO
PRESETS
15
14
8
OT
L
8
SP
MONITOR OUT
MAIN
MAIN BRIDGE
+
+
MAIN MONITOR
HEADPHONE
OUT
MAIN OUT
LEFT
1
3
3
3
3
3
3
3
3
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
RIGHT
LEFT
IN
RIGHT
OUT
PMB8.250 MKII
DSP
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
0dB
0dB
0dB
0dB
0dB
0dB
0dB
R
LTO
PRESETS
16
1
2
15
3
11
7
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
5
6
12
10
12KHz
+15dB
-15dB
12KHz
+15dB
-15dB
0dB
12KHz
+15dB
-15dB
0dB
12KHz
+15dB
-15dB
0dB
MID
12KHz
+15dB
-15dB
0dB
MID
12KHz
+15dB
-15dB
0dB
MID
12KHz
2.5KHz
-15dB
+15dB
+15dB
-15dB
0dB
MID
2.5KHz
-15dB
+15dB
0dB
0dB
MID
LOW
2.5KHz
-15dB
+15dB
0dB
MID
LOW
2.5KHz
-15dB
+15dB
0dB
LOW
0dB
LOW
2.5KHz
-15dB
+15dB
0dB
LOW
+15dB
MUTE
VARIATIONS
LOW
LOW
11
7
4
5
6
12
-15dB
+15dB
0dB
-15dB
+15dB
0dB
MON
MON
MON
MON
AUX1
PRE
AUX1
PRE
AUX1
PRE
AUX1
PRE
AUX1
PRE
0
dB
Left
Right
0
dB
0
dB
8
8
+10dB
8
-
PAN
Left
Right
AUX2
POST
+10dB
PAN
Left
Right
8
8
8
0
dB
-
0
dB
9
15
15
PAN
Left
Right
0
dB
50
100
250
500
1K
2K5
5K
8K
MONITOR
0
dB
FEEDBACK
TERMINATOR
+10dB
1. VOCAL 1
2. VOCAL 2
3. LARGE HALL
4. SMALL HALL
5. LARGE ROOM
6. SMALL ROOM
7. PLATE
8. TAPE REVERB
9. SPRING REVERB
10. MONO DELAY
11. STEREO DELAY
12. FLANGER
13. CHORUS
14. REVERB + DELAY
15. REVERB + FLANGER
16. REVERB + CHORUS
15
15
9
10
9
0
0
0
10
9
9
15
15
0
dB
0
dB
-
50
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
CH 2
CH 3
CH 4
CH 5
CH 6
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
8
-
+10dB
8
-
+10dB
8
-
+10dB
8
-
+10dB
8
-
+10dB
8
-
+10dB
8
8
-
+10dB
8
-
+10dB
CH 1
100
CH 9-10
R
(MONO)
(MONO)
L
L
2
1
P
1
RE
A
M
2
P
1
LOW NOISE P
RE
A
M
2
P
1
LOW NOISE P
RE
A
M
2
P
1
LOW NOISE P
RE
A
M
2
P
1
LOW NOISE P
RE
A
M
2
P
P
P
1
LOW NOISE P
RE
A
M
M
M
2
LOW NOISE P
RE
A
2K5
5K
8K
+10dB
16K
FEEDBACK
TERMINATOR
FOOT
SW.
PHANTOM
48V
TAPE TO
CH9-10
OFF
MAIN
2
STEREO
RTN
MONITOR OUT
1
3
3
3
3
3
3
3
3
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
RIGHT
LEFT
IN
OUT
ON
AMPLIFIER
MODE
MAIN
+
MAIN
MAIN BRIDGE
+
MONITOR
HEADPHONE
OUT
MAIN OUT
LEFT
PMB8.500 MKII
2
1K
+10dB
TAPE
LOW NOISE P
RE
A
500
LEVEL
CH 7-8
R
AUX2
OUT
LOW NOISE P
250
LEVEL
30
Right
0
dB
MAIN
DSP
LEVEL
+10dB
PRESETS:
TO MAIN
-
LEVEL
30
16K
TO MON
-
DSP/FX
AUX2
POST
+10dB
PAN
Left
Right
-
+10dB
10
9
DSP
+10dB
0dB
DSP/FX
AUX2
POST
8
-
PAN
-
+10dB
0dB
DSP/FX
AUX2
POST
+10dB
PAN
Left
Right
8
8
8
Left
0
dB
-
+10dB
-
+10dB
0dB
DSP/FX
AUX2
POST
8
-
PAN
-
+10dB
0dB
DSP/FX
AUX2
POST
+10dB
-
+10dB
0dB
DSP/FX
AUX2
POST
-
-
+10dB
0dB
DSP/FX
PAN
Right
-
+10dB
0
0
-
MON
0dB
8
+15dB
AUX1
PRE
-
9
0
0dB
MON
DSP/FX
9
15
9
80Hz
AUX1
PRE
8
8
-15dB
+15dB
0dB
80Hz
MON
+10dB
Left
80Hz
AUX1
PRE
AUX2
POST
-
-15dB
+15dB
0dB
8
0dB
-15dB
+15dB
0dB
80Hz
MON
+10dB
8
-
-15dB
+15dB
0dB
80Hz
8
-15dB
+15dB
0dB
80Hz
8
-15dB
80Hz
10
15
2
3
10
80Hz
1
15
14
13
0dB
LOW
8
CLIP
MID
2.5KHz
-15dB
+15dB
0dB
OPERATING
DSP
MUTE
+15dB
-15dB
0dB
MID
2.5KHz
-15dB
+15dB
0dB
9
12KHz
16
2.5KHz
-15dB
PBM8.500
4
14
13
8
-20 dB
PAD
8
-20 dB
PAD
0dB
RIGHT
3. QUICK START
This is the fastest way to get something out from your PBM8, if you have a keyboard
and a microphone.
a. Plug the microphone into Channel 1 MIC IN.
b. Turn down AUX and LEVEL controls on the input channel.
c. Turn down MONITOR and MAIN master controls.
d. Put the EQ controls on center position.
e. Connect 2 passive cabinets to the rear speaker cabinets or 2 active cabinets to
the front MAIN OUT connectors.
f. Turn on your PBM8.
g. Sing or speak into the microphone with normal volume and adjust the channel
LEVEL control of half.
h. If you like, you can add some equalization at this stage.
i. Turn up the MAIN LEVEL control until you reach the desired volume. The +10 LED
on the Master LED meter should flash only occasionally, otherwise you will hear the
distortion. If this LED is not active and you still hear distortion, please turn down a
little the input LEVEL control or reduce the output level of your source instrument.
j. Connect your stereo keyboard into channel 7/8 and repeat the sequence.
Here you are. It is your first gig with your PBM8.
3
HOOK
SMALL CLUB
UP
DSP
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
0dB
0dB
HIGH
0dB
HIGH
0dB
HIGH
0dB
HIGH
16
1
2
10
9
8
3
4
5
13
0dB
HIGH
HIGH
HIGH
6
12
12KHz
+15dB
12KHz
+15dB
-15dB
0dB
12KHz
+15dB
-15dB
0dB
12KHz
+15dB
-15dB
0dB
MID
12KHz
+15dB
-15dB
0dB
MID
12KHz
MID
12KHz
+15dB
-15dB
0dB
+15dB
-15dB
0dB
MID
12KHz
MID
0dB
MID
MID
CLIP
DSP
MUTE
+15dB
-15dB
0dB
MUTE
MID
VARIATIONS
16
1
2
10
9
8
2.5KHz
-15dB
+15dB
2.5KHz
-15dB
+15dB
0dB
2.5KHz
-15dB
+15dB
0dB
2.5KHz
-15dB
+15dB
0dB
LOW
2.5KHz
-15dB
+15dB
0dB
LOW
2.5KHz
-15dB
+15dB
0dB
LOW
2.5KHz
-15dB
+15dB
0dB
LOW
+15dB
0dB
LOW
LOW
LOW
MIC3
5
7
AUX1
PRE
AUX1
PRE
AUX1
PRE
AUX1
PRE
AUX1
PRE
AUX1
PRE
AUX1
PRE
AUX1
PRE
8
8
8
+10dB
8
8
8
8
8
8
8
8
AUX2
POST
-
+10dB
PAN
PAN
Left
Right
PAN
Left
Right
0
dB
50
DSP
-
DSP/FX
AUX2
POST
-
+10dB
Left
0
dB
0
0
10
9
15
MONITOR
0
dB
100
250
500
1K
2K5
5K
8K
FEEDBACK
TERMINATOR
+10dB
PRESETS:
1. VOCAL 1
2. VOCAL 2
3. LARGE HALL
4. SMALL HALL
5. LARGE ROOM
6. SMALL ROOM
7. PLATE
8. TAPE REVERB
9. SPRING REVERB
10. MONO DELAY
11. STEREO DELAY
12. FLANGER
13. CHORUS
14. REVERB + DELAY
15. REVERB + FLANGER
16. REVERB + CHORUS
15
10
15
9
0
0
dB
0
dB
9
0
0
10
9
9
15
15
MAIN
0
dB
CH 1
LEVEL
CH 2
CH 3
LEVEL
CH 4
CH 5
LEVEL
-
50
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LOW NOISE P
LOW NOISE P
LOW NOISE P
LOW NOISE P
250
MIC IN (bal.)
2
MIC IN (bal.)
P
1
1
3
2
8K
+10dB
16K
PHANTOM
48V
TAPE TO
CH9-10
AMPLIFIER
MODE
3
MIC IN (bal.)
ON
OFF
MAIN
MONITOR OUT
MAIN
MAIN
+
+
MAIN MONITOR
BRIDGE
HEADPHONE
OUT
MAIN OUT
LEFT
1
3
MIC IN (bal.)
STEREO
RTN
M
MIC IN (bal.)
2
3
RIGHT
LEFT
IN
MIC IN (bal.)
RIGHT
OUT
D/I BOX
D/I BOX
WIRELESS MICROPHONE
1
P
MIC IN (bal.)
2
3
RE
A
M
1
P
MIC IN (bal.)
2
3
LOW NOISE P
RE
A
M
1
P
2
3
LOW NOISE P
RE
A
M
1
P
2
P
P
P
1
3
RE
A
M
M
M
M
2
RE
A
5K
FOOT
SW.
L
TAPE
RE
A
2K5
(MONO)
AUX2
OUT
RE
A
1K
R
(MONO)
L
RE
A
500
FEEDBACK
TERMINATOR
CH 9-10
R
LINE IN
(bal.)
LOW NOISE P
100
+10dB
LEVEL
CH 7-8
CH 6
LINE IN
(bal.)
LOW NOISE P
-
+10dB
8
-
+10dB
8
-
+10dB
LEVEL
8
-
+10dB
8
-
+10dB
LEVEL
8
-
+10dB
8
LEVEL
8
8
-
+10dB
8
-
+10dB
LEVEL
LEVEL
30
DSP
TO MAIN
-
+10dB
16K
Right
0
dB
LEVEL
30
TO MON
+10dB
0dB
DSP/FX
AUX2
POST
-
PAN
Right
0
dB
-
+10dB
0dB
DSP/FX
AUX2
POST
+10dB
Left
Right
0
dB
-
+10dB
0dB
DSP/FX
PAN
Left
Right
-
+10dB
PAN
Left
-
+10dB
0dB
DSP/FX
AUX2
POST
-
+10dB
PAN
0
dB
-
+10dB
0dB
DSP/FX
AUX2
POST
-
+10dB
Right
0
dB
-
+10dB
0dB
DSP/FX
AUX2
POST
-
Left
Right
-
+10dB
0dB
8
-
9
9
15
-
MON
8
8
+15dB
0dB
MON
DSP/FX
10
15
0
6
12
80Hz
-15dB
+15dB
0dB
MON
+10dB
8
80Hz
-15dB
+15dB
0dB
MON
PAN
MIC1 MIC2
80Hz
-15dB
+15dB
0dB
MON
AUX2
POST
-
Left
80Hz
-15dB
+15dB
0dB
MON
+10dB
0dB
80Hz
-15dB
+15dB
0dB
MON
8
-
80Hz
-15dB
+15dB
0dB
MON
8
80Hz
-15dB
+15dB
0dB
9
4
14
13
0dB
LOW
11
80Hz
-15dB
15
3
15
2.5KHz
-15dB
OPERATING
7
11
-15dB
PBM8.250
R
LTO
PRESETS
15
14
0dB
8
-20 dB
PAD
HIGH
8
-20 dB
PAD
0dB
CD PLAYER
DRUM MACHINE
STAGE MONITORS
HOOK
KEYBOARD
BASS GUITAR
GUITAR
MAIN SPEAKERS
COMPUTER SET-UP DIAGRAM
UP
DSP
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
-20 dB
PAD
0dB
0dB
0dB
0dB
0dB
16
1
2
10
9
8
3
4
5
13
0dB
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
12KHz
12KHz
12KHz
12KHz
12KHz
12KHz
12KHz
6
12
+15dB
+15dB
-15dB
0dB
+15dB
-15dB
0dB
+15dB
-15dB
0dB
MID
+15dB
-15dB
0dB
MID
+15dB
-15dB
0dB
MID
+15dB
-15dB
0dB
MID
0dB
MID
MID
CLIP
DSP
MUTE
+15dB
-15dB
0dB
MID
MUTE
MID
VARIATIONS
16
1
2
10
9
8
15
2.5KHz
-15dB
2.5KHz
-15dB
+15dB
2.5KHz
-15dB
+15dB
0dB
2.5KHz
-15dB
+15dB
0dB
2.5KHz
-15dB
+15dB
0dB
LOW
2.5KHz
-15dB
+15dB
0dB
LOW
2.5KHz
-15dB
+15dB
0dB
LOW
0dB
LOW
2.5KHz
-15dB
+15dB
0dB
LOW
+15dB
LOW
LOW
5
AUX1
PRE
AUX1
PRE
AUX1
PRE
AUX1
PRE
AUX1
PRE
AUX1
PRE
AUX1
PRE
AUX1
PRE
8
8
8
+10dB
8
8
8
8
AUX2
POST
-
+10dB
PAN
PAN
Left
Right
0
dB
PAN
Left
Right
0
dB
50
DSP
-
DSP/FX
AUX2
POST
-
+10dB
Left
Right
0
dB
0
0
10
9
15
MONITOR
0
dB
100
250
500
1K
2K5
5K
8K
+10dB
PRESETS:
1. VOCAL 1
2. VOCAL 2
3. LARGE HALL
4. SMALL HALL
5. LARGE ROOM
6. SMALL ROOM
7. PLATE
8. TAPE REVERB
9. SPRING REVERB
10. MONO DELAY
11. STEREO DELAY
12. FLANGER
13. CHORUS
14. REVERB + DELAY
15. REVERB + FLANGER
16. REVERB + CHORUS
15
10
15
9
0
9
0
0
10
9
9
15
15
0
dB
MAIN
0
dB
CH 1
CH 2
CH 3
CH 4
LEVEL
CH 5
-
+10dB
LEVEL
-
50
CH 9-10
R
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LOW NOISE P
LOW NOISE P
LOW NOISE P
LOW NOISE P
LOW NOISE P
100
1
2
1
P
2
P
1
RE
A
M
2
P
1
LOW NOISE P
RE
A
M
2
P
1
5K
8K
+10dB
16K
FOOT
SW.
L
LOW NOISE P
RE
A
M
P
2
RE
A
M
1
P
2
M
P
P
1
M
M
M
2
RE
A
2K5
PHANTOM
48V
AMPLIFIER
MODE
(MONO)
TAPE TO
CH9-10
2
STEREO
RTN
ON
OFF
MAIN
TAPE
RE
A
1K
FEEDBACK
TERMINATOR
AUX2
OUT
RE
A
500
R
(MONO)
L
RE
A
250
+10dB
LEVEL
CH 7-8
CH 6
LINE IN
(bal.)
LOW NOISE P
-
+10dB
8
-
+10dB
8
-
+10dB
LEVEL
8
-
+10dB
LEVEL
8
8
LEVEL
8
-
+10dB
8
8
-
+10dB
LEVEL
LEVEL
30
Right
0
dB
DSP
-
+10dB
LEVEL
+10dB
16K
FEEDBACK
TERMINATOR
TO MAIN
-
LEVEL
30
TO MON
+10dB
0dB
DSP/FX
AUX2
POST
-
PAN
0
dB
-
+10dB
0dB
DSP/FX
AUX2
POST
+10dB
Left
Right
8
8
8
8
8
8
8
8
0
dB
-
+10dB
0dB
DSP/FX
PAN
Left
Right
-
+10dB
PAN
Left
-
+10dB
0dB
DSP/FX
AUX2
POST
-
+10dB
PAN
Right
0
dB
-
+10dB
0dB
DSP/FX
AUX2
POST
-
+10dB
Left
0
dB
-
+10dB
0dB
DSP/FX
AUX2
POST
-
+10dB
Right
-
+10dB
0dB
9
9
15
-
MON
-
0
6
7
+15dB
0dB
MON
DSP/FX
10
15
9
4
12
80Hz
-15dB
+15dB
0dB
MON
8
MIC3
80Hz
-15dB
+15dB
0dB
MON
PAN
MIC1 MIC2
80Hz
-15dB
+15dB
0dB
MON
AUX2
POST
-
Left
80Hz
-15dB
+15dB
0dB
MON
+10dB
0dB
80Hz
-15dB
+15dB
0dB
MON
8
-
80Hz
-15dB
+15dB
0dB
MON
8
80Hz
-15dB
+15dB
0dB
15
3
14
13
0dB
LOW
11
80Hz
-15dB
OPERATING
7
11
-15dB
PBM8.250
R
LTO
PRESETS
15
14
0dB
8
-20 dB
PAD
HIGH
12KHz
8
-20 dB
PAD
0dB
MONITOR OUT
MAIN
+
MAIN
MAIN BRIDGE
+
MONITOR
HEADPHONE
OUT
MAIN OUT
LEFT
1
3
3
3
3
3
3
3
3
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
RIGHT
LEFT
IN
RIGHT
MAIN SPEAKERS
OUT
EQUALIZER
R
LTO
MAC 2.4
Stereo Power Amplifier
ON
WIRELESS MICROPHONE
D/I BOX
D/I BOX
CH1
POWER
CH2
PROT
CLIP
SIG
OFF
POWER
CD PLAYER
POWER AMPLIFIER
DRUM MACHINE
GUITAR
4
BASS GUITAR
KEYBOARD
STAGE MONITORS
ADDITIONAL SPEAKERS
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4.
3. CONTROL ELEMENTS
HT
1 MIC/LINE MONO INPUT (1 to 6)
Your PBM8 is equipped with 6 low-noise microphone
preamplifiers with optional phantom power, 50 dB of
Gain and over 90 dB of S/N ratio. You can connect
almost any type of microphone. Dynamic microphones
do not need phantom power. Use phantom power only
with condenser microphones but make sure that the
phantom power button is disengaged before connecting
the microphone. Phantom power will not damage your
dynamic microphones but it may damage tube or ribbon
microphones. So make sure to read the microphone
instructions manual before engaging phantom power.
Use switch (19) to activate/deactivate phantom power.
These 6 channels are also equipped with 1/4" TRS
balanced/unbalanced LINE-IN plugs to connect line-level
instruments such as keyboards, drum machines and
effect devices.
CH 7-8
CH 6
R
LINE IN
(bal.)
(MONO)
L
LOW NOISE P
LOW NOISE P
RE
A
M
M
1
3
3
MIC IN (bal.)
MIC IN (bal.)
2
1
-20 dB
PAD
10
NOTE: Never try to connect a line-level signal to the
XLR MIC input when the phantom power is engaged,
or you may seriously damage your equipment.
0dB
HIGH
12KHz
2 MIC/LINE STEREO LINE INPUTS
These are channels 7/8 and 9/10. They are organised in
stereo pair and provided with XLR balanced socket and
1/4" TRS phone sockets. If you connect only the left jack,
the input will operate in mono mode, that is the mono
signal will appear on both input channels. You can use
these inputs with a stereo keyboard, drum machine, etc.
P
P
2
1
2
RE
A
9
+15dB
-15dB
0dB
MID
2.5KHz
-15dB
8
+15dB
0dB
LOW
80Hz
-15dB
7
+15dB
0dB
MON
AUX1
PRE
-
0dB
DSP/FX
AUX2
POST
5
+10dB
8
-
PAN
4
Left
Right
0
dB
3
-
8
4 PAN
This is the PANORAMA control, or balance control. You
can adjust the stereo image of the signal via this control.
Keep this control in center position and your signal will
be positioned in the middle of stage. Turn this control
fully counter clockwise and the signal will be present only
on the left speaker and vice-versa. Of course a large
number of intermediate positions are available.
6
+10dB
8
3 LEVEL CONTROL
This control is used to adjust the overall level of respective
channel. The adjustable range goes from
to +10 dB.
+10dB
LEVEL
5
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4.
3. CONTROL ELEMENTS
HT
5 DSP/FX
The AUX2 control is configured as POST-FADER, so the audio signal will be affected
by channel LEVEL control and sent to the resident digital multi-effect. Via the AUX2
OUT jack, the AUX2 signal can be sent to an external effects device, and in such
case the resident digital multi-effects will be automatically disconnected.
6 MON/AUX1
Your PBM8 has two auxiliary sends which can be used for sending signals to
external or internal effects devices or for creating a monitor mix. They are used
to adjust the level of respective channel signal sent to AUX bus, and the adjustable
range goes from - to +10 dB. The AUX1 control is configured as PRE-FADER,
which means that the signal is sent out before reaching the channel fader. It is
used to feed stage monitors in a live situation, or for a headphone mix in recording
application.
EQUALIZATION
You have three EQ controls for each mono and stereo input channel each providing
+/-15dB of boost and cut. The signal will be unaffected when the controls on the
center position. You may use an external equalizer to make up a mix properly but
a master equalizer will not have effect on a single channel and you may overload
the signal easily. Individual EQ will give you a much better control on single tracks.
7 HI
If you turn this control up, you will boost all the frequencies above 12kHz ( shelving
filter ). You will add transparency to vocals and guitar and also make cymbals
crispier. Turn the control down to cut all frequencies above 12kHz. In such way
you can reduce sibilances of human voice or reduce the hiss of a Tape player.
8 MID
This is a peaking filter and it will boost/cuts frequencies with their center at
2.5kHz. This control will affect especially upper male and lower female vocal
ranges and also the harmonics of most musical instruments.
9 LOW
If you turn this control up you will boost all frequencies below 80Hz. You will
give more punch to bass drums and bass guitar; and you will make the male
vocalist more "macho". Turn it down, and you will cut all the frequencies below
80Hz. In this way you can avoid low-frequency vibrations and resonance thus
preserving the life of your woofers.
10 -20 dB PAD
Pressing this button will attenuate the input signal by 20dB. In such way you
can produce increased headroom and reduce the risk of distortion because of
level peaks at input level when the input signal is quite hot.
6
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4.
3. CONTROL ELEMENTS
HT
MASTER SECTION
18
OPERATING
15
15
10
9
9
0
0
0
10
9
9
13
0
dB
LEVEL
30
15
-
50
100
250
500
1K
2K5
5K
8K
+10dB
8
15
MONITOR
16K
11
FEEDBACK
TERMINATOR
15
15
10
9
9
0
0
0
10
9
15
0
dB
-
50
100
250
500
1K
2K5
5K
8K
17
LEVEL
30
16K
FEEDBACK
TERMINATOR
8
9
15
MAIN
15
12
+10dB
16
14
11 STEREO GRAPHIC EQ
Your PBM8 is equipped with two graphic EQs with 9 adjustable bands each; one is
for the MAIN MIX and the other for the MONITOR MIX. Via the faders, you can
boost or cut the selected frequency by +/-15 dB at the indicated frequencies.
When all faders are at the center position, the equalizer will do nothing.
12 FEEDBACK TERMINATOR Button (MONITOR MIX)
Pressing this button the feedback detection function will be activated in the
monitor signal path. Feedback will be identified at a certain frequency when
the correspondent fader LED lights up. Feedback will produce an unpleasant
speaker "howling" or "whistling". In this case, in order to eliminate feedback,
you need to turn down the corresponding fader until feedback disappears.
13 MONITOR LEVEL LED DISPLAY
This LED display will show you the monitor output level. Make sure that the
+10 LED only lights up occasionally. The optimal level is when the -10 and
0 LED light up. If only the -30 LED lights up or even doesn't come to life your
S/N ratio will be degraded.
14 FEEDBACK TERMINATOR Button (MAIN MIX)
By pressing this button, the feedback detection function will be activated in the
Main Mix signal path. Feedback will be identified at a certain frequency when
the correspondent fader LED will light up. Feedback will produce an unpleasant
speaker "howling" or "whistling". In this case, in order to eliminate feedback, you
need to turn down the corresponding fader until feedback disappears.
7
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4.
3. CONTROL ELEMENTS
HT
15 MONITOR LEVEL CONTROL
This control is used to adjust the level of the monitor output.
16 MAIN MIX LEVEL CONTROL
This control is used to adjust the overall volume of the main mix output.
17 MAIN MIX LEVEL LED DISPLAY
This LED display will show you the Main Mix output level. Make sure that the
+10 LED only lights up occasionally. The optimal level is when the -10 and 0
LED light up. If only the -30 LED lights up or even doesn't come to life your
S/N ratio will be degraded.
18 OPERATING LED DISPLAY
The LED indicates when the power
is switched on in your PBM8.
19
20
19 PHANTOM 48V SWITCH
Activating this switch, you will apply +48V phantom power only to the 8 XLR
microphone inputs and only to the XLR MIC sockets. Never plug in a microphone
when phantom power is already on. Before turning phantom power on, make
sure that all faders are all the way down. In this way, you will protect your
stage monitors and main loudspeakers.
20 AMPLIFIER MODE SWITCH
This switch provides three modes: MAIN/MAIN, MAIN/MONITOR and BRIDGE.
Select any one of these modes to route the signals to the corresponding jacks
according to the speaker connection at speaker jacks on the rear panel. You
will find more details about the Amplifier Mode switch later on in this Manual.
MASTER SECTION INPUT AND OUTPUT JACKS
24
26
AUX2
OUT
MAIN OUT
HEADPHONE
OUT
LEFT
LEFT
IN
8
MONITOR OUT
MAIN
RIGHT
25
22
TAPE TO
CH9-10
TAPE
STEREO
RTN
21
RIGHT
OUT
27 28
23
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4.
3. CONTROL ELEMENTS
HT
21 MONITOR OUT JACK
Use this balanced MONITOR jack to connect the input of an external amplifier
or active monitor speaker.
22 MAIN OUT JACKS
These jacks are used to output the Main Mix signal to an external amplifier or
active speaker.
23 HEADPHONE OUT JACK
This is a stereo phone type output jack. It is used to send out the Main Mix
signal to a pair of headphones.
24 AUX2 OUT JACK
The phone jack is used to output the line level signal of the AUX2 post fader
bus. You can use it to feed the inputs of a stereo multi-effects (you will need
a Y-type cable ).
25 STEREO RETURN JACK
Use this stereo phone jack to return the stereo signal of an effect unit into the
Main Mix. You can also use it as the extra auxiliary input.
26 TAPE TO SELECT SWITCH
If you position this switch to the left, you will route the signal fed into the TAPE
IN sockets into CH9~10 path, and the signal will be affected by channel level
control, channel EQ, DSP send, and MAIN level control, while positioning this
switch to the right will route the TAPE IN signal into Main Mix bus. In this case,
signal will be affected only by Main level control.
27 TAPE IN CONNECTORS
Your PBM8 features dual RCA jacks for TAPE IN (left and right). Typically, these
connectors are used to feed into the mixer the stereo signal from a CD Player,
Tape or DAT Player, iPod, MP3 and so on. It is useful to use these inputs this
way if you stop the GIG for a couple of beers or more.
28 TAPE OUT
Your PBM8 also includes dual RCA jacks for stereo out (left and right). Via
these jacks, you can route the Main Mix signal into a tape recorder or DAT for
recording your session.
9
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4.
3. CONTROL ELEMENTS
HT
DSP SECTION
There is a powerful 24-bit/256 preset digital multi-effects included in your PBM8.
Effects include reverbs, chorus, flanger, delay and combinations of the above.
29 PRESETS Control
DSP
This knob will select one of the 16 Factory Presets.
PRESETS
16
30 DSP MUTE Button
1
2
3
15
4
14
This button is used to activate/deactivate the digital
multi-effect. Alternatively, you can also use the DSP
FOOTSWITCH for a faster operation.
5
13
6
12
7
11
10
9
CLIP
30
MUTE
31
8
DSP
MUTE
31 PEAK LED
This LED will flash when the signal input into the
digital multi-effect is too strong. When the digital
effect module is muted by the (30) button the LED
also lights up.
29
VARIATIONS
16
1
2
3
15
4
14
5
13
6
12
32
7
11
10
9
8
32 VARIATIONS Control
33 DSP TO MON
This control is used to control the volume of the
processed signal sent to Monitor Mix, which can
be varied from - to +10 dB.
34 DSP TO MAIN
This control is used to control the volume of the
processed signal sent to Main Mix bus, which can
be varied from - to+10 dB.
DSP
-
8
TO MON
33
+10dB
PRESETS:
1. VOCAL 1
2. VOCAL 2
3. LARGE HALL
4. SMALL HALL
5. LARGE ROOM
6. SMALL ROOM
7. PLATE
8. TAPE REVERB
9. SPRING REVERB
10. MONO DELAY
11. STEREO DELAY
12. FLANGER
13. CHORUS
14. REVERB + DELAY
15. REVERB + FLANGER
16. REVERB + CHORUS
0
dB
DSP
TO MAIN
-
8
For each of the 16 Factory Presets you can apply
up to 16 variations, so in total your PBM8 offers
256 different presets. If you want to know which
Parameter is modified by this control, please look
at the following chart.
34
+10dB
FOOT
SW.
35
35 DSP FOOTSWITCH Socket
This 1/4" phone jack can be used to connect an external optional footswitch to
turn on/off the onboard digital multi-effect.
10
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4.
3. CONTROL ELEMENTS
HT
REAR PANEL
R
LTO
POW ERED MIXER
MODEL: PBM8.250 MK
LEFT/MONO MAIN
POW ER
OUTPUT 2
1+
1POS NEG
36
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
MODEL
WARNING: SHOCK HAZARD - DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR
SERIAL
REPLACE WITH THE SAME TYPE FUSE AND RATING
DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE
CAUTION:
AC
INPUT
100 VAC~60HZ
230 VAC~50HZ
120 VAC~60HZ
240 VAC~50HZ
OUTPUT 2
OUTPUT 1
RIGHT/ MONITOR
BRIDGE MODE
STEREO MODE:
OUTPUT 1
1+
1POS NEG
BRIDGE
2+
1+
POS NEG
250 W @ 4 OHM
190 W @ 8 OHM
BRIDGE MODE:
500 W @ 8 OHM
Use only with a 250V fuse
37
(4 OHM MIN. LOAD)
(8 OHM MIN. LOAD)
OUTPUT 2
2+
2POS NEG
FUSE
250V
T3.15AH
CLASS 2 W IRING MAY BE USED
Apparaten skall anslutas
till jordat uttag nar den
ansluts till ett natverk
38
36 POWER ON/OFF Switch
This switch is used to turn the main power ON and OFF.
37 AC Inlet with FUSE Holder
Use it to connect your PBM8 to the main AC with the supplied AC cord. Please
check the voltage available in your country and how the voltage for your PBM8
is configured before attempting to connect your PBM8 to the main AC.
38 SPEAKERS Jacks
These jacks are used to connect speakers. They are configured with 4-way
speakon connectors and 1/4" phone jacks. You can determine the signal that is
output to these jacks according to the setting of the AMPLIFIER MODE select
switch, as we will describe in a moment.
Note: In order to avoid damage to the built-in amplifier, please pay attention
to the allowed impedance of the speaker. Very low load impedances may damage
The amplifier. Look at this plate on your PBM8 for reference.
STEREO MODE:
250 W @ 4 OHM
190 W @ 8 OHM
STEREO MODE:
(4 OHM MIN. LOAD)
BRIDGE MODE:
500 W @ 8 OHM
(8 OHM MIN. LOAD)
CLASS 2 W IRING MAY BE USED
PBM8.250 MKII
500 W @ 4 OHM
300 W @ 8 OHM
(4 OHM MIN. LOAD)
BRIDGE MODE:
1000 W @ 8 OHM
(8 OHM MIN. LOAD)
CLASS 2 W IRING MAY BE USED
PBM8.500 MKII
11
5. INSTALLATION AND CONNECTION
Ok, you have got to this point and you are now in the position to successfully operate
your PBM8. However, we advise you to read carefully the following section to be the
real master of your own mix. Not paying attention enough to the input signal level, to
the routing of the signal and the assignment of the signal will result in unwanted
distortion, a corrupted signal or no sound at all. So you should follow this procedure
for every single channel:
1. Turn down all Input and output gain controls.
2. Connect phantom powered microphones before switching on the +48 V phantom
power switch.
3. Set the output level of your PBM8 or the connected power amplifier at no more
than 75%.
4. Now, set the MONITOR level at no more than 50%. In this way you will be able to
hear later what you are doing connecting a pair of headphones or a pair of powered
studio monitor speakers.
5. Position EQ controls on middle position.
6. Position panoramic (PAN) control on center position.
7. Increase the input gain properly for maintaining the good headroom and ideal dynamic
range.
8. Depending on the actual application, turn slowly the input and output level controls
for obtaining the maximum gain before distortion.
9. Now repeat the same sequence for all input channels. The main LED meter could
move up into the red section. In this case you can adjust the overall output level
through the MAIN MIX control.
Audio Connections
You can connect unbalanced equipment to balanced inputs and outputs. Simply follow
these schematics.
Sleeve
Tip
Ring
Ring=Right Signal
Strain Clamp
Tip=Left Signal
Sleeve=Ground/Screen
Use for Headphone
1/4" Stereo (TRS) Jack Plug
Sleeve
Tip
Tip=Signal
Strain Clamp
Sleeve=Ground/Screen
Use for Mono Line In, Mono 1/4"Jack Plugs
1/4" Mono (TS) Jack Plug
12
5.
INSTALLATION
AND CONNECTION
3. CONTROL
ELEMENTS
Sleeve
Ring=Return Signal
Tip
Ring
Strain Clamp
Tip=Send Signal
Sleeve=Ground/Screen
Use for Insert Points
1/4" Stereo (TRS) Jack Plug
2=Hot(+)
2
3
1
1=Ground/Screen
2
2=Hot(+)
3
1
1=Ground/Screen
3=Cold(-)
3=Cold(-)
Use for Balanced Mic Inputs
(For unbalanced use, connect pin 1 to 3)
Use for Main output
(For unbalanced use, leave pin3 unconnected)
3-pin XLR Male Plug
3-pin XLR Line Socket
(seen from soldering side)
(seen from soldering side)
MAIN SPEAKERS CONNECTION
Please use only the power connectors to make connections with other signal
source equipment for the passive speaker cabinets. The power connector has
four terminals: 1+, 1-, 2+, 2-.
1-
2-
1+
2+
Speakon connector
13
5.
INSTALLATION
AND CONNECTION
3. CONTROL
ELEMENTS
And now some tips how to use the AMPLIFIER MODE switch
Main Speaker
LEFT/ MONO MAIN
AMPLIFIER
MODE
OUTPUT 2
1+
1POS NEG
OUTPUT 2
OUTPUT 1
MAIN MAIN BRIDGE
+
+
MAIN MONITOR
RIGHT/ MONITOR
BRIDGE MODE
OUTPUT 1
1+
1POS NEG
BRIDGE
2+
1+
POS NEG
OUTPUT 2
2+
2POS NEG
Use either the speakon jacks
or phone jacks
Main Speaker
MAIN + MAIN Mode
This is the most common application. The built-in amplifier drives two man
speaker cabinets Left and Right. The AMPLIFIER MODE is on MAIN+MAIN
position.
Main Speaker
LEFT/ MONO MAIN
AMPLIFIER
MODE
OUTPUT 2
1+
1POS NEG
OUTPUT 2
OUTPUT 1
MAIN
MAIN BRIDGE
+
+
MAIN MONITOR
RIGHT/ MONITOR
BRIDGE MODE
OUTPUT 1
1+
1POS NEG
BRIDGE
2+
1+
POS NEG
OUTPUT 2
2+
2POS NEG
Monitor Speaker
Use either the speakon jacks
or phone jacks
MAIN + MONITOR Mode
With the AMPLIFIER MODE in MAIN+MONITOR position, channel1 drives a
Main speaker cabinet while channel2 drives a stage monitor.
14
5.
INSTALLATION
AND CONNECTION
3. CONTROL
ELEMENTS
Main Speaker
LEFT/ MONO MAIN
OUTPUT 2
1+
1POS NEG
AMPLIFIER
MODE
OUTPUT 2
OUTPUT 1
MAIN
+
MAIN
RIGHT/ MONITOR
BRIDGE MODE
OUTPUT 1
1+
1POS NEG
BRIDGE
2+
1+
POS NEG
OUTPUT 2
2+
2POS NEG
MAIN
BRIDGE
+
MONITOR
Bridge Mode
With the AMPLIFIER MODE switch in BRIDGE position, the two power amplifiers
in your PBM8 drive together a single speaker cabinet with the sum of the power
of the 2 amps. Usually this solution is used to drive a single subwoofer and the
MAIN OUT output on the front panel are used to feed a pair of powered speakers
as mid-high units.
15
6. PRESET LIST
NO.
Preset
Description
Controllable Parameter
Parameter
Variable range
1
VOCAL1
Simulate a room with small delay time.
Decay time
Pre-delay
0.8~1.1s
0~79ms
2
VOCAL2
Simulate a small space with slight decay time
Decay time
Pre-delay
0.8~2.5s
0~79ms
3
LARGE HALL
Simulate a large acoustic space of the sound.
Decay time
Pre-delay
3.6~5.4s
23~55ms
4
SMALL HALL
Simulate a stage space of the sound.
Decay time
Pre-delay
1.0~2.9s
20~45ms
5
LARGE ROOM
Simulate a studio room with many early reflections
Decay time
Pre-delay
2.9~4.5s
23~55ms
6
SMALL ROOM
Simulate a bright studio room.
Decay time
Pre-delay
7
PLATE
Simulate the transducers sound like classic bright
vocal plate.
Decay time
Pre-delay
0.7~2.1s
20~45ms
0.6~6.1s
10ms
8
TAPE REVERB
Simulate a record head and multiple playback heads
at intervals along the tape.
Decay time
Pre-delay
1.3~5.4s
0~84ms
9
SPRING REVERB Simulate the analog transducers' springs lightly
stretched sound.
Decay time
Pre-delay
1.3~5.4s
0~35ms
10
MONO DELAY
Reproduce the sound input on the output after a
lapse of time.
11
STEREO DELAY
Recreate the input sound on the stereo output with
different time.
12
FLANGER
Simulate to play with another person carrying
out same the notes on the same instrument
Rate
0.16~2.79Hz
13
CHORUS
Recreate the illusion of more than one instrument
from a single instrument sound
Rate
0.5~5Hz
14
REV.+DELAY
Delay with room effect
15
16
16
Period
Period
Feedback
60~650ms
210~400ms
37~73%
Decay period
Rev.decay time
211~375ms
1.0~2.9s
REV.+FLANGER Stereo chorus and large room reverb
Flanger Rate
Rev.decay time
0.16~2.52Hz
REV.+CHORUS
Chorus rate
Rev.decay time
0.5~4.74Hz
1.5~2.9s
Stereo flanger and large room reverb
7. BLOCK DIAGRAM
17
6.
8. TECHNICAL
TECHNICALSPECIFICATIONS
SPECIFICATION
Mono input channels
Microphone input
Frequency response
Distortion (THD & N)
Gain
SNR (Signal to Noise Ratio)
Line input
Frequency response
Distortion (THD & N)
Gain
Stereo input channels
Line input
Frequency response
Distortion (THD & N)
Impedances
Microphone input
Channel Insert return
All other inputs
Tape out
All other output
Equalization
Hi shelving
Mid bell
Low shelving
DSP Section
A/D and D/A converters
DSP resolution
Type of effects
Presets
Controls
Main Mix Section
Noise
(bus
noise)
Noise
(Bus
noise)
Max output
AUX Sends max out
Power supply
Main voltage
Electronically balanced, discrete input configuration
10 Hz to 55 kHz, +/ 3 dB
0.006% at +4 dBu, 1 kHz
50 dB (MIC)
>90 dB
Electronically balanced
10 Hz to 55 kHz, +/ 3 dB
0.04% at +4 dBu, 1 kHz
30 dB
Unbalanced
10 Hz to 55 kHz, +/ 3 dB
0.006% at +4 dBu, 1 kHz
1.4 kOhm
2.5 kOhm
10 kOhm or greater
1 kOhm
120 Ohm
+/
+/
+/
15 dB @12 kHz
15 dB @ 2.5 kHz
15 dB @ 80 Hz
24 bit
24 bit
Hall, Room, Vocal & Plate REVERBS
Mono & Stereo DELAY (max DELAY TIME 650ms)
Chorus, Flanger & Reverb MODULATIONS
REVERB+DELAY, REVERB+CHORUS,
REVERB+FLANGER combinations
256
16-position PRESET Selector
16-position VARIATION selector
CLIP LED
MUTE SWITCH with LED indicator
Fader
0dB,
all input
channels
assigned
and
set to
Fader
0 dB,
channels
muted:
85dBr
(ref.:+4dBu)
UNITY gain: 71 dBr (ref.:+4 dBu)
+27 dBu balanced ,
+22 dBu unbalanced, 1/4" jacks
+22 dBu
100 VAC ~ 60 Hz
120 VAC ~ 60 Hz
Power Consumption
PBM8.250 MKII
Stereo mode: 250 W @ 4 ohm(EIAJ)
190 W @ 8 ohm(EIAJ)
Bridge mode: 500 W @ 8 ohm(EIAJ)
PBM8.500 MKII
Stereo mode: 500 W @ 4 ohm(EIAJ)
300 W @ 8 ohm(EIAJ)
Bridge mode: 1000 W @ 8 ohm(EIAJ)
18
230 VAC ~ 50 Hz
240 VAC ~ 50 Hz
222 W @ 4 ohm(RMS) THD=1%
149 W @ 8 ohm(RMS) THD=1%
415 W @ 8 ohm(RMS) THD=1%
400 W @ 4 ohm(RMS) THD=1%
263 W @ 8 ohm(RMS) THD=1%
738 W @ 8 ohm(RMS) THD=1%
6.
8. TECHNICAL
TECHNICALSPECIFICATIONS
SPECIFICATION
Fuse
PBM8.250 MKII
PBM8.500 MKII
Physical
Dimension (W D H)
Weight
100 ~ 120V : T6.3AL
210 ~ 240V : T3.15AL
100 ~ 120V : T10AL
210 ~ 240V : T6.3AL
550 220 310 mm
(8.66" 12.20" 21.65")
PBM8.250 MKII (Net) : 13.2kg (28.70lb)
(Gross) : 15.93kg (35.11lb)
PBM8.500 MKII (Net) : 13.5kg (29.76lb)
(Gross) : 16.26kg (35.84lb)
19
9. WARRANTY
1. WARRANTY REGISTRATION CARD
To obtain Warranty Service, the buyer should first fill out and return the enclosed
Warranty Registration Card within 10 days of the Purchase Date.
All the information presented in this Warranty Registration Card gives the
manufacturer a better understanding of the sales status, so as to provide a
more effective and efficient after-sales warranty service. Please fill out all the
information carefully and genuinely, miswriting or absence of this card will void
your warranty service.
2. RETURN NOTICE
2.1 In case of return for any warranty service, please make sure that the
product is well packed in its original shipping carton, and it can protect your
unit from any other extra damage.
2.2 Please provide a copy of your sales receipt or other proof of purchase with
the returned machine, and give detail information about your return address
and contact telephone number.
2.3 A brief description of the defect will be appreciated.
2.4 Please prepay all the costs involved in the return shipping, handling and
insurance.
3. TERMS AND CONDITIONS
3.1 LTO warrants that this product will be free from any defects in materials
and/or workmanship for a period of 1 year from the purchase date if you
have completed the Warranty Registration Card in time.
3.2 The warranty service is only available to the original consumer, who purchased
this product directly from the retail dealer, and it can not be transferred.
3.3 During the warranty service, LTO may repair or replace this product at its
own option at no charge to you for parts or for labor in accordance with the
right side of this limited warranty.
3.4 This warranty does not apply to the damages to this product that occurred
as the following conditions:
Instead of operating in accordance with the user's manual thoroughly, any abuse
or misuse of this product.
Normal tear and wear.
The product has been altered or modified in any way.
Damage which may have been caused either directly or indirectly by another
product / force / etc.
Abnormal service or repairing by anyone other than the qualified personnel or
technician.
And in such cases, all the expenses will be charged to the buyer.
3.5 In no event shall LTO be liable for any incidental or consequential damages.
Some states do not allow the exclusion or limitation of incidental or
consequential damages, so the above exclusion or limitation may not apply to
you.
3.6 This warranty gives you the specific rights, and these rights are compatible
with the state laws, you may also have other statutory rights that may vary
from state to state.
20
SEIKAKU TECHNICAL GROUP LIMITED
NO. 1, Lane 17, Sec. 2, Han Shi West Road, Taichung 40151, Taiwan
http://www.altoproaudio.com Tel: 886-4-22313737
email: [email protected] Fax: 886-4-22346757
All rights reserved to ALTO. All features and content might be changed
without prior notice. Any photocopy, translation, or reproduction of part of this
manual without written permission is forbidden. Copyright c 2007 Seikaku Group
NF02299-1.1