Download Mackie SRM1801 Owner`s manual

SRM1801
18” Powered Subwoofer
OWNER’S MANUAL
Important Safety Instructions
1. Read these instructions. 2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the
manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type
plug. A polarized plug has two blades with one wider than the other.
A grounding-type plug has two blades and a third grounding prong.
The wide blade or the third prong are provided for your safety. If the
provided plug does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
10.Protect the power cord from being walked on or pinched particularly at
plugs, convenience receptacles, and the point where they exit from the
apparatus.
11.Only use attachments/accessories specified by the manufacturer.
12.Unplug this apparatus during lightning storms or when unused for long
periods of time.
13.Refer all servicing to qualified service personnel. Servicing is required
when the apparatus has been damaged in any way, such as powersupply cord or plug is damaged, liquid has been spilled or objects have
fallen into the apparatus, the apparatus has been exposed to rain or
moisture, does not operate normally, or has been dropped.
14.This apparatus shall not be exposed to dripping or splashing, and no
object filled with liquids, such as vases or beer glasses, shall be placed
on the apparatus.
15.Do not overload wall outlets and extension cords as this can result in a
risk of fire or electric shock.
16.This apparatus has been designed with Class-I construction and must
be connected to a mains socket outlet with a protective earthing connection (the third grounding prong).
17.This apparatus has been equipped with a rocker-style AC mains power
switch. This switch is located on the rear panel and should remain
readily accessible to the user.
18.The MAINS plug or an appliance coupler is used as the disconnect
device, so the disconnect device shall remain readily operable.
CAUTION
AVIS
RISK OF ELECTRIC SHOCK. DO NOT OPEN
RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK)
NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL
ATTENTION: POUR EVITER LES RISQUES DE CHOC ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE.
AUCUN ENTRETIEN DE PIECES INTERIEURES PAR L'USAGER.
CONFIER L'ENTRETIEN AU PERSONNEL QUALIFIE.
AVIS: POUR EVITER LES RISQUES D'INCENDIE OU D'ELECTROCUTION, N'EXPOSEZ PAS CET ARTICLE
A LA PLUIE OU A L'HUMIDITE
The lightning flash with arrowhead symbol within an equilateral triangle is
intended to alert the user to the presence of uninsulated "dangerous
voltage" within the product's enclosure, that may be of sufficient magnitude
to constitute a risk of electric shock to persons.
Le symbole éclair avec point de flèche à l'intérieur d'un triangle équilatéral
est utilisé pour alerter l'utilisateur de la présence à l'intérieur du coffret de
"voltage dangereux" non isolé d'ampleur suffisante pour constituer un risque
d'éléctrocution.
The exclamation point within an equilateral triangle is intended to alert the
user of the presence of important operating and maintenance (servicing)
instructions in the literature accompanying the appliance.
Le point d'exclamation à l'intérieur d'un triangle équilatéral est employé
pour alerter les utilisateurs de la présence d'instructions importantes pour le
fonctionnement et l'entretien (service) dans le livret d'instruction
accompagnant l'appareil.
19.NOTE: This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or
more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
CAUTION: Changes or modifications to this device not expressly
approved by LOUD Technologies Inc. could void the user's authority to
operate the equipment under FCC rules.
20.This apparatus does not exceed the Class A/Class B (whichever is
applicable) limits for radio noise emissions from digital apparatus as
set out in the radio interference regulations of the Canadian Department
of Communications.
ATTENTION — Le présent appareil numérique n’émet pas de bruits
radioélectriques dépassant las limites applicables aux appareils
numériques de class A/de class B (selon le cas) prescrites dans le
réglement sur le brouillage radioélectrique édicté par les ministere des
communications du Canada.
21.Exposure to extremely high noise levels may cause permanent hearing
loss. Individuals vary considerably in susceptibility to noise-induced
hearing loss, but nearly everyone will lose some hearing if exposed to
sufficiently intense noise for a period of time. The U.S. Government’s
Occupational Safety and Health Administration (OSHA) has specified
the permissible noise level exposures shown in the following chart.
According to OSHA, any exposure in excess of these permissible limits
could result in some hearing loss. To ensure against potentially dangerous exposure to high sound pressure levels, it is recommended that all
persons exposed to equipment capable of producing high sound pressure levels use hearing protectors while the equipment is in operation.
Ear plugs or protectors in the ear canals or over the ears must be worn
when operating the equipment in order to prevent permanent hearing
loss if exposure is in excess of the limits set forth here:
Duration,
per day in
hours
8
6
4
3
2
1.5
1
0.5
0.25 or less
Sound Level
dBA, Slow
Response
90
92
95
97
100
102
105
110
115
Typical Example
Duo in small club
Subway Train
Very loud classical music
Greg and Ben screaming at Troy about deadlines
Loudest parts at a rock concert
WARNING — To reduce the risk of fire or electric shock, do not
expose this apparatus to rain or moisture.
CAUTION — To prevent electric shock hazard, do not
connect to mains power supply while grille is removed.
Correct Disposal of this product: This symbol indicates that this product should not be disposed of with your household waste, according to the WEEE
Directive (2012/19/EU) and your national law. This product should be handed over to an authorized collection site for recycling waste electrical and
electronic equipment (EEE). Improper handling of this type of waste could have a possible negative impact on the environment and human health due
to potentially hazardous substances that are generally associated with EEE. At the same time, your cooperation in the correct disposal of this product will
contribute to the effective usage of natural resources. For more information about where you can drop off your waste equipment for recycling, please
contact your local city office, waste authority, or your household waste disposal service.
2
CONTENTS
What? Me read a manual?
SAFETY INSTRUCTIONS............................................ 2
GETTING STARTED.................................................... 4
INTRODUCTION....................................................... 5
HOOKUP DIAGRAMS............................................... 6
MACKIE SRM1801 FEATURES .................................. 8
1. IEC AC RECEPTACLE...................................... 8
2.POWER ...................................................... 8
3.INPUTS....................................................... 9
4. FULL RANGE OUTPUTS................................. 9
5. HIGH PASS OUTPUTS................................... 9
6.POLARITY................................................... 9
7.LEVEL........................................................ 10
8. THERMAL LED............................................ 10
9. OL LED...................................................... 10
10.SIGNAL LED............................................... 10
11.POWER LED............................................... 10
INS AND OUTS OF POLARITY.................................. 11
PROTECTION CIRCUITS........................................... 12
LIMITING............................................................... 12
OVEREXCURSION PROTECTION.............................. 12
THERMAL PROTECTION.......................................... 12
PLACEMENT........................................................... 12
CARE AND MAINTENANCE...................................... 12
APPENDIX A: SERVICE INFORMATION..................... 13
APPENDIX B: CONNECTIONS ................................. 15
APPENDIX C: SRM1801 SPECIFICATIONS................ 16
MACKIE LIMITED WARRANTY................................. 18
Before you begin, please make sure you read the
Safety Instructions on page 2 and Getting Started
on page 4.
Your new Mackie SRM1801 powered subwoofers
are designed to set up quickly and operate easily.
We know it’s often seen as a sign of weakness to
read a manual, along with asking for directions
when lost, but we hope you will read the rest of the
manual, at least while nobody is looking.
It is important to keep your receipt in a
safe place, and not a bad idea to write your
product information below for future reference
(i.e., insurance claims, tech support, return
authorization, etc.).
Please write the serial number for your SRM1801 here
(or for both SRM1801’s if you have two) for ­future reference
(i.e., insurance claims, tech support, return authorization, etc.):
Subwoofer 1
Subwoofer 2
Purchased at:___________________________________ Date of Purchase:_____________
Don’t forget to visit our website at www.mackie.com
for more information about this and other Mackie products.
Part No. SW0842 Rev. D 12/13
©2013 LOUD Technologies Inc. All Rights Reserved.
3
Getting Started
The following steps will help you set up your
subwoofer(s) quickly.
INITIAL SETTINGS:
1. Turn the LEVEL control on the rear panel all the
way down.
2. Turn the POWER switch OFF.
CONNECTIONS:
1. Connect the line-level signal from a mixer (or other
signal source) to the INPUT jack on the SRM1801
rear panel (XLR connector). If you are operating the
system in stereo, connect INPUT B, as well.
2. Connect the supplied AC power cord to the IEC
socket on the back of the subwoofer. Plug the other
end into an AC outlet properly configured with the
correct voltage as indicated just above the IEC
socket.
TURN IT ON:
1. Turn the POWER switch ON.
2. Start your signal source (mp3 player, CD, DAW,
band, or whatever), but leave the master level
control on your mixer down.
3. Slowly turn up the LEVEL control on the SRM1801
to the “U” (unity gain) mark at the center position.
4. Adjust the master volume on your mixer to a
comfortably loud listening level. If the volume from
the subwoofer gets really loud, really fast, try turning
down the LEVEL control on the SRM1801 a bit. If
the subwoofers don’t get loud enough, turn up the
LEVEL control to achieve a good balance of master
volume control and loudness from the subwoofer.
Now that you have your subwoofers working, it’s time
to hunker down and read the rest of this manual…
especially the following:
ADDITIONAL TIDBITS OF WIDSDOM:
• Never listen to loud music for prolonged periods. Please see the Safety Instructions on page 2 for information on hearing protection.
• When you shut down your equipment, turn off the SRM1801 subwoofers first to prevent thumps and other noises generated by any upstream equipment from coming out the speakers. When powering up, turn on the SRM1801 last, but just before your full-range loudspeakers.
• Save the shipping boxes and packing materials! You may need them someday. Besides, your cat will love playing in them and jumping out at you unexpectedly. Remember to pretend like you are surprised!
• Save your sales receipt in a safe place.
• Record the serial number in the space provided on page 3, along with where and when you bought it.
THERMAL
OL
SIGNAL POWER
LEVEL
- 6dB
OUTPUTS
A
HIGH PASS
B
A
FULL RANGE
B
+6dB
POL ARITY
NORMAL
INVERT
A
INPUTS
18-INCH POWERED SOUND REINFORCEMENT SUBWOOFER
B
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE
AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
SERIAL NUMBER
POWER
I
O
4
REVISION
Introduction
Thank you for choosing the Mackie SRM1801 subwoofer. Mackie’s SRM Series powered loudspeakers achieve the
perfect balance of power, portability, and sound quality. Designed by the same team that produced the best-selling
Mackie SRM450v2, the SRM1801 delivers real power in a design that is extremely lightweight and portable. The
SRM1801 incorporates Mackie-standard professional components like efficient Class-D Fast Recovery™ amplifiers
and system-optimizing Active electronics so that everything sounds great right out of the box.
The SRM1801 all-wood enclosure has a ported bass reflex design that produces tight low end. And the
lightweight, ultra-efficient Class-D Fast Recovery™ power amplifier delivers 1000W peak power with less risk of
thermal overload. This makes the sub extremely lightweight and portable without compromising the power and
performance that you deserve. Pair this power with our proven built-in Active electronics, including a precision
crossover and tuning filters, and you get professional low end that you can feel...custom tuned to be tight and
punchy.
Pair the SRM1801 with the best-selling SRM450v2 and you have a complete (and completely affordable) “plug
and play” system that is ideal for small clubs, DJs and rehearsal spaces. The SRM1801 has both full-range and
high-pass stereo outputs for connection to full-range top boxes. Just dial in the appropriate level and use the
polarity switch to make sure the sub is in phase with the loudspeakers. The integrated pole-cup can accommodate
a standard mounting pole, so your favorite speaker has a nice place to sit. Or you can just stack your full-range box
right on top of the sub...the SRM1801 ain’t picky.
So if you are looking for an extremely powerful, professional and great sounding PA setup that is simple to use
and easy on the wallet, then you’re in the right place.
Here are a few of the key features of your new Mackie SRM1801:
• 1000W of ultra-efficient Class-D Fast Recovery™ amplification
• Mackie Active electronics provide total system optimization
• Precision crossover (125Hz)
• Tuning filters for accurate bass response
• 18-inch woofer delivers superior output and low-frequency extension
• Dual XLR inputs for mono or stereo applications
• Stereo high-pass and full-range outputs
• User-adjustable level and polarity controls
• Individual power, signal, OL, and thermal protect indicators
• Pole receptacle for mounting full-range loudspeakers
• Solid plywood enclosure with high durability, textured black paint
• Extremely lightweight and portable (73 lbs / 33.1 kg)
Read on to learn everything you could possibly want to know about your new subwoofer.
5
Hookup Diagrams
Main PA System with one subwoofer and two powered loudspeakers
ACTIVE SOUND REINFORCEMENT SYSTEM
ACTIVE SOUND REINFORCEMENT SYSTEM
Left and Right Main
Powered Loudspeakers
(Mackie SRM450v2 shown)
MIC
MIC
MIC
MIC
MIC
MIC
(UNBALANCED)
L
L
TAPE
IN
TAPE
OUT
R
R
THERMAL
OL
SIGNAL POWER
PROFESSIONAL MIC/LINE MIXER WITH FX
OUTPUTS
LEVEL
A
HIGH PASS
B
A
FULL RANGE
B
1
LINE
HI-Z
2
3
4
5/6
7/8
(MONO)
BAL /
UNBAL
BAL /
UNBAL
BAL /
UNBAL
BAL /
UNBAL
LINE IN 2
LINE IN 3
LINE IN 4
LINE IN 5
INSERT
INSERT
INSERT
INSERT
LINE IN 6
9/10
(MONO)
L
LINE/HI-Z IN 1
LINE IN 7
11/12
(MONO)
L
BAL /
UNBAL
(MONO)
L
BAL /
UNBAL
(MONO)
L
BAL /
UNBAL
LINE IN 9
LINE IN 11
BAL /
UNBAL
L
BAL /
UNBAL
BAL /
UNBAL
L
BAL /
UNBAL
MON SEND
FOOTSWITCH
+6dB
- 6dB
R
POL ARITY
NORMAL
INVERT
U
M
High Pass
Output
18-INCH POWERED SOUND REINFORCEMENT SUBWOOFER
INPUTS
A
IC GAIN
U
-20dB
U
IC GAIN
U
-20dB
GAIN
B
M
LEVEL
SET
+50
+30dB
-15 +15
U
-15 +15
U
LOW
80Hz
MON
OO
+15
U
OO
+15
MON
OO
+15
U
OO
+15
FX
From Mixer
Left and Right
Outputs
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE
AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIRPARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
REVISION
SERIAL NUMBER
+15
U
OO
+15
+15
U
OO
+15
+15
U
OO
+15
+15
U
OO
+15
+15
U
OO
+15
MON
OO
+15
U
OO
+15
FX
PAN
125
AUX
MON
OO
FX
PAN
FX
PAN
48V
0
5
15
LOW
80Hz
U
PHANTOM
POWER
5
10
-15 +15
AUX
MON
OO
FX
PAN
U
PHONES
15
10
15
250
500
1K
2K
MAIN MIX
MON
4K
0dB=0dBu
OL
15
10
6
3
0
2
4
7
10
20
30
USB
FX PRESETS
01 BRIGHT ROOM
02 WARM LOUNGE
03 SMALL STAGE
04 WARM THEATER
05 WARM HALL
06 CONCERT HALL
07 PLATE REVERB
08 CATHEDRAL
09 CHORUS
10 CHORUS + REV
11 DOUBLER
12 TAPE SLAP
13 DELAY 1 (300ms)
14 DELAY 2 (380ms)
15 DELAY 3 (480ms)
16 REVERB + DLY (250ms)
PAN
POWER
MAIN
METERS
8K
EQ IN
BYPASS
-15 +15
U
LOW
80Hz
-15 +15
AUX
MON
OO
FX
PAN
U
R
MAIN OUT
FX SEND
10
HI
12kHz
MID
2.5kHz
-15 +15
U
LOW
80Hz
-15 +15
BAL /
UNBAL
R
0
5
EQ
-15 +15
U
MID
2.5kHz
-15 +15
U
AUX
MON
OO
FX
PAN
U
-15 +15
U
MID
2.5kHz
-15 +15
AUX
MON
OO
FX
PAN
U
-15 +15
U
LOW
80Hz
-15 +15
AUX
U
U
HI
12kHz
15
10
5
GAIN
EQ
U
HI
12kHz
-15 +15
U
LOW
80Hz
-15 +15
AUX
U
EQ
U
MID
2.5kHz
-15 +15
U
LOW
80Hz
-15 +15
AUX
U
-15 +15
U
LOW
80Hz
-15 +15
U
-20 +20
GAIN
ST RETURN
STEREO GRAPHIC EQ
U
LOW CUT
100 Hz
-15 +15
U
MID
2.5kHz
R
LINE IN 12
-20 +20
LEVEL
SET
GAIN
HI
12kHz
-15 +15
U
R
LINE IN 10
+50
EQ
U
HI
12kHz
MID
2.5kHz
U
LOW CUT
100 Hz
EQ
U
C GAIN
MI
LEVEL
SET
+50
GAIN
LOW CUT
100 Hz
-15 +15
U
MID
2.5kHz
U
GAIN
HI
12kHz
-15 +15
U
MID
2.5kHz
C GAIN
MI
LEVEL
SET
+50
+30dB
EQ
U
HI
12kHz
-15 +15
U
IC GAIN
U
-20dB
LOW CUT
100 Hz
EQ
U
HI
12kHz
U
M
LEVEL
SET
+50
+30dB
GAIN
LOW CUT
100 Hz
EQ
IC GAIN
U
-20dB
GAIN
LOW CUT
100 Hz
U
U
M
LEVEL
SET
+50
+30dB
R
LINE IN 8
U
OO
PRESETS
+20
L
INPUT LEVEL
R
MUTE
USB THRU
U
BREAK
(MUTES ALL CHANNELS)
U
U
OL
L
R
L
MUTE
R
L
MUTE
OL
dB
10
R
L
MUTE
OL
1
R
L
MUTE
OL
2
L
R
MUTE
OL
3
R
L
MUTE
OL
4
R
L
MUTE
OL
5/6
R
OO
OL
9/10
+15
OO
FX MASTER
MUTE
OL
7/8
+15
OO
ST RTN
MAX
OO
MAIN
MON
FX RTN
dB
10
dB
10
5
5
5
5
5
5
5
5
5
5
5
U
U
U
U
U
U
U
U
U
U
U
U
dB
10
dB
10
dB
10
dB
10
dB
10
dB
10
dB
10
dB
10
dB
10
+20
TAPE LEVEL
PHONES
FX TO MON
MUTE
OL
11/12
5
5
5
5
5
5
5
5
5
5
5
5
5
10
10
10
10
10
10
10
10
10
10
10
10
20
20
20
20
20
20
20
20
20
20
20
20
30
30
30
30
30
30
30
30
30
30
30
30
40
50
60
40
50
60
40
50
60
40
50
60
40
50
60
40
50
60
40
50
60
40
50
60
40
50
60
40
50
60
40
50
60
40
50
60
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
OO
Mixing Console
(Mackie ProFX12 shown)
POWER
I
O
The left and right line-level outputs from a mixer feed the inputs of the Mackie SRM1801 powered
subwoofer. The high pass line-level outputs of the subwoofer feed the inputs of the Mackie SRM450v2
powered loudspeakers, so these reproduce the mid-to-high frequencies in stereo, and the sub provides
the low frequencies in mono.
Main PA System with two subwoofers and two powered loudspeakers
ACTIVE SOUND REINFORCEMENT SYSTEM
ACTIVE SOUND REINFORCEMENT SYSTEM
Left Main
Powered Loudspeaker
(Mackie SRM450v2 shown)
Right Main
Powered Loudspeaker
(Mackie SRM450v2 shown)
High Pass
Output
THERMAL
OL
SIGNAL POWER
LEVEL
- 6dB
THERMAL
OUTPUTS
A
HIGH PASS
B
A
FULL RANGE
B
NORMAL
INVERT
A
INPUTS
18-INCH POWERED SOUND REINFORCEMENT SUBWOOFER
B
From Mixer
Right Output
MIC 1
MIC 3
MIC 2
MIC 4
MIC 5
MIC 7
MIC 6
MIC 8
STEREO EFX
RETURN
L
EFX SEND
1
2
BAL/UNBAL
BAL/UNBAL
BAL/UNBAL
BAL/UNBAL
BAL/UNBAL
BAL/UNBAL
BAL/UNBAL
TAPE
INPUT
R
1
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
LINE IN
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
ZERO
ZERO
LEVEL
5
+50
-15dB +30dB
HI
12k
-15 +15
600
100
11
LEFT
LEFT
RIGHT
RIGHT
10
12
100
-15 +15
600
LOW
80Hz
100
100
R
L
1
1
L
1-2
100
M
M
HI
12k
1-2
5
L
100
1-2
5
100
L
1-2
5
+15
OO
TO MAIN MIX
1K
4K
8K
LOW
MID
400Hz
LOW
80Hz
+15
OO
+15
POWER
SUB
ASSIGN
1-2
10
7
LEFT
5
SUB
0
2
0
2
4
7
ZERO
LEVEL
SET
10
20
10
3
SUB
ASSIGN
LEFT
5
4
LEFT
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
10
10
10
10
10
10
10
10
10
10
10
10
10
10
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
40
50
60
SOLO
PFL
40
50
60
OO
SOLO
PFL
40
50
60
OO
SOLO
PFL
40
50
60
OO
SOLO
PFL
40
50
60
OO
SOLO
PFL
40
50
60
OO
SOLO
PFL
40
50
60
OO
SOLO
PFL
40
50
60
OO
SOLO
PFL
40
50
60
OO
SOLO
PFL
REVISION
POWER
5
U
5
OO
SERIAL NUMBER
dB
10
RIGHT
U
20
SOLO
PFL
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE
AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIRPARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
STEREO
STEREO
MAIN MIX
ASSIGN
dB
10
RIGHT
U
RUDE
SOLO
OO
+10
UTILITY OUT LEVEL
DEPTH
SUB
dB
10
RIGHT
30
40
50
60
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
0dB=0dBu
DAMPING
2
LEFT
5
U
4
OO
+20
TAPE LEVEL
BREAK SWITCH
(MUTES ALL CHANNELS)
30
BYPASS
ASSIGN
dB
10
RIGHT
U
10
OO
STATUS
22
U
NORMAL
EFX
WIDE
REVERBS
DELAYS
CHORUS/FLANGE/PHASER
1
ASSIGN
dB
10
3-4
CLIP
1 RETURN
OO MAX
PHONES LEVEL
U
10
RATE
R
MUTE
5
U
+20
OO
EFX
DELAY 1
DELAY 2
DELAY 3
DELAY 4
CHORUS
FLANGE
PHASER
SPRING
NORMAL
PAN
L
dB
10
3-4
16K
48v
U
-15 +15
1-2
5
U
2K
PHANTOM POWER
U
AUX 1
AUX 2
EFFECTS TO MONITOR
REVERSE
GATED
CATHEDRAL
HALL
HALL
PLATE
PLATE
ROOM
11-12
ASSIGN
dB
10
3-4
U
+15
OO
EFX 2
SEND
-15 +15
U
LOW
80Hz
R
MUTE
1-2
5
U
500
STEREO GRAPHIC EQ
U
LEFT RIGHT
OO
-15 +15
U
LOW
MID
400Hz
PAN
L
ASSIGN
dB
10
3-4
U
250
12 CHANNEL COMPACT INTEGRATED LIVE SOUND MIXER
DIGITAL STEREO EFFECTS PROCESSOR
EFX 2 (INT) RETURN MASTERS
HI
12k
-15 +15
9-10
MUTE
ASSIGN
dB
10
3-4
R
8
MUTE
1-2
5
U
5
15–
125
1
(EXT)
HI
MID
3k
-15 +15
U
LOW
80Hz
PAN
R
7
ASSIGN
dB
10
3-4
5
0
10
63
EFX
+15
U
-15 +15
U
-15 +15
U
8k
-15 +15
PAN
L
MUTE
1-2
5
U
18-INCH POWERED SOUND REINFORCEMENT SUBWOOFER
B
15+
5
10
–15
2
+15
CLIP
HI
12k
U
LOW
80Hz
-15 +15
R
6
ASSIGN
dB
10
3-4
U
B
INPUTS
10
5
0
+15
U
U
OO
2
EQ
HI
MID
3k
1.5k FREQ
150
8k
U
LOW
80Hz
PAN
L
MUTE
ASSIGN
dB
10
3-4
R
5
MUTE
1-2
5
U
B
FULL RANGE
PHONES
10
1
OO
1
EFX
(INT)
+15
U
-15 +15
U
MID
-15 +15
600
1.5k FREQ
150
8k
-15 +15
PAN
R
4
ASSIGN
dB
10
3-4
U
75Hz
SUB OUT
SUB OUT
+15
AUX
U
OO
2
EFX
(EXT)
OO
HI
12k
-15 +15
U
MID
U
LOW
80Hz
-15 +15
PAN
L
MUTE
ASSIGN
dB
10
3-4
R
3
MUTE
ASSIGN
O
R
2
MUTE
5
U
EFX
R
HIGH PASS
A
A
S
AUX SEND
1
+15
+15
U
2
EQ
TIME
L
dB
10
4
FOOT
SWITCH
MASTER SEND
AUX
+15
U
U
OO
EFX
(INT)
+15
U
0
REVISION
3
2
OUTPUTS
A
+6dB
NORMAL
INVERT
+20
U
OO
PRE FADER
1
+15
U
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE
SERIAL NUMBER
SIGNAL POWER
POL ARITY
GAIN
OO
2
EFX
(EXT)
OO
EQ
AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIRPARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
POWER
OL
- 6dB
11/12
1
+15
U
OO
2
-15 +15
600
1.5k FREQ
150
8k
U
LOW
80Hz
-15 +15
PAN
-20
AUX
+15
U
1
EFX
(INT)
+15
U
-15 +15
U
-15 +15
600
1.5k FREQ
150
8k
U
-15 +15
PAN
HI
12k
+20
U
OO
PRE FADER
EFX
(EXT)
OO
EQ
MID
U
GAIN
OO
2
+15
+15
U
2
-15 +15
U
MID
-15 +15
600
1.5k FREQ
150
LOW
80Hz
-15 +15
HI
12k
-15 +15
U
-15 +15
600
LG.
150
1.5k FREQ
MD.
LG. 100
8k
MD.
U
SM.
8k
U
LOW
80Hz
PAN
M
HI
12k
MID
-20
1
+15
U
U
OO
EFX
+15
U
R
1
2
From Mixer
Left Output
ZERO
AUX
U
OO
1
+15
U
(INT)
OO
EQ
9/10
U
PRE FADER
EFX
(EXT)
OO
2
+15
U
8
GAIN
OO
+15
U
1
EFX
(INT)
OO
R
1
L
R
LOW CUT
100 Hz
+15
U
2
OO
PRE FADER
EFX
(EXT)
+15
U
2
EQ
L
R
(MONO)
9
LEVEL
5
+50
-15dB +30dB
1
OO
2
+15
U
OO
EFX
(INT)
+15
U
IC GAIN
AUX
U
1
+15
U
1
+15
U
U
-15 +15
U
1.5k FREQ
150
8k
U
-15 +15
M
HI
12k
MID
ZERO
GAIN
LOW CUT
100 Hz
AUX
U
OO
PRE FADER
EFX
(EXT)
OO
EQ
7
U
IC GAIN
LEVEL
5
+50
-15dB +30dB
GAIN
LOW CUT
100 Hz
OO
2
+15
U
OO
2
+15
U
-15 +15
U
-15 +15
600
1.5k FREQ
150
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
M
HI
12k
MID
ZERO
LEVEL
5
+50
-15dB +30dB
1
+15
U
1
EFX
(INT)
OO
EQ
6
U
IC GAIN
AUX
U
OO
PRE FADER
EFX
(EXT)
+15
U
2
+15
U
-15 +15
U
MID
ZERO
GAIN
LOW CUT
100 Hz
OO
2
+15
U
OO
EFX
(INT)
OO
LEVEL
5
+50
-15dB +30dB
AUX
+15
U
1
+15
U
2
EQ
5
U
IC GAIN
1
OO
PRE FADER
EFX
(EXT)
OO
EFX
+15
U
-15 +15
U
ZERO
OO
+15
U
1
+15
U
(INT)
OO
U
+15
U
2
OO
PRE FADER
EFX
(EXT)
OO
2
EQ
GAIN
1
OO
+15
U
1
EFX
(INT)
+15
LOW CUT
100 Hz
AUX
U
+15
U
2
OO
PRE FADER
EFX
(EXT)
+15
U
U
4
U
IC GAIN
LEVEL
5
+50
-15dB +30dB
GAIN
1
OO
+15
U
OO
LOW CUT
100 Hz
AUX
U
+15
U
2
OO
PRE FADER
OO
LEVEL
5
+50
-15dB +30dB
GAIN
LOW CUT
100 Hz
AUX
1
OO
3
U
IC GAIN
ZERO
LEVEL
5
+50
-15dB +30dB
GAIN
LOW CUT
100 Hz
U
2
U
IC GAIN
M
M
M
1
LAMP
12V 0.5A
L
BAL/UNBAL
(MONO)
U
IC GAIN
MAIN OUT
MAIN OUT
L
L
R
2
MAIN INSERT
TAPE
OUTPUT
L
UTILITY OUT
I
Pole Mount
LEVEL
+6dB
POL ARITY
High Pass
Output
Pole Mount
40
50
60
40
50
60
40
50
60
40
50
60
40
50
60
OO
OO
OO
OO
OO
I
O
Mixing Console
(Mackie CFX12mkII shown)
The left and right line-level outputs from a mixer feed the inputs of the Mackie SRM1801 powered
subwoofers. The high pass line-level outputs of the subwoofers feed the inputs of the Mackie SRM450v2
powered loudspeakers, so these reproduce the mid-to-high frequencies in stereo, and the subs provide
the low frequencies in stereo.
6
Daisy-chaining two subwoofers
SRM1801
Subwoofer 2
THERMAL
OL
SIGNAL POWER
LEVEL
- 6dB
SRM1801
Subwoofer 1
Full-Range
Output
OUTPUTS
A
HIGH PASS
B
A
FULL RANGE
B
+6dB
POL ARITY
NORMAL
INVERT
A
INPUTS
Mixing Console
(Mackie 1604-VLZ3 shown)
THERMAL
OL
SIGNAL POWER
LEVEL
- 6dB
OUTPUTS
A
HIGH PASS
B
A
FULL RANGE
B
+6dB
POL ARITY
NORMAL
INVERT
18-INCH POWERED SOUND REINFORCEMENT SUBWOOFER
B
INPUTS
A
18-INCH POWERED SOUND REINFORCEMENT SUBWOOFER
B
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE
AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIRPARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
REVISION
SERIAL NUMBER
From Mixer
Output
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE
AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIRPARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
REVISION
SERIAL NUMBER
POWER
POWER
I
I
O
O
The left and right line-level outputs from a mixer feed the left and right inputs of the first Mackie
SRM1801 powered subwoofer. The inputs are summed in mono to play in the subwoofer, but this does
not affect the full-range or high-pass outputs, which remain fully stereo. The left and right full-range linelevel outputs of this subwoofer feed the left and right inputs of the second Mackie SRM1801 powered
subwoofer. The high-pass outputs or full-range outputs of either subwoofer could feed the other powered
loudspeakers in your system.
A lot of low-end
Straps
Right Main
Powered
Loudspeaker
(Mackie SRM450v2
shown)
Straps
ACTIVE SOUND REINFORCEMENT SYSTEM
ACTIVE SOUND REINFORCEMENT SYSTEM
Left Main
Powered
Loudspeaker
(Mackie SRM450v2
shown)
High-Pass
Outputs
THERMAL
OL
SIGNAL POWER
LEVEL
- 6dB
THERMAL
OUTPUTS
A
HIGH PASS
B
A
FULL RANGE
B
OL
- 6dB
OUTPUTS
A
HIGH PASS
B
A
FULL RANGE
B
+6dB
POL ARITY
NORMAL
INVERT
NORMAL
INVERT
A
SRM1801 Right
Subwoofer 2
SIGNAL POWER
LEVEL
+6dB
POL ARITY
INPUTS
18-INCH POWERED SOUND REINFORCEMENT SUBWOOFER
B
A
INPUTS
18-INCH POWERED SOUND REINFORCEMENT SUBWOOFER
B
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE
AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIRPARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
SERIAL NUMBER
AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIRPARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
REVISION
SERIAL NUMBER
Full-Range
Outputs
POWER
I
O
THERMAL
OL
SIGNAL POWER
LEVEL
- 6dB
OUTPUTS
A
HIGH PASS
B
A
FULL RANGE
B
+6dB
POL ARITY
NORMAL
INVERT
SRM1801 Right
Subwoofer 1
A
INPUTS
18-INCH POWERED SOUND REINFORCEMENT SUBWOOFER
B
SRM1801 Left
Subwoofer 2
From Mixer
Right Output
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
PREMIUM ANALOG MIXER w/ PERKINS EQ & FIREWIRE
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
EQ
REVISION
POWER
I
O
From Mixer
Left Output
THERMAL
OL
SIGNAL POWER
LEVEL
- 6dB
OUTPUTS
A
HIGH PASS
B
A
FULL RANGE
B
+6dB
POL ARITY
NORMAL
INVERT
A
INPUTS
18-INCH POWERED SOUND REINFORCEMENT SUBWOOFER
B
SRM1801 Left
Subwoofer 1
EQ
SOLO
SOLO
SOLO
SOLO
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE
AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIRPARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
SERIAL NUMBER
AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIRPARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
REVISION
SERIAL NUMBER
SOLO
REVISION
SOLO
POWER
POWER
I
I
O
O
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
SOLO
SOLO
SOLO
SOLO
SOLO
SOLO
SOLO
SOLO
SOLO
SOLO
SOLO
SOLO
SOLO
SOLO
SOLO
SOLO
Mixing Console
(Mackie Onyx 1640i shown)
The left and right line-level outputs from a mixer feed the inputs of a pair of Mackie SRM1801 powered
subwoofers. Their respective full-range outputs feed the inputs of another pair of Mackie SRM1801
powered subwoofers. The high-pass outputs from the second set of subwoofers then feed the inputs of a
pair of Mackie SRM450v2 powered loudspeakers.
NOTE: It is highly recommended that you use straps to secure your loudspeakers for stacked scenarios
such as this one. Be sure to loop a strap through each handle going down each side of the cabinet setup,
7
as shown above.
Mackie SRM1801 Features
8 9 10 11
THERMAL
7
6
OL
SIGNAL POWER
LEVEL
- 6dB
OUTPUTS
A
HIGH PASS
B
A
FULL RANGE
B
5
+6dB
POL ARITY
4
NORMAL
INVERT
A
INPUTS
18-INCH POWERED SOUND REINFORCEMENT SUBWOOFER
B
3
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE
AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
SERIAL NUMBER
REVISION
POWER
2
I
O
1
The rear panel is where you connect AC power
and your signals to and from the subwoofer. You may
also adjust the level and polarity to match the other
loudspeakers in your system and account for the
subwoofer’s location and your room’s environment.
1. IEC AC Receptacle
Connect the detachable line cord to this IEC socket
securely, and plug the other end into an AC outlet.
Make sure the AC power is matched to the AC power
indicated on the rear panel above the IEC socket.
2. POWER
Press up on this switch to turn the SRM1801
subwoofer on. The power LED [11] above the LEVEL
knob [7] illuminates when the POWER switch is on and
AC power is available at the linecord socket.
Press the bottom of this switch to put the subwoofer
into standby mode. It will not function, but the circuits
are still live. To remove AC power, either turn off the
AC mains supply, or unplug the power cord from the
subwoofer and the AC mains supply.
As a general guide, powered subwoofers should be turned on after the
mixer and other sources, but prior to fullrange speakers. Additionally, they should
also be powered off after the tops, but before the mixer
and other sources. This will reduce the possibility of any
turn-on, or turn-off thumps in your speakers.
8
8
THERMAL
9 10 11
OL
SIGNAL POWER
LEVEL
OUTPUTS
A
HIGH PASS
B
7
5
- 6dB
6
+6dB
POL ARITY
A
FULL RANGE
B
NORMAL
INVERT
4
A
INPUTS
18-INCH POWERED SOUND REINFORC
B
3
3. INPUTS
5. HIGH PASS OUTPUTS
Balanced XLR female connectors are provided for the
left and right inputs. Connect the full-range line-level
signal from the mixer or other signal source to these
input jacks.
Balanced XLR male connectors are provided for the
line-level A and B high-pass outputs. The subwoofer’s
internal active crossover splits the input signals into
two frequency bands. The low frequency range below
125 Hz goes to the internal amplifier that powers the
subwoofer. The frequency range above 125 Hz is sent to
these line-level output jacks.
If you are connecting a single subwoofer output, or
LFE (low-frequency effects) output to the subwoofer,
you may use either the A or B input connector.
CAUTION: NEVER connect the output of
an amplifier directly to the input of the
subwoofer. This could damage the input
circuitry of the active subwoofer.
4. FULL RANGE OUTPUTS
Balanced XLR male connectors are provided for the
line-level A and B full-range outputs. Connect these
outputs to the inputs of another powered subwoofer,
main powered loudspeakers, or to an amplifier powering
passive loudspeakers.
The signal at these outputs is a direct copy of the
input signals. These outputs allow you to daisy-chain
multiple subwoofers, and/or send the full-range signals
to the main loudspeakers.
The level control and polarity switch have no effect
on the full-range outputs. The outputs are separate and
maintain the stereo separation of the input signals.
Connect these outputs to the inputs of your main
powered loudspeakers, or to the inputs of the amplifier
powering the main loudspeakers. In this way, the main
loudspeakers will play the range above 125 Hz. If the
main loudspeakers have good low-frequency response,
then you may decide to use the full-range outputs [4]
instead.
The level control and polarity switch have no effect
on the high-pass outputs. The outputs are separate and
maintain the stereo separation of the input signals.
6. POLARITY
This switch reverses the polarity of the signal going
into the subwoofer amplifier by 180°. It has no effect on
the signal at the line-level outputs.
There is no right or wrong setting for this switch.
Listen to the overall blend of the subwoofer with the
rest of the system and select the switch position that
gives you the best sound for your audience. In fact,
WARNING:
your system may vary when positioned differently and
DE CHOC ELECTRIQUE — NE PAS OUVRIR
inAVIS: RISQUE
alternate
venues. Don’tREVISION
be afraid to experiment with
SERIAL NUMBER
the position of the polarity switch. See page 11 for more
information.
TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE
PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
9
POWER
8
THERMAL
9 10 11
OL
SIGNAL POWER
LEVEL
OUTPUTS
A
HIGH PASS
B
7
5
- 6dB
6
+6dB
POL ARITY
A
FULL RANGE
B
NORMAL
INVERT
4
A
INPUTS
18-INCH POWERED SOUND REINFORC
B
3
7. LEVEL
9. OL LED
The LEVEL control adjusts the overall signal level at
the input to the built-in power amplifier. It ranges from
-6 dB to +6 dB (maximum gain), with unity gain at the
center position (12 o’clock).
The OL (overload) indicator lights when the
amplifier in the SRM1801 is near the clipping point. It
is okay if the OL indicator blinks occasionally, because
this means that the transient peaks are just reaching
the maximum output of the amplifier and you are
getting the most from your SRM1801.
The control has no effect on the level of the highpass outputs [5] or the full-range outputs [4].
8. THERMAL LED
The SRM1801 is equipped with a thermal protection
circuit that monitors the internal temperature of the
amplifiers and heatsink. If the temperature exceeds a
safe operating level, this indicator lights and the input
signal is muted to allow the amplifiers to cool. When
the temperature cools to a safe level once again, the
thermal protection circuit deactivates, the Thermal
LED turns off and the SRM1801 returns to normal
operation.
When the SRM1801 is in thermal protect mode, the
power LED [11] will remain lit, indicating that the unit
is still powered on despite the lack of output.
Activation of the thermal protection circuit
is an indication that you should take steps
to avoid continued thermal problems. See
“Thermal Protection” on page 12.
If the OL indicator is blinking frequently or lighting
continuously, turn down the LEVEL control [7] on the
SRM1801 or turn down the signal at it source (e.g., the mixing console) until the OL indicator blinks
occasionally or not at all.
10. SIGNAL LED
This LED illuminates green whenever there is a
signal present at the main input connector. It senses the
signal just after the Level control, so adjustments to the
level control will affect the signal indicator.
11. POWER LED
This LED illuminates when the power switch [2] is
turned on and the linecord is connected to an active AC
Mains supply.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE
AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
SERIAL NUMBER
10
POWER
REVISION
The Ins and Outs of Polarity
Mackie’s SRM1801 subwoofer includes a switch that
allows you to quickly invert the polarity of the
subwoofer’s output relative to the input signal it is receiving from the mixer or other sound source. But
what exactly does that mean? A subwoofer works by literally pumping air as the woofer cone moves in and
out with respect to the cabinet in which it is housed. It
does so according to the low-frequency portion of the
signal it receives from the sound source.
The woofer cone is simply following the waveform
as seen in the sine wave in Figure 1. As the sine wave
rises, the woofer cone pushes out. Likewise, as the sine
wave falls, the woofer cone pulls into the cabinet. A
musical signal is much more complex, of course, but the
same principle applies. Movement of the woofer cone
causes air pressure changes that we perceive as sound.
When the Polarity Invert switch [6] is engaged, the
original waveform is simply reversed 180º (see Figure
2). Again, the subwoofer cone follows the waveform.
However, this time the woofer cone starts by pulling into
the cabinet followed by the woofer cone pushing out. If
you have ever experimented with a subwoofer polarity
switch, you may not have noticed any changes to the
sound regardless of its position, especially if you are
listening to just the subwoofer. This is normal, as our
ears perceive them both as the same.
The polarity invert switch comes into play when the
SRM1801 subwoofer is paired with a loudspeaker. Ideally, the woofer cones of the subwoofer and
full-range loudspeaker would work together by pushing and pulling in unison. SRM1801 subwoofers are
designed to be used in a broad range of applications,
and with a wide variety of full-range loudspeakers. The
flexibility provided by the polarity switch is necessary
to ensure that you are receiving the best possible sound
from your system, regardless of your setup.
Listed below are some recommended configurations
for pairing a Mackie SRM1801 subwoofer (using the
High-Pass output) with a Mackie full-range loudspeaker. These settings are a good start, but be sure
to experiment to find the best sound for your venue. The
loudspeakers may be stacked, pole-mounted, or flown.
• SRM450v2 full-range loudspeakers - Disengage the Polarity Invert switch on the SRM1801.
• TH-15A full-range loudspeakers - Engage the Polarity Invert switch on the SRM1801.
In alternate setups where the full-range loudspeakers
are not co-located with the subwoofers or are not connected to the SRM1801 subwoofer’s High-Pass
outputs, you will need to experiment with the Polarity
Invert switch to determine which setting gives you the
desired bass response for your application.
<--Time-->
Amplitude
<--Time-->
Amplitude
Figure 1
Figure 2
11
Protection Circuits
Placement
There are several protection mechanisms designed
into the SRM1801 to safeguard the subwoofers and
amplifiers from inadvertent damage.
The SRM1801 subwoofer is designed to sit on the
floor or stage. It is not designed to be pole-mounted or
suspended.
CAUTION: The protection circuits are
designed to protect the subwoofers under
reasonable and sensible conditions. Should
you choose to ignore the warning signs
(i.e., frequent OL LED indications, excessive distortion),
you can still damage the speakers in the SRM1801 by
overdriving them past the point of amplifier clipping. Such
damage is beyond the scope of the warranty.
When pole-mounting loudspeakers, be sure that the
SRM1801 subwoofers are stabilized and secured from falling over or being accidentally pushed over. For
stacked scenarios, it is highly suggested that straps are
utilized. Failure to follow these precautions may result
in damage to the equipment, personal injury, or death.
Limiting
WARNING: The cabinet has no rigging
points and is not suitable for rigging.
NEVER attempt to suspend the SRM1801
by its handles.
The driver has its own compression circuit, which
helps protect it from damaging transient peaks. The
compressor is designed to be transparent and is not
noticeable under normal operating conditions.
As with any powered components, protect them from
moisture and extreme cold and follow the other Care
and Maintenance suggestions below.
Overexcursion Protection
Care and Maintenance
A 24 dB/octave high-pass filter at 40 Hz just prior
to the low-frequency amplifier prevents very low
frequencies from being amplified. Excessive lowfrequency energy below 40 Hz can damage the woofer by
causing it to “bottom out,” also known as overexcursion,
which is equivalent to a mechanical form of clipping.
Thermal Protection
All amplifiers produce heat. The SRM1801 is
designed to be efficient both electrically and thermally.
The amplifier module is mounted on a large
heatsink, which is cooled by convection where cool air
is drawn over the rear panel, carrying the heat away.
In order for this convection cooling to work efficiently,
it is important to provide adequate airspace behind
the subwoofer. When you position the SRM1801, we
recommend leaving at least six inches of air space
behind it.
If for some reason the internal temperature gets too
hot, a built-in thermal switch activates and turns down
the amplifier. When the amplifier cools down to a safe temperature, the thermal switch resets and normal
operation resumes. If the internal temperature again
gets too hot, the output level reduction process repeats.
Should this happen, make sure that airflow to the rear
of the cabinet is not restricted.
12
Your Mackie subwoofers will provide many years of
reliable service if you follow these guidelines:
• Avoid exposing the subwoofers to moisture. If
they are set up outdoors, be sure they are under
cover if rain is expected.
• Avoid exposure to extreme cold (below freezing temperatures). If you must operate
the subwoofers in a cold environment, warm
up the voice coils slowly by sending a low-level
signal through them for about 15 minutes prior
to high-power operation.
• Use a dry cloth to clean the cabinets. Only do
this when the power is turned off. Avoid getting
moisture into any of the openings of the cabinet, particularly where the driver is located.
Appendix A: Service Information
If you think your Mackie product has a problem,
please check out the following troubleshooting tips and
do your best to confirm the problem. Visit the Support
section of our website (www.mackie.com/support) to
get some ideas or contact our technical support heroes.
You may find the answer to the problem without having
to send your Mackie product away.
Troubleshooting
No Power
• Our favorite question: Is it plugged in?
• Make sure the line cord is securely seated in the line cord socket and plugged all the way into the AC outlet.
• Make sure the AC outlet is live (check with a tester or lamp).
• Is the POWER switch in the ON position?
Bad Sound
• Is the input connector plugged completely into the input jack?
•
Is something connected to an output jack? Try unplugging it. If the sound improves, whatever was plugged into the output jack may have affected the signal.
• Is it loud and distorted? Reduce the signal level at the mixer.
• Is the power LED on the rear panel illuminated? If not, make sure the AC outlet is live. If so, refer to “No Sound” below.
• If possible, listen to the signal source with headphones plugged into the preamp stage. If it sounds bad there, it’s not the subwoofer.
• If the power LEDs are not illuminated, and you are certain that the AC outlet is live, it is possible the fuse has blown.
• Too much bass or not enough bass? Move around the room and see if the bass response changes. It’s possible your listening position coincides with a room mode where the low frequencies either become exaggerated or nulled. If so, try using an alternate polarity switch position, moving the subwoofers to a different location in the room, or moving your listening position.
No Sound
• Is the power LED on the rear panel illuminated?
• Is the LEVEL control turned up?
•
Is the signal source turned up? Make sure the signal level from the mixing console (or whatever device immediately precedes the subwoofer) is high enough to produce sound.
•
If it’s a stereo pair, try switching them around. For example, if a left subwoofer is presumed dead, switch the left and right cords at the subwoofers. If the problem switches sides, it’s not the SRM1801. It could be a bad cable, or no signal from the mixer.
13
Noise/Hum
•
Check the signal cable between the mixer and the subwoofer. Make sure all connections are secure. These problems usually produce crackling noises or hum.
•
If you are using two or more SRM1801 powered subwoofers, try plugging them all into the same AC outlet panel or outlet strip. The purpose for this is to connect them all to the same earth ground point and reduce the possibility of creating a ground loop.
• If connecting an unbalanced output to the SRM1801 balanced input, make sure the shield is connected to the unbalanced ground and to pin 1 of the XLR.
Repair
For warranty service, refer to the warranty
information on page 18.
Non-warranty service for Mackie products is
available at a factory-authorized service center. To
locate your nearest service center, call our Tech
Support department at 1-800-898-3211, Monday-Friday,
during normal business hours, Pacific Time, to explain
the problem. Tech Support will tell you where the
nearest factory-authorized service center is located in
your area.
14
Appendix B:
Connections
XLR Connectors
The SRM1801 has two female XLR input jacks that
accept balanced line-level signals. When connecting
a balanced signal, be sure it’s wired per AES (Audio Engineering Society) standards:
Balanced XLR Connectors
There is a limit to how many you can daisy-chain together. A general rule is
to maintain a load impedance ten times
or more than the source impedance to
prevent excessive loading on the source. For example, if
your mixer has an output impedance of 120 ohms, then
you can daisy chain up to nine SRM1801’s. This is a load
of 1222 ohms (SRM1801 input impedance=11 kohms;
9 of these in parallel=1222 ohms). Since microphones
typically have a higher output impedance, you should
limit daisy-chaining from a mic source to two SRM1801’s
(assuming that loudspeakers are also connected to the
subwoofers).
XLR
Pin 1 – Shield (Ground)
Pin 2 – Hot (+)
Pin 3 – Cold (–)
You should use high-quality, shielded cable to
connect the signal source to the INPUT jacks on the SRM1801.
• High quality microphone cables work well.
• Foil shielded cables are commonly used for audio wiring.
•
The better the shield, the better the immunity from externally induced noise (like EMI and RFI). Route the cable away from AC power cords and outlets. These are common sources for hum in an audio signal. You can purchase quality cables from your Mackie dealer.
There are also two male XLR connectors on the
SRM1801 labeled FULL RANGE and two labled HIGH
PASS. These are also wired according to the AES standards listed above.
The FULL RANGE connectors allow you to connect several SRM1801’s. Simply plug the signal source (e.g., mixer output) into the SRM1801 input jack, and
patch that subwoofer’s full range jack to the next subwoofer’s input jack, and so on, daisy-chaining multiple subwoofers.
15
Appendix C: SRM1801 Specifications
Acoustic Performance
AC Power Requirements
Frequency Range (–10 dB): 35 Hz – 150 Hz
US: 100-120 VAC, 50-60 Hz
Frequency Response (–3 dB): 50 Hz – 115 Hz
Europe: 220-240 VAC, 50-60 Hz
Max peak SPL (calculated) : 129 dB
Power Consumption:
160 watts @ 1/4 power
Max peak SPL (measured) : 124 dB
AC Connector: 3-pin IEC 250 VAC, 15 A male
1
2
Transducer
Diameter:
18 in / 457 mm
Construction Features
Voice coil diameter:
3 in / 76 mm
Basic Design:Trapezoidal
Diaphragm material:
Paper
Material:Void-free plywood
Magnet material:Ferrite
Finish:
Textured black catalyzed polyurethane paint
Handles:
One on each side
Grille:Perforated metal
Power Amplifier
Rated Power:
500 watts rms
1000 watts peak
THD:<0.1%
Physical Properties
Design:Class D
Height: 24.1 in / 612 mm
Cooling:Convection
Front Width: 20.2 in / 513 mm
Rear Width: 15.1 in / 383 mm
Depth: 25.3 in / 643 mm
Weight: 73 lb / 33.1 kg
Input/Output
Input Type: Female XLR Balanced differential (stereo left/right)
Input Impedance: 20 k balanced
Full Range Output:
Male XLR Balanced
(parallel with input)
High Pass Output:
Male XLR Balanced
Level Control:
–6 dB to +6 dB
Electronic Crossover
Crossover Type: 24 dB/oct. Linkwitz-
Riley
Crossover Frequency: 125 Hz
Protection Features
Mounting Method:
The SRM1801 subwoofer is designed to sit on the floor or
stage. It is NOT designed to be pole-mounted or suspended. The
cabinet has no rigging points and is not suitable for rigging.
Never attempt to suspend the SRM1801 by its handles.
LOUD Technologies Inc. is always striving to improve our products
by incorporating new and improved materials, components, and
manufacturing methods. Therefore, we reserve the right to change
these specifications at any time without notice.
“Mackie,” and the “Running Man” are registered trademarks of LOUD
Technologies Inc. All other brand names mentioned are trademarks
or registered trademarks of their respective holders, and are hereby
acknowledged.
©2013 LOUD Technologies Inc. All Rights Reserved.
Over-excursion Protection:
40 Hz 24 dB/oct. Butterworth High Pass Filter
Thermal Protection:
Amplifier mute, auto reset
Driver Protection:
Peak/RMS Limiter
Display LEDs:
Thermal, OL, Signal, Power
1 Calculated from peak driver sensitivity and amplifier power, half space.
2 Measured with swept sine at 1 W within operating range, scaled for max power, half space.
16
SRM1801 Dimensions
15.1 in /
383 mm
WEIGHT
73 lb
33.1 kg
25.3 in /
643 mm
THERMAL
OL
SIGNAL POWER
LEVEL
OUTPUTS
A
HIGH PASS
B
A
FULL RANGE
B
U
-6dB
+6dB
POL ARITY
NORMAL
INVERT
A
INPUTS
18-INCH POWERED SOUND REINFORCEMENT SUBWOOFER
B
24.1 in /
612 mm
POWER
I
O
20.2 in / 513 mm
SRM1801 Frequency Response
+0
+0
Normalized to 0 dB SPL
1/3 Octave Response
Normalized
0 dB SPL
1/3 Octave to
Response
+10
+10
–10
-10
–20
-20
–30
-30
–40
-40
20
20
50
50
100
100
Frequency
(Hz)
Frequency (Hz)
200
200
400
400
17
Mackie Limited Warranty
Please keep your sales receipt in a safe place.
This Limited Product Warranty (“Product Warranty”) is provided by LOUD Technologies Inc. (“LOUD”)
and is applicable to products purchased in the United States or Canada through a LOUD-authorized
reseller or dealer. The Product Warranty will not extend to anyone other than the original purchaser of
the product (hereinafter, “Customer,” “you” or “your”).
For products purchased outside the U.S. or Canada, please visit www.mackie.com/warranty to find
contact information for your local distributor, and information on any warranty coverage provided by the
distributor in your local market.
LOUD warrants to Customer that the product will be free from defects in materials and workmanship
under normal use during the Warranty Period. If the product fails to conform to the warranty then LOUD
or its authorized service representative will at its option, either repair or replace any such nonconforming
product, provided that Customer gives notice of the noncompliance within the Warranty Period to the
Company at: www.mackie.com/support or by calling LOUD technical support at 1.800.898.3211 (tollfree in the U.S. and Canada) during normal business hours Pacific Time, excluding weekends or LOUD
holidays. Please retain the original dated sales receipt as evidence of the date of purchase. You will need it
to obtain any warranty service.
For full terms and conditions, as well as the specific duration of the Warranty for this product, please visit
www.mackie.com/warranty.
The Product Warranty, together with your invoice or receipt, and the terms and conditions located
at www.mackie.com/warranty constitutes the entire agreement, and supersedes any and all prior
agreements between LOUD and Customer related to the subject matter hereof. No amendment,
modification or waiver of any of the provisions of this Product Warranty will be valid unless set forth in a
written instrument signed by the party to be bound thereby.
Need help with your subwoofer?
• Visit www.mackie.com and click Support to find: FAQs, manuals, addendums, and other documents.
• Email us at: [email protected].
• Telephone 1-800-898-3211 to speak with one of our splendid technical support chaps (Monday
through Friday, normal business hours, Pacific Time).
18
16220 Wood-Red Road NE • Woodinville, WA 98072 • USA
United States and Canada: 800.898.3211
Europe, Asia, Central and South America: 425.487.4333
Middle East and Africa: 31.20.654.4000
Fax: 425.487.4337 • www.mackie.com
E-mail: [email protected]