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SRM1850
The SRM1850 18" Powered Subwoofer is “Built-likea-Tank,” delivering 1600W of intense power paired with
a custom high-output woofer for powerful, chest-pounding
low end performance. The professional-grade, internallybraced all-wood enclosure provides tour level roadworthiness and is front ported for maximum low-frequency
extension and punch.
The SRM1850 features stereo XLR inputs, full-range
and high-pass outputs plus a variable digital crossover that
includes presets for the SRM550 and SRM650 loudspeakers.
The Smart Protect™ DSP is also in place to protect
your investment when things get pushed a little too hard.
Get the powerful low end your music demands in a rock
solid subwoofer with our proven performance.
FEATURES:
■ 1600W of intense power paired with a custom
high-output 18" woofer delivers chest-pounding
low end performance
SRM1850
1600W
18" Powered Subwoofer
■ “Built-Like-A-Tank” all-wood, internally-braced cabinet
delivers professional-grade road-worthiness and
near-zero distortion, even at high volume
■ Front ported for maximum low-frequency extension
and punch
■ Stereo XLR inputs plus Stereo XLR full-range and
high-pass outputs
■ Integrated digital crossover with variable control and
presets for the SRM550 and SRM650 loudspeakers
■ Smart Protect
when things get pushed a little too hard
■ Built-in cup for easily pole-mounting full-range
loudspeakers
™
DSP kicks in to protect your investment
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SRM1850
1600W
18" Powered Subwoofer
SRM1850 SUBWOOFER SPECIFICATIONS
Acoustic Performance
Frequency Response (–3 dB) 40 Hz – 120 Hz
Frequency Response (–10 dB) 35 Hz – 150 Hz
Max peak SPL 132 dB
Crossover Point 115 Hz plus alignment delay [SRM550]
115 Hz plus alignment delay [SRM650]
60 Hz – 120 Hz [Variable]
Slope 3rd order HP, 4th order LP
Transducer
Woofer Diameter 18.0 in / 457 mm
Voice Coil Diameter 3.0 in / 76 mm
Subwoofer Diaphragm Material Paper
Magnet Material Ferrite
Power Amplifier
Rated Power 800 watts rms
1600 watts peak
Rated THD < 1%
Cooling Convection
Design Class D
Input / Output
Input Type Female XLR balanced
differential (stereo left / right)
Input Impedance 20 k
10 k
Full Range Outputs Male XLR balanced
(parallel with inputs – mono)
High Pass Outputs Male XLR balanced
Line Input Power
US detachable line cord 90 – 130 VAC, 60 Hz, 200W
EU detachable line cord 190 – 240 VAC, 50 Hz, 200W
AC Connector 3-pin IEC 250 VAC
Power Supply Type Switchmode
Operating Temperature 0 - 40 ˚C
[extended ambient temperature] 32 - 104 ˚F
balanced,
unbalanced
Safety Features
Input Protection Peak and RMS limiting, power supply
and amplifier thermal protection
Display LEDs Defeatable front power ON
(Running Man logo),
Front load power limiter,
High Pass Mode, input signal
Construction Features
Cabinet 18 mm Poplar plywood
Finish High durability black paint
Handles One on each side
Grille Powder-coated 16 gauge steel
Mounting Method
The SRM1850 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 SRM1850 by its handles.
Physical Properties (packaged product)
Height 24.8 in / 630 mm
Depth 29.6 in / 752 mm
Width 28.0 in / 711 mm
Weight 74 lb / 33.6 kg
Physical Properties (product)
Height 22.5 in / 572 mm
Depth 23.9 in / 608 mm
Width 22.2 in / 565 mm
Weight 64 lb / 29 kg
Options
SRM1850 Subwoofer Cover P/N 2036809-24
SPM200 Loudspeaker Pole Mount P/N 2035170-01
Ordering Information
SRM1850 1600W 18" Powered Subwoofer, US
SRM1850 1600W 18" Powered Subwoofer, EU
SRM1850 1600W 18" Powered Subwoofer, AU
SRM1850 1600W 18" Powered Subwoofer, CN
SRM1850 1600W 18" Powered Subwoofer, BZ (120V)
SRM1850 1600W 18" Powered Subwoofer, BZ (230V)
P/N 2035116-00
P/N 2035116-01
P/N 2035116-04
P/N 2035116-05
P/N 2035116-06
P/N 2035116-16
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SRM1850 SUBWOOFER DIMENSIONS
NOTES:
1. SYMBOL INDICATES CENTER OF BALANCE.
2. WEIGHT APPROX. 64 lb [29 kg].
3. SHIPPING WEIGHT APPROX. 74 lb [33.6 kg].
SRM1850
22.2
[565]
1600W
18" Powered Subwoofer
THIRD ANGLE PROJECTION
THE INFORMATION CONTAINED
HEREIN IS PROPRIETARY AND
CONFIDENTIAL PROPERTY OF
LOUD TECHNOLOGIES, INC.
ALL RIGHTS RESERVED
22.2
[565]
UNLESS OTHERWISE SPECIFIED:
ALL DIMENSIONS ARE IN INCHES
DUAL [MM] DIMENSIONS
TOLERANCE IN INCHES
LINEAR ± 0.13 in / ± 3.3 mm
(X.XX) = REF DIMS
NO TOLERANCE IMPLIED
TSC = THEORETICAL SHARP CORNER
DIMENSIONS ACROSS CENTERLINES
TO BE SYMMETRICAL
23.9
[608]
FOR REF ONLY
ANGLES ± 1°
2.4 [60]
4x Feet
2.4
[60]
22.5
[572]
FRONT
3.5
[90]
SIDE
BACK
2.4 [60]
BOTTOM
Pole Cup
16.8
[428]
TOP
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SRM1850 SUBWOOFER REAR PANEL
SRM
550
SRM
650
VAR
SRM1850
SRM
550
SRM
650
VAR
1600W
18" Powered Subwoofer
POWER CONSUMPTION 200W
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Mono
SRM1850 BLOCK DIAGRAM
SRM1850
1600W
18" Powered Subwoofer
USER CONTROLS
DSP
LOGO
SRM650
SRM550
ON / OFF
VARIABLE
LEVEL
LIMIT
FREQ
MODE
High Definition Audio Processing
MAINHIGH PASS
A
B
A
B
AMP
Invert
HIGH PASS OUTPUTS
Normal
Invert
Polarity
DAC
DAC
Smart
Protect
Delay
XOver
LEVEL
DETECT
Level
LIT LOGO
DAC
DAC
AMP STATUS
DAC
XOver
XOver
FULL RANGE OUTPUTS
Stereo
HARDWIRE BUS ANALOG BUS DIGITAL BUS
A B
ADC
ADC
ADC
Limit
Limit
A B
-
+-+
+ A - + B -
INPUTS
A
B
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SRM1850 SUBWOOFER FREQUENCY RESPONSE
SRM1850
1600W
18" Powered Subwoofer
Normalized to 0 dB SPL
+10
+0
-10
-20
-30
20 200 2000 20000
Frequency Response [Hz]
LEGEND
■ SRM550 / SRM650
■ VARIABLE : HIGH
■ VARIABLE : LOW
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” figure are registered trademarks of
LOUD Technologies Inc. All other brands mentioned are trademarks
or registered trademarks of their respective holders, and are hereby
acknowledged.
©2013 LOUD Technologies Inc. All rights reserved.
Electronic files for this product are available at:
www.mackie.com
Specification Sheet SRM1850_SS.PDF
Owner’s Manual SRM1850_OM.PDF
www.mackie.com
16220 Wood-Red Road NE
Woodinville, WA 98072 USA
800-898-3211, Fax 425-487-4337
Part No. SW1000 Rev. A 08/13
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