Mackie SRM1801 Appendix C: SRM1801 Specifications

Appendix C: SRM1801 Specifications

Acoustic Performance

Frequency Range (–10 dB):	35 Hz – 150 Hz
Frequency Response (–3 dB):	50 Hz – 115 Hz
Max peak SPL (calculated)1:	129 dB
Max peak SPL (measured)2:	124 dB

Transducer

Diameter:	18 in / 457 mm
Voice coil diameter:	3 in / 76 mm
Diaphragm material:	Paper
Magnet material:	Ferrite

Power Amplifier

Rated Power:	500 watts rms
	1000 watts peak
THD:	<0.1%
Design:	Class D
Cooling:	Convection

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

AC Power Requirements

US:	100-120 VAC, 50-60 Hz
	Fuse: T 6.3A H 250V
Europe:	220-240 VAC, 50-60 Hz
	Fuse: T 3.15A H 250V
Power Consumption:	160 watts @ 1/4 power
AC Connector:	3-pin IEC 250 VAC,
	15 A male

Construction Features

Basic Design:	Trapezoidal
Material:	Void-free plywood
Finish:	Textured black catalyzed
	polyurethane paint
Handles:	One on each side
Grille:	Perforated metal

Physical Properties

Height:	24.1 in / 612 mm
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

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.

Electronic Crossover

Crossover Type:	24 dB/oct.
	Linkwitz-Riley
Crossover Frequency:	125 Hz

Protection Features

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

1Calculated from peak driver sensitivity and amplifier power, half space.

2Measured with swept sine at 1 W within operating range, scaled for max power, half space.

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.