M400/4

 

4-Channel Class D Marine Full-Range Amplifier, 100 W x 4 @ 2 Ω / 75 W x 4 @ 4 Ω - 14.4V

 

This tiny amplifier packs a serious full-range punch, delivering a staggering 100 watts to each of its four channels into 2 Ω (14.4V, 1% THD). The breakthrough that makes this much power possible in such a small chassis is our NexD™ ultra-high-speed switching design, which allows for full bandwidth Class D operation with extremely low distortion and outstanding efficiency.

 

Use the M400/4 in combination with our M600/1 monoblock to build a 1000 W amplification system to power four satellites and a subwoofer... and fit the whole thing under a seat. Or, use the M400/4 by itself to power two satellites, plus a subwoofer. With M-Series amplifier, the possibilities are endless.

 

The M400/4 includes a 12 dB / octave filter for each channel bank, which can be configured as a low-pass or high-pass filter and offers continuously variable cutoff frequency selection from 50-500 Hz. With the addition of an HD-RLC remote level control (sold separately), the amplifier's Ch. 1 & 2 level or overall level can be directly controlled from a remote location.

 

This marine amplifier features white and gray powder-coat finishes, a gasketed cover for the controls and stainless steel hardware for durability in the marine environment.

• M400_4_Manual.pdf

Rated Continuous (RMS) Power @ 14.4 V
@ 4 Ω	75 W RMS x 4
@ 2 Ω	100 W RMS x 4
Bridged @ 4Ω	200 W RMS x 2

 

 

Rated Continuous (RMS) Power @ 12.5 V
@ 4 Ω	60 W RMS x 4
@ 2 Ω	90 W RMS x 4
Bridged @ 4Ω	180 W RMS x 2

 

 

General Specifications
Frequency Response	12 Hz - 22 kHz (+0, -1dB)
S/N Ratio, referred to highest rated power	>104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
S/N Ratio, referred to 1 W	>84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
Damping Factor @ 4 Ω	>150 / 50 Hz
Damping Factor @ 2 Ω	>75 / 50 Hz
THD+N @ Rated Power	<1% @ 2 Ω per Ch.
Input Voltage Range @ RCA Inputs	100 mV - 4 V RMS
Min.Copper Power / Ground Wire Gauge	4 AWG wire
Fuse Rating	40 A (AFS, AGU or MaxiFuse™)

 

 

Signal Processing
Filter Mode(s)	Low-Pass or High-Pass
Filter Slope(s)	12 dB/octave
Filter Frequency Range	50 Hz - 500 Hz
Detented, Calibrated Filter Freq. Potentiometers	Yes
Filter Defeat Function	Yes
Remote Level Control	Optional (HD-RLC)
Remote Level Modes	2 or All channels
Channel Input Mode Switch	Yes (2/4 ch.)
Pass-Through Preamp Output	Buffered
Source Channel Selection for PreOuts	Yes

 

 

 

 

Physical Specifications
Height (H)	2.05 in / 52 mm
Width (W)	8.52 in / 216 mm
Depth (D)	7.09 in / 180 mm
Net Weight	4.75 lb / 2.15 kg