JL Audio M400/4: 4 Ch. Class D Full-Range Marine Amplifier, 400 W
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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.
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|
|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™)|
|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|
|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|