JL Audio XD400/4v2 4 Ch. Class D Full-Range Car Audio Amplifier, 400 W

This tiny amplifier packs a serious full-range punch, delivering a staggering 100 watts to each of its four channels into 2 ohms (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 XD400/4v2 in combination with our XD600/1 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 XD400/4v2 by itself to power two satellites, plus a subwoofer. With XD's, the possibilities are endless.

The XD400/4v2 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.

The XD400/4v2 also features the v2 Spec feature set, which consists of automatic turn-on capability (via signal sensing or DC-offset sensing), and a dual-range differential-balanced input section able to handle a wide range of input voltage levels. With the addition of an HD-RLC remote level control (sold separately), the amplifier's level can be directly controlled from the driver's seat.

This amplifier features a black powder-coat finish and a gasketed, brushed aluminum cover for the controls.

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 Switchable from 200 mV - 2 V RMS (Low) to 800 mV - 8 V RMS (High)

Min.Copper Power / Ground Wire Gauge 4 AWG wire

Fuse Rating 40 A (AFS, AGU or MaxiFuse™)