Description
JL Audio XD400/4v2
4-Channel Class D 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 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™) |
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 |
