JL Audio XD400/4v2 Class D 4 Channel Speaker/ Subwoofer Amplifier

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.

Some might just see a small amplifier... But, for those who appreciate great audio, XD's reveal something huge.

• 75W RMS x 4 @ 4 ohms
• 100W RMS x 2 @ 4 ohms
• 200W RMS Bridges @ 4 ohms
• NexD⢠Ultra-High Speed Class D
• 217 mm x 180 mm x 52 mm

Connections 

• Inputs: Two Stereo Pairs
• Speaker output connections:     Accept up to 12 AWG wire
• +12V and Ground connections:     Accept up to 4 AWG wire

On-board Crossover

• State-variable
• 12dB/octave Butterworth with continuously variable cutoff frequency selection from 50-500 Hz
• Configurable as Low-Pass or High-Pass
• Defeatable

Power Output

• Rated Power 14.4 V Stereo: 75W RMS x 4 @ 4 ohms / 100W RMS x 4 @ 2 ohms
• Rated Power 14.4 V Bridged: 150W RMS x 2 @ 8 ohms / 200W RMS x 2 @ 4 ohms
• Rated Power 12.5 V Stereo: 60W RMS x 4 @ 4 ohms / 90W RMS x 4 @ 2 ohms
• Rated Power 12.5 V Bridged: 120W RMS x 2 @ 8 ohms / 180W RMS x 2 @ 4 ohms

Specification

• THD at Rated Power:     1% THD+Noise (20Hz - 20 kHz)
• S/N Ratio: >104 dB referred to rated power (A-weighted, 20 Hz-20 kHz noise bandwidth)
• S/N Ratio: >84 dB referred to 1W (A-weighted, 20 Hz-20 kHz noise bandwidth)
• Frequency Response:     12 Hz - 22 kHz (+0, -1dB)
• Damping Factor: >150 @ 4 ohms per ch./ 50 Hz
• Damping Factor: >75 @ 2 ohms per ch. / 50 Hz
• Input Range:     100mV - 4V RMS
• Dimensions (L x W x H): 8.52 in. x 7.09 in. x 2.05 in. (Width Measurement Includes Plugs)
• Dimensions (L x W x H): 217 mm x 180 mm x 52 mm (Width Measurement Includes Plugs)

• 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