Utilizing JL's exclusive NexD™ high-speed switching technologies, the JD400/4 amplifier is engineered to deliver loads of clean power, with excellent efficiency and low distortion. This little guy churns out 100 watts of audio from each of its four channels into 2 ohms (14.4V, 1% THD) and is fully bridgeable, so it can be used as a 3-channel amplifier, or as a 2-channel amplifier producing a whopping 200W x 2 into 4 ohms.

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 No
• Filter Defeat Function Yes
• Remote Level Control No
• Remote Level Modes N/A
• Channel Input Mode Switch Yes (2/4 ch.)
• Pass-Through Preamp Output Buffered
• Source Channel Selection for PreOuts No (always 2 Ch)

Physical Specifications

• Height (H) 2.10 in / 53 mm
• Width (W) 9.50 in / 242 mm
• Depth (D) 7.50 in / 180 mm