JL Audio JD400/4– CLASS D Full Range 400W Amplifier

JL Audio JD400/4– CLASS D Full Range 400W Amplifier

Utilizing our exclusive NexD™ high-speed switching technologies, the JD400/4 amplifier is engineered to deliver loads of clean power, with excellent efficiency and low distortion.

Description

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.

The JD400/4’s controls can be found on the input panel of the amplifier, with all speaker and power connections located along the opposite end of the extruded aluminum chassis. Signal processing features include high or low-pass 12 dB / octave filters (defeatable) for each channel pair, with continuously variable frequency selection from 50-500 Hz, and dual-range, differential-balanced inputs capable of accepting line-level or speaker-level signals. Automatic turn-on capability (via signal sensing or DC-offset sensing) is standard equipment.

Onboard LED-clipping indicators are also included surrounding each input sensitivity control. This convenient feature lets you set your amplifier’s input sensitivity, quickly and accurately, without special equipment. You will also find a set of buffered, pass-through preamp outputs on-board, so you can pass signals to another amplifier.

Features

• Frequency response 12Hz – 22kHz (+0, -1dB)
• Signal-to-noise ratio, referred to highest rated power > 104 dB below rated power (A-weighted, noise bandwidth 20 Hz to 20 kHz)
• Signal to noise ratio, referred to 1 W > 84 dB (A-weighted, noise bandwidth 20 Hz – 20 kHz)
• Damping factor @ 4 Ω >150 / 50 Hz
• Damping factor at 2 Ω >75 / 50 Hz
• THD+N at rated power <1% at 2 Ω per channel. Input voltage range at RCA inputs
• Switchable from 200 mV – 2 V RMS (low) to 800 mV – 8 V ​​RMS (high)
• Min.Copper Power / Ground Wire Gauge Wire 4 AWG
• Fuse rating 40 A (AFS, AGU or MaxiFuse™)
  

Rated continuous power (RMS) at 14.4 V

• @ 4Ω 75W RMS x 4
• @ 2Ω 100W RMS x 4
• Bridged @ 4 Ω 200 W RMS x 2

Rated continuous power (RMS) at 12.5 V

• @ 4Ω 60W RMS x 4
• @ 2Ω 90W RMS x 4
• Bridged @ 4 Ω 180 W RMS x 2

Dimensions

• Height (H) 2.10 in / 53 mm
• Width (L) 9.50 in / 242 mm
• Depth (D) 7.50 in / 190 mm