JL Audio JD Series 400W 4-Channel Full Range Car Amplifier
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• (1) 4-Channel amplifier
• 2.5mm Hex key
• 3mm Hex key
• (1) Owner's manual
JD Series Amplifier
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.
Excellent Efficiency and Low Distortion
Utilizing JL Audio'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.
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.
NexD™ Switching Technology
For the full-range NexD™ amplifiers and channels we applied a variable, ultra-high speed version of the NexD™ technology (switching at well over 400 kHz). In these designs, a self-oscillating modulator with "feed-forward" sends information about the instantaneous power supply voltage to the modulator, combining this with the input signal to cancel out any distortion due to supply voltage fluctuation. This reduces distortion prior to applying feedback, simplifying the overall feedback loop design.
JL Audio’s Differential-Balanced Inputs are engineered to combat induced cable noise, which is a common problem in car and marine audio installations. This technology allows for the use of conventional RCA cables, while delivering many of the benefits of a true balanced connection and accepting a wide range of input signal levels.
Maximum Power : 400 Watts
Low Frequency Response : 50-500 Hz
High Frequency Response : 50-500 Hz
Number of Channels : 4
Frequency Response : 12-22000 Hz
Built In Crossovers : Yes
RMS Power Output : 100x4 Watts
Amplifier Class : D
Fuse Rating : 40 A
XP750-SE OFFER : Yes
Rated Continuous (RMS) Power @ 14.4 V
@ 4 ohms: 75 W RMS x 4
@ 2 ohms: 100 W RMS x 4
Bridged @ 4ohms: 200 W RMS x 2
Rated Continuous (RMS) Power @ 12.5 V
@ 4 ohms: 60 W RMS x 4
@ 2 ohms: 90 W RMS x 4
Bridged @ 4ohms: 180 W RMS x 2
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 ohms: >150 / 50 Hz
Damping Factor @ 2 ohms: >75 / 50 Hz
THD+N @ Rated Power: <1% @ 2 ohms 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™)
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)
Height (H): 2.10 in / 53 mm
Width (W): 9.50 in / 242 mm
Depth (D): 7.50 in / 180 mm
Authorized Internet Dealer
Warranty: 1 Year Manufacturer warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 1 year from the original date of purchase with proper return authorization.
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