JL Audio HD900/5 5 Channel Class D Wide-Range Amplifier, 900W 98223

Thanks to its ability to act as a "one-box solution", the HD900/5 is ideal for installations where space is at a premium and sound quality is the paramount goal.

While extremely compact, this amazing amplifier will comfortably drive a complete high-performance car audio system: that is, four satellite speaker systems and a subwoofer system... with a very serious 900 watts of power!

Using our Single Cycle Control switching design and R.I.P.S. technology, the HD900/5 delivers 100 W x 4 to its four main channels, plus a very meaty 500 W to its subwoofer channel. Thanks to R.I.P.S., high power can be delivered over a wide range of load impedances, while the tight power supply regulation keeps distortion down, maximizing sound quality. From a pure sound quality perspective, we invite you to compare the real-world, in-car performance of this amplifier to any other amplifier on the market, of any type, at any price.

This amplifier features a brushed aluminum finish with black powder-coated cast alloy heat sinks and bottom panel. A black powder-coated, gasketed cover is also provided to protect the controls.

Rated Continuous (RMS) Power @ 14.4 V

Main Channels @ 4 Ω	100 W RMS x 4
Main Channels @ 3 Ω	75 W RMS x 4
Main Channels @ 2 Ω	75 W RMS x 4
Main Channels @ 1.5 Ω	75 W RMS x 4
Main Channels - Bridged @ 8 Ω	200 W RMS x 2
Main Channels - Bridged @ 4 Ω	150 W RMS x 2
Subwoofer Channel @ 4 Ω	500 W RMS x 1
Subwoofer Channel @ 3 Ω	500 W RMS x 1
Subwoofer Channel @ 2 Ω	500 W RMS x 1
Subwoofer Channel @ 1.5 Ω	500 W RMS x 1

 

General Specifications

Frequency Response (Main Channels)	12 Hz - 28 kHz (+0, -1dB)
Frequency Response (Subwoofer Channel)	12 Hz - 10 kHz (+0, -1dB)
S/N Ratio, referred to highest rated power (Main Channels)	>108.5 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
S/N Ratio, referred to 1 W (Main Channels)	>88.2 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
Damping Factor @ 4 Ω	>400 / 50 Hz
Damping Factor @ 2 Ω	>200 / 50 Hz
THD+N @ Rated Power (Main Channels)	<0.03% @ 4 Ω
THD+N @ Rated Power (Subwoofer Channel)	<0.05% @ 4 Ω
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	Accepts up to 4 AWG wire
Fuse Rating	60 A (AFS, AGU or MaxiFuse™)

 

Signal Processing

Filter Mode(s): Channels 1 & 2 (front)	High-Pass only
Filter Slope(s): Channels 1 & 2 (front)	12/24 dB/octave
Filter Frequency Range: Channels 1 & 2 (front)	50 Hz - 500 Hz
Filter Mode(s): Channels 3 & 4 (rear)	High-Pass only
Filter Slope(s): Channels 3 & 4 (rear)	12/24 dB/octave
Filter Frequency Range: Channels 3 & 4	50 Hz - 500 Hz
Filter Mode(s): Subwoofer Channel	Low-Pass only
Filter Slope(s): Subwoofer Channel	12/24 dB/octave
Filter Frequency Range: Subwoofer Channel	50 Hz - 500 Hz
Detented, Calibrated Filter Freq. Potentiometers	Yes
Filter Defeat Function	Yes
Infrasonic Filter: Subwoofer Channel	30 Hz, Defeatable
Remote Level Control	Optional (HD-RLC)
Remote Level Modes	Sub Ch. only
Channel Input Mode Switch	Yes (2/4/6 ch.)
Pass-Through Preamp Output	None
Source Channel Selection for PreOuts	N/A

 

Physical Specifications

Height (H)	1.93 in / 49 mm
Width (W)	10.74 in / 273 mm
Depth (D)	7.85 in / 199 mm
Net Weight	6.85 lb / 3.11 kg