JL Audio HD900/5 – 5-Channel Class D System Car Amplifier (900W)

JL Audio HD900/5 – 5-Channel Class D Car Amplifier

5-Channel Class D System Amplifier, 100 W x 4 + 500 W x 1

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.

Compact, Powerful, Efficient

Combining groundbreaking JL Audio Single Cycle Control™ switching along with Regulated, Intelligent Power Supply (R.I.P.S.™) technologies, these HD monoblock amplifiers deliver world-class, full-range fidelity and ultrapowerful output from a surprisingly small package.

Big Power, Small Size

Small size, minimal heat and lots of power — Class-D amplifier design with innovative JL Audio switching technology applies output correction more than 400,000 times per second to deliver exceptional audio quality with reduced current draw and heat.

Max Power at Any Voltage Or Impedance

In both the 750- and 1200-watt HD monoblock versions, our tightly controlled Regulated, Intelligent Power Supply design maintains full power output from any impedance between 1.5 and 4 ohms per channel and at any supply voltage from 11 to 14.5 volts.

Studio-Grade Signal Processing

Selectable 12-decibel/octave (Butterworth) or steep 24-decibel/octave (Linkwitz-Riley) filters with calibrated potentiometer make it easy to extract optimum performance from your subwoofer.

Advanced Rollback Protection

A proprietary protection circuit monitors the amplifier’s thermal condition, rolling back peak output power until the amplifier cools down to a safe operating temperature.

Flexible Mounting Options

For single or multiple amplifier installations, standard mounting screws with corner caps and lateral mounting feet are provided. An optional stacking kit is also available for mounting one amplifier atop another.

Specifications

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
• Rated Continuous (RMS) Power @ 12.5 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
• Filter Defeat Function
• Infrasonic Filter: Subwoofer Channel 30 Hz, Defeatable
• Remote Level Control Optional (HD-RLC)
• Remote Level Modes Sub Ch. only
• Channel Input Mode Switch (2/4/6 ch.)

In The Box

• HD amplifier
• Power input plug
• Speaker connection plug(s)
• Four mounting feet
• 2.5 mm Allen-wrench
• 4 mm Allen-wrench
• Four machine screws
• JL Audio badge