Open Box, Great - JL Audio HD900/5 | Compact, 900W RMS 5-Channel Class D HD Amp

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Product highlights

• Full-Range RMS: 100W x 4 @ 4 ohm, 75 x 4 @ 3-1.5 ohm
• Subwoofer RMS: 500W x 1 @ 4-1.5 ohm
• R.I.P.S. - Regulated, Intelligent Power Supply
• Single Cycle control - High Fidelity Class D
• Dimensions: 10.74"L x 7.85"W x 1.93"H

Learn more about the LS-hd9005-OBC8

Description

Authorized dealer

Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.

JL Audio HD 5-Channel Class D Amplifier

JL Audio's Flagship Series of amplifiers offer unmatched performance from an ultra-compact chassis. These Class D amplifiers require less power, generate minimal heat and take up far less space than the common amplifier design. HD Series amplifiers reproduce your music with outstanding accuracy, providing high-fidelity sound even under the most demanding conditions, thanks to a number of JL Audio exclusive technologies. Single Cycle Control (U.S. Patent #6,084,450), R.I.P.S System and Advanced Rollback Protection are just a few of the technologies that sets the HD Series apart from the rest of the market, all designed to deliver top-flight audio performance. In addition, behind every HD's removable security cover, you will find studio-grade signal processing with fully variable crossover filters to properly tune in your setup and put all the technology under the hood to good use.

Also included are JL Audio's noise-killing, highly flexible differential-balanced inputs with remote level control capabilities for the subwoofer channel via the HD-RLC remote level control (sold separately).

Advanced Rollback Protection

JL Audio's signature Advanced Thermal Rollback protection system eliminates annoying thermal shutdown events to keep the music playing, even under the most demanding conditions. Should the amplifier reach an unsafe operating temperature, a special circuit rolls back peak power output, without changing gain, until the amplifier cools down to a safe operating temperature. The red "Thermal" LED will light to indicate this condition has been reached. Once the amplifier cools down, the circuit restores full peak power output and the red "Thermal" indicator reverts to its normal state. The operation of Advanced Rollback Protection is inaudible in most cases.

R.I.P.S. System

The HD900/5 employs JL Audio's exclusive Regulated, Intelligent Power Supply (R.I.P.S.) design. This sophisticated power supply allows the amplifier to produce high power over a wide range of speaker impedances. Unlike conventional amplifiers that require a specific impedance to produce optimum power, the R.I.P.S.-equipped HD900/5 gives you the freedom to use a variety of speaker configurations without sacrificing power output or sound quality. The operation of the R.I.P.S. circuitry is entirely automatic and adjusts itself every time the amplifier is turned on according to the lowest impedance present at the speaker load.

Item Condition - Damaged Packaging Only:
A Brand New with Damaged Packaging product is an untouched, unused product, but has damaged original packaging. While the product should be untouched and perfect condition, select packaging materials, such as original protective wrapping, if any, may be missing or damaged. The original manufacturer warranty, if any, still applies, with warranty details included in the listing description or comments. Instructions are included. Product is suitable for presenting as a gift so long as recipient appreciates a great item, not packaging.

HD900/5 Features:

JL Audio HD Series 5-Channel Class D Amplifier
¹Main Channels RMS Power Rating (11V-14.5V):

4 ohm: 100 watts x 4 chan.
3 ohm: 75 watts x 4 chan.
2 ohm: 75 watts x 4 chan.
1.5 ohm: 75 watts x 4 chan.

¹Bridged RMS Power Rating (11V-14.5V):

Bridged, 8 ohm: 200 watts x 2 chan.
Bridged, 6 ohm: 150 watts x 2 chan.
Bridged, 4 ohm: 150 watts x 2 chan.
Bridged, 3 ohm: 150 watts x 2 chan.

¹Subwoofer Channel RMS Power Rating (11V-14.5V):

4 ohm: 500 watts x 1 chan.
3 ohm: 500 watts x 1 chan.
2 ohm: 500 watts x 1 chan.
1.5 ohm: 500 watts x 1 chan.

Class D, switching type with patented Single-Cycle Control technology
Pulse width modulation-regulated switching power supply
LED power (green), protect (red) and low impedance (amber) indicators
Removable Power/Ground and Speaker connectors
Brushed aluminum finish chassis
Compact, stackable chassis design
Black powder-coated, gasketed cover
RealSink Vertical, cast alloy fins effectively dissipate heat
Advanced Thermal Rollback protection system
R.I.P.S. - Regulated, Intelligent Power Supply
Single Cycle Control - high-fidelity, full-range class D

Compares the real PWM waveform and then corrects it in each and every cycle
(over 400,000 times per second)
80% efficiency at 1/2 rated power for the whole amplifier, including its power supply
60% less current draw than a typical Class A/B car amplifier of equal power
Less generated heat, smaller chassis than a similarly powerful Class A/B design.

Noise-killing, highly flexible differential-balanced inputs
Speaker level inputs via RCA (JL Audio XD-CLRAIC2-SW required and sold separately
²Remote bass level input (JL Audio HD-RLC required and sold separately)
Optional stacking equipment for HD amplifiers: JL Audio HD Stack Kit
Selectable input voltage/sensitivity:

Low level: 200mV - 2V
High level: 800mV - 8V

Selectable input modes: 2 Ch. / 4 Ch. / 6 Ch.
Selectable State-variable slope: 12 dB/octave Butterworth or 24 dB/octave Linkwitz-Riley
Cutoff Freq. Range: Continuously variable (All Ch): 50 - 500 Hz
Selectable Infrasonic Filter (Sub Ch): Off / 30 Hz
Total Harmonic Distortion: <0.03% @ 4Ω per main ch., <0.05% @ 4Ω sub ch. (Average at 1kHz)
Signal to Noise Ration: (20 kHz bandwidth)

Referred to Rated Power: 108 dBA
Referred to 1 Watt: 88 dBA

Frequency response: 12 - 28,000 Hz (+0, -1 dB)
Damping Factor Ch. 1-4: >400 @ 4Ω/50 Hz, >200 @ 2Ω/50 Hz
Damping Factor Sub Ch.: >800 @ 4Ω/50 Hz, >400 @ 2Ω/50 Hz
Recommended fuse rating: 60A x 1 (inline, not included)
Dimensions: 10.74"L x 7.85"W x 1.93"H
³4 gauge OFC power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.

Authorized Internet Dealer
2 Year Manufacturer's Warranty

Check out the JL Audio HD900/5 Owner's Manual

Notes from JL Audio:

¹If you connect a load higher than 4Ω nominal per channel in stereo mode (or 8Ω in bridged mode), power will drop by half with every doubling of impedance above 4Ω stereo / 8Ω mono. If you connect a load lower than 1.5Ω nominal per channel in stereo mode (or 3Ω in bridged mode, the amplifier protection circuitry activates a "safe" mode which reduces amplifier power to protect the circuitry from failure (the LED status indicator on the control panel will light up amber to indicate that this has happened). See page 15 for details.
²When connected to the amplifier, the HD-RLC operates as follows. At full counter-clockwise rotation, the audio will mute completely. At full clockwise rotation the level will be the same as if the HD-RLC was not connected at all. In other words, it operates strictly as a level attenuator.
²The RBC-1 Remote Bass Control used with JL Audio Slash, Slash v2, e-Series, A-Series and G-Series amplifiers is NOT compatible with the HD Series amplifiers. If you attempt to connect an RBC-1 to an HD amplifer, the control will not work. You must use the HD-RLC controller.
³We do not recommend the use of "copperclad aluminum wire" or "CCA" wire because this wire is significantly less conductive than pure copper wire. Only use pure copper power wire, such as JL Audio's Premium Power Wire. Tinned copper wire (silver color) is acceptable as the tin-plating is only a very minor component of the wire.
³The HD900/5's "+12 VDC" and "Ground" connections are designed to accept 4 AWG power wire. 4 AWG pure copper wire is the minimum recommended wire size for this amplifier. Use of smaller gauge wire (including cheap wire that is fraudulently sold as 4 AWG wire) can create a fire hazard.

This item is currently not eligible for our low price guarantee. This may be due to supply constraints, manufacturer restrictions, or another reason. We're always here to help you get the best price possible so give us a call or email today. Our experts will do their best to build the system that works for you within the rules.

Specifications & Details

Power Specifications - Full Range Channels

RMS Power @ 4 ohms

100 watts x 4 channel

RMS Power @ 2 ohms

75 watts x 4 channel

Bridged RMS Power

150 watts x 2 channel

Power Specifications - Subwoofer Channel

RMS Power @ 4 ohms

500 watts x 1 channel

RMS Power @ 2 ohms

500 watts x 1 channel

Amplifier Specifications

Series

HD Series

Amplifier Class

Number of Channels

5-Channel

Total RMS Power Output

900 watts

Maximum Input Gauge Size

4 AWG

Minimum Impedance Unbridged

1.5 ohm

Minimum Impedance Bridged

3 ohms

THD at Rated RMS Power

.03%

Speaker Level Inputs

Yes

Preamp Outputs

Built-in Crossover

Low-Pass (LP)
High-Pass (HP)
Full (AP)

High-Pass Crossover Frequency

50 - 500 Hz

Low-Pass Crossover Frequency

50 - 500 Hz

Subsonic Filter

Switchable Off/30 Hz

Signal-to-Noise Ratio

108 dB

Remote bass/level controller

Optional (Accessory required and sold separately)

JL Audio HD-RLC

Fuse Rating

60A X 1 In-Line Fuse Recommended

Strappable

Sonic Certified Amplifier

Not Tested

Warranty and Return Policy

Parts Warranty Duration

2 years

Labor Warranty Duration

2 years

Warranty Provider

Manufacturer

Customer Ratings & Reviews

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Overall rating distribution

5 star		96%
4 star		4%
3 star		0%
2 star		0%
1 star		0%

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By feature average rating

Durability		4.9
Value		4.6
Features		4.9
Design		4.9
Usability		4.9