Open Box, Great - JL Audio HD1200/1 | Class D Small Profile Monoblock Amplifier

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Product highlights

• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total RMS Power: 1200W
• R.I.P.S. - Regulated, Intelligent Power Supply
• Single Cycle control - High Fidelity Class D
• 1 Pair of Buffered Preamps RCA Outputs
• Dimensions: 10.74"L x 7.85"W x 1.93"H

Learn more about the LS-hd12001-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.

Item Condition - Open Box, Good Condition:
A Good Open Box used product shows wear from consistent use, but it remains in good condition and works perfectly. It may be marked, have identifying markings on it, or show other signs of previous use or installation. Original packaging, paperwork or protective wrapping may be missing or not included in its entirety. Warranty details are included in the item description or comments.

Item Condition - Like New:
A Open Box, Like New product is an apparently untouched product in perfect condition that includes all accessories and packaging. Original protective wrapping may be missing, but the original packaging is intact and pristine. There are absolutely no signs of wear on the item or installation. Instructions are included. Warranty details are included in the item description or comments. Item is suitable for presenting as a gift and savings should be abundant!

JL Audio HD Monoblock Class D Wide-Range 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 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 HD1200/1 employs JL Audio's exclusive Regulated, Intelligent Power Supply (R.I.P.S.) design. This sophisticated power supply allows the amplifier to produce its optimum power (1200 watts x 1) 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 HD1200/1 gives you the freedom to use a variety of subwoofer 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.

HD1200/1 Features:

JL Audio HD Series Monoblock Class D Amplifier
*RMS Power Rating (11V-14.5V):

4 ohm: 1200 watts x 1 chan.
3 ohm: 1200 watts x 1 chan.
2 ohm: 1200 watts x 1 chan.
1.5 ohm: 1200 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
1 Pair of Buffered preamp RCA outputs for daisy chaining the audio signal
Speaker level inputs via RCA (JL Audio XD-CLRAIC2-SW required and sold separately
Remote 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 output polarity, "Phase": 0/180°
Selectable State-variable slope: 12 dB/octave Butterworth or 24 dB/octave Linkwitz-Riley
Selectable infrasonic filter, "Subsonic": Defeatable or 30 Hz
Selectable filter modes: Low-Pass or High-Pass, Defeatable
Cutoff Freq. Range: Continuously variable: 50 - 500 Hz
Total Harmonic Distortion: <0.03% @ 4Ω (Average at 1kHz)
Signal to Noise Ration:

Referred to Rated Power: 111 dBA
Referred to 1 Watt: 82.2 dBA

Frequency response: 6 - 8,000 Hz (+0, -1 dB)
Damping Factor: >500 @ 4Ω/50 Hz, >250 @ 2Ω/50 Hz
Recommended fuse rating: 100A x 1 (inline, not included)
Dimensions: 10.74"L x 7.85"W x 1.93"H
**4 gauge OFC power and ground wiring is recommended 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
30 Day Manufacturer's Warranty

Check out the JL Audio HD1200/1 Owner's Manual

Notes from JL Audio:

*If you connect a load higher than 4Ω nominal, power will drop by half with every doubling of impedance above 4Ω stereo. If you connect a load lower than 1.5Ω nominal, 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 14 for details.
**We 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.
**The HD1200/1's "+12 VDC" and "Ground" connections are designed to accept 4 AWG power wire. 2 AWG or 1/0 AWG pure copper wire is recommended for any power wire run longer than 72 inches (180 cm). This larger wire should be reduced to 4 AWG using a distribution block within 36 wire inches (90 cm) of the amplifier's "+12 VDC" connector. For runs shorter than 72 inches, 4 AWG pure copper power wire is acceptable

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 - Subwoofer Channel

RMS Power @ 4 ohms

1200 watts x 1 channel

RMS Power @ 2 ohms

1200 watts x 1 channel

RMS Power @ 1 ohm

1200 watts x 1 channel

Amplifier Specifications

Series

HD Series

Amplifier Class

Number of Channels

1 - Mono

Total Peak Power Output

1200 watts

Total RMS Power Output

1200 watts

Maximum Input Gauge Size

4 AWG

Minimum Impedance Unbridged

1.5 ohm

Minimum Impedance Bridged

Not Bridgeable

THD at Rated RMS Power

<0.03%

Speaker Level Inputs

Yes

Preamp Outputs

1 pair

Built-in Crossover

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

High-Pass Crossover Frequency

50 - 500 Hz

Low-Pass Crossover Frequency

50 - 500 Hz

Subsonic Filter

Switchable Off/30 Hz

Signal-to-Noise Ratio

111 dB

Remote bass/level controller

Optional (Accessory required and sold separately)

JL Audio HD-RLC

Fuse Rating

100A X 1 In-Line Fuse Recommended

Strappable

Sonic Certified Amplifier

Not Tested

Amp Bluetooth Connectivity

Hi-Res Certified

What is in the box?

Paperwork

User manual

WITB: Amplifiers

Amplifier
Allen wrenches (2)

Warranty and Return Policy

Parts Warranty Duration

30 days

Labor Warranty Duration

30 days

Warranty Provider

Manufacturer

Customer Ratings & Reviews

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By feature average rating

Durability		5
Value		5
Features		5
Design		5
Usability		5

Customer Reviews

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1200 watts of true power

This is the best amplifier that I have ever purchased. I know I have 1200 watts of power at any Ohm level between 1.5 and 4.
I have 2 of them Powering 2
DS18 EXL-XX12.4D Subwoofers, (One powering each sub) these things rock!!!

By Corey on September 13, 2020 Checkmark Icon

Verified purchase

1 found this helpful

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Big Power In Small Package

Like the previous JL amp I use to own 1000/1V2 this new one does not disappoint. It delivers the power no matter the own setting you have your sub configured at. The amp has a small foot print, about half the size of 1000/1 series amps. It is still a little power hungry but it is to be expected.

By Alberto on July 13, 2020 Checkmark Icon

Verified purchase

1 found this helpful

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JL Audio HD1200/1 Damaged Packaging Only (New)

I purchased the JL HD1200/1 to replace my JL XD600/1. I set the gain to 37.41 volts / 700 watts to drive two JL 10tw1’s wired in a 2 ohm load. The bass output has “cleaned up” tremendously. The fidelity of the XD amp was not as refined as with the HD series. I don’t know exactly how to describe it, but the bass is more controlled and less “boomy”. I have plenty of headroom in this amp to allow for an upgrade that I plan to do at a later date. I’m either going to upgrade the subs to the JL 10TW3’s or Alpine SWR-T10’s. Still trying to decide. I have limited room under the rear seat of my 2008 Honda Ridgeline. I like the fact that this amp’s power supply is regulated and puts out the advertised wattage at any voltage between 11-14.4 volts and at any load between 1.5-4 ohms. I’m running a passive setup with a Kenwood DDX9905s head unit, Alpine xs65c components in the front doors, JL C5-650x coaxials in the rear doors, Alpine pdx-f4, JL HD1200/1, and two JL 10tw1’s in a custom sealed box. All doors are entirely sound deadened. I plan to updated the Alpine pdx to the JL HD600/4 as well as the subs mentioned earlier. Sonic Electronixs is my favorite place to get my audio gear. They have the best prices with very fast shipping. I wouldn’t be happier purchasing anywhere else.

By Anonymous on May 13, 2018

1 found this helpful

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Add-ons

NVX XKIT42

2-Channel 100% OFC Complete True 4 Gauge Amp Kit with RCA Cables and Speaker Wire

(124)

$109.99

List price $143.99

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JL Audio HD1200/1 OPEN BOX

We apologize

This item has been discontinued

Description

Advanced Rollback Protection

R.I.P.S. System

HD1200/1 Features:

Specifications & Details

Item Details

Customer Ratings & Reviews

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