facebook no script image

JL Audio  HD1200/1 On Sale

HD Series 1200W RMS x 1 at 2 Ohm, Class-D Mono Subwoofer Car Amplifier with R.I.P.S. Power Technology and Single Cycle Control Technology

Item #30509

Condition:   Brand New

Product Highlights

  • HD Series
  • 1200W RMS x 1 at 2 Ohm
  • Mono Subwoofer Amplifier
  • Class-D Car Amplifier
  • R.I.P.S. Power Technology
  • Single Cycle Control Technology

  Free 2-Years Warranty Included!
60 DAYS Returns Accepted.
FREE Lifetime Tech Support.
FREE Shipping.
60 DAYS Price change protection.
Special offer:

$1,399.99

Discount Already Applied!
Reg. Price $1,599.99  Save $200.00
In Stock
In Stock
 
Limited Stocks left!
Add Extended Warranty
Getting Delivery Estimate...
  Free 2-Years Warranty Included!
60 DAYS Returns Accepted.
FREE Lifetime Tech Support.
FREE Shipping.
60 DAYS Price change protection.

No Credit needed for acima logoLearn More

JL Audio Authorized Dealer

Huge Saving on Other items:


Huge Saving on Other items:


JL Audio Banner for Onlinecarstereo

JL Audio HD1200/1 HD Series 1200W RMS x 1 at 2 Ohm, Class-D Mono Subwoofer Car Amplifier with R.I.P.S. Power Technology and Single Cycle Control Technology


We are a JL Audio authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!

What's Inside?
  • • Mono Subwoofer Class-D Amplifier
  • • Self-adhesive JL Audio badge
  • • Power connector plug
  • • Speaker connector plug
  • • (4) mounting feet
  • • (4) Bolts for mounting feet (M4 x 40mm)
  • • 2.5 mm Allen-wrench
  • • 4 mm Allen-wrench
  • • Power wire note
  • Owner's Manual

 


Why Choose JL Audio HD1200/1 Mono Subwoofer Amplifier?


JL Audio HD1200/1 Mono Subwoofer Amplifier Three-Quarter Front View
Unleash 1200 Watts of Clean, Controlled Power

The JL Audio HD1200/1 is a high-performance Class-D monoblock amplifier built for serious car audio enthusiasts. Delivering 1200W RMS at 1.5–4 ohms, it provides clean, powerful output with ultra-low 0.03% THD and a 110 dB signal-to-noise ratio. Its wide 6Hz–8kHz frequency response makes it ideal for powerful subwoofers or high-performance midrange systems.

Get More Power Without Straining Your Electrical System

JL Audio's Single Cycle Control™ HD technology corrects distortion over 400,000 times per second for precise, reference-quality sound. The R.I.P.S. regulated power supply maintains consistent output from 11–14.5 volts while adapting to changing speaker loads. With up to 80% efficiency, RealSink™ thermal management, and rollback protection, the HD1200/1 delivers serious power while keeping heat and current draw under control.

JL Audio HD1200/1 Mono Subwoofer Amplifier Straight Rear Input and Output Terminal Angled View
JL Audio HD1200/1 Mono Subwoofer Amplifier Front Settings Panel View
Dial In Your Sound and Make Every Watt Count

Fine-tune your system with adjustable low-pass, high-pass, or full-range filtering, selectable 12/24 dB slopes, a 50–500Hz crossover range, and a 30Hz infrasonic filter. Differential-balanced inputs minimize noise and support OEM integration, while the optional HD-RLC remote provides convenient subwoofer level control. Compact, efficient, and seriously powerful, the HD1200/1 is ready to transform your car audio system.


Popular JL Audio Amplifier Comparisons


Ultimate JL Audio 1,000W+ Amplifier Performance Battle
JL Audio HD1200/1

JL Audio HD1200/1
HD Series 1200W Monoblock Class D Car Amplifier

PREMIUM POWER
  • • 1200W RMS @ 2 Ohms
  • • R.I.P.S. Power Technology
  • • Advanced Signal Processing
  • • High-Output Subwoofer Systems
JL Audio VX1000/1i

JL Audio VX1000/1i
VXi Series 1000W Monoblock Class D Amplifier with DSP

DSP POWER
  • • 1000W RMS @ 2 Ohms
  • • Integrated DSP
  • • TüN Software Control
  • • Advanced System Tuning
  • • OEM Integration
JL Audio RD1000/1

JL Audio RD1000/1
RD Series 1000W Monoblock Class D Car Amplifier

BEST BALANCE
  • • 1000W RMS @ 2 Ohms
  • • NexD Switching Technology
  • • Bass Boost
  • • Low-Pass Filter
  • • Subwoofer Applications
JL Audio JD1000/1

JL Audio JD1000/1
JD Series 1000W Monoblock Class D Car Amplifier

VALUE PICK
  • • 1000W RMS @ 2 Ohms
  • • NexD Technology
  • • Variable Low-Pass Filter
  • • Compact Installation
  • • High-Value Performance
JL Audio XDM1000/1

JL Audio XDM1000/1
XDM Series 1000W Monoblock Class D Marine Amplifier

MARINE READY
  • • 1000W RMS @ 2 Ohms
  • • NexD Technology
  • • Marine-Grade Construction
  • • Corrosion Resistant
  • • Ideal for Marine Applications

Recommended JL Audio Subwoofers for HD1200/1


JL Audio 10W7AE

10-INCH W7AE

JL Audio 10W7AE

750W RMS 10-inch W7AE subwoofer designed for powerful, detailed bass in a compact package.

JL Audio 12W7AE

12-INCH W7AE

JL Audio 12W7AE

1000W RMS 12-inch W7AE subwoofer delivering deep, powerful bass and an excellent match for the HD1200/1.

JL Audio 13W7AE

13.5-INCH W7AE

JL Audio 13W7AE

1500W RMS 13.5-inch W7AE subwoofer built for maximum bass output and high-performance systems.

Build Your System: The HD1200/1 pairs especially well with the JL Audio W7AE family, giving you a premium foundation for deep, powerful, and highly controlled bass.

JL Audio HD1200/1 Highlights


MONOBLOCK POWER

1200W RMS Class-D Amplifier

Delivers 1200W RMS at 1.5–4 ohms with clean, powerful output for serious subwoofer and high-performance car audio systems.

ADVANCED TECHNOLOGY

Single Cycle Control™ HD

Corrects distortion more than 400,000 times per second for accurate, detailed, and reference-quality sound reproduction.

CONSISTENT POWER

R.I.P.S. Regulated Power Supply

Maintains consistent output from 11–14.5 volts and across 1.5–4 ohm loads for reliable performance in real-world driving conditions.

COMPACT EFFICIENCY

Powerful Yet Highly Efficient

The Class-D design delivers up to 80% efficiency at half power while using less current and producing less heat than comparable Class AB amplifiers.

THERMAL CONTROL

RealSink™ Thermal Management

Advanced heat dissipation and rollback protection help keep the amplifier cool and playing reliably during demanding listening sessions.

SYSTEM TUNING

Flexible Active Crossover

Select low-pass, high-pass, or full-range operation with 50–500Hz frequency adjustment and selectable 12 or 24 dB/octave slopes.

OEM READY

Easy Integration & Installation

Differential-balanced inputs minimize noise while detachable connections, flexible mounting options, buffered outputs, and optional HD-RLC remote support simplify installation.

 


Frequently Asked Questions (FAQ)


  • • Why does my HD1200/1 status light turn flashing red?
    The amplifier has entered thermal protection because it is overheating. Ensure the heat sink fins aren't choked by floor carpet or mounted upside down under a seat. Provide at least 1 to 2 inches of open air clearance.
  • • The status light is solid red and there is no sound output. How do I fix it?
    Solid red indicates a low-voltage condition or a short circuit. Check your speaker terminals for touching bare wires, verify your ground cable is secured to bare chassis metal, and ensure the battery voltage stays above 10V.
  • • Why does the bass output drop or fade during extended, heavy listening sessions?
    This is caused by JL's Advanced Rollback Protection circuit. Instead of shutting off completely when hot, the amplifier automatically scales back peak power output to cool down. Improve the airflow around the chassis to stop it.
  • • Why won't my 1/0 gauge power and ground cables fit into the amplifier blocks?
    The heavy-duty removable power connector block is explicitly engineered to accept a maximum of **2 AWG pure copper wire**. Do not force or shave 1/0 wire down; use a high-quality 1/0 to 2 AWG pin reducer adapter block instead.
  • • Can I safely wire my subwoofers down to a 1-ohm load on this amplifier?
    No. The R.I.P.S. power supply requires a minimum stable load of **1.5 ohms**. Wiring a 1-ohm load will pull excessive current, trigger over-current protection, and cause the amplifier to shut down or damage internal components.
  • • Why do I get a massive popping noise through my subwoofers every time the car turns on?
    This is caused by DC offset or timing delays from your head unit. Ensure your remote turn-on lead is connected to a proper switched accessory source, or install a simple time-delay relay on the remote wire to delay turn-on by 2 seconds.
  • • Can I use a regular telephone cord to hook up my HD-RLC bass volume knob?
    Yes. Unlike the digital VXi remotes, the analog HD-RLC control knob utilizes standard straight-through telephone pinning architecture. A standard telephone cable can be safely used as an extension or replacement link.

 


JL Audio HD1200/1 Videos & Reviews


← Swipe left or right to browse videos →


SPECIFICATIONS


  • Number of Channels : 1
  • Frequency Response : 6-8000 Hz
  • Built In Crossovers : Yes
  • Amplifier Class : D
  • Fuse Rating : 1x100 A
  • Promo : Yes

FEATURES


Features:

  • Wide-Range Monoblock Powerhouse: HD1200/1 is a single-channel Class-D amplifier with an ultra-wide frequency response of 6Hz–8kHz, ideal for subwoofers or high-performance midrange systems
  • 1200W RMS of Clean Authority: Delivers 1200 Watts RMS at 1.5–4Ω across 20Hz–20kHz with 110 dB S/N ratio and ultra-low 0.03% THD
  • Single Cycle Control™ HD Technology: Patented Class-D design corrects distortion over 400,000 times per second for true reference-grade sound
  • Compact Yet Brutally Efficient: Up to 13% smaller and over ½-inch shorter than Class AB amps while achieving 80% efficiency at half power
  • Easy on Your Electrical System: Draws up to 60% less current than a comparable Class AB amplifier with the same output
  • R.I.P.S. Consistent Power Delivery: Regulated Intelligent Power Supply maintains identical output from 11–14.5V and across 1.5–4Ω loads
  • Voltage-Stable Performance: Regulated power supply keeps rail voltage and distortion under control in real-world driving conditions
  • Load-Adaptive Intelligence: Automatically monitors real speaker impedance and optimizes output for maximum dynamics and reliability
  • RealSink™ Thermal Management: Advanced heat dissipation uses convection and radiation to keep the amplifier cool under extreme loads
  • Advanced Rollback Protection: Reduces output smoothly during overheating without ever shutting down your music
  • Noise-Free Differential Inputs: Differential-balanced architecture minimizes alternator whine and allows direct OEM head unit integration
  • OEM Integration Ready: Supports speaker-level inputs using an optional speaker wire to RCA adapter
  • Multi-Color Status LED Monitoring: Visual indicators display power-up, normal operation, thermal protection, impedance faults, and system errors
  • Low-Voltage Safety Shutdown: Complete shutdown occurs only if vehicle voltage drops below 10V
  • Flexible Mounting Options: Supports standard mounting, lateral mounting feet, or optional HD stack mounting
  • Secure Control Panel Cover: Factory-installed security cover protects settings while maintaining a clean, professional look
  • Simplified Gain Setup: Predictable R.I.P.S. output allows fast and accurate gain adjustment with basic tools
  • Fully Adjustable Active Crossover: Selectable low-pass, high-pass, or full-range operation with adjustable slopes and frequencies
  • Switchable Filter Slopes: Choose between 12dB/octave Butterworth or 24dB/octave Linkwitz-Riley alignment
  • Wide Crossover Frequency Control: Adjustable cutoff range from 50–500Hz for precise system tuning
  • Built-In Infrasonic Protection: 24dB/octave infrasonic filter at 30Hz protects subwoofers while preserving deep bass output
  • Selectable Output Polarity: Polarity inversion switch improves subwoofer and midbass integration
  • Detachable Power Connection Plug: Simplifies wiring with clean, installer-friendly connections
  • Heavy-Duty Power Terminals: Accepts up to 4 AWG power wire, with 2 AWG recommended for long runs
  • External Fuse Protection Required: Requires a 100-amp AFS, ANL, or MAXI fuse for safe operation
  • Parallel Subwoofer Output Plug: Detachable speaker output supports easy parallel subwoofer wiring
  • High-Capacity Speaker Connections: Accepts 16–12 AWG speaker wire for high-current delivery
  • Buffered Preamp Pass-Through Outputs: Allows seamless expansion to additional amplifiers without added noise
  • Remote Level Control Ready: RJ-14 connector supports optional HD-RLC remote for in-cab subwoofer level adjustment
  • Clean Rear-Mounted Layout: All inputs and outputs are located on the rear for a tidy, professional installation

 

Specifications:

  • RMS Power Output: 1200 x 1 Watts
  • Peak Power Output: N/A
  • Power at 2 Ohms: 1200 x 1 Watts
  • Power at 1 Ohm: ---
  • Bridged Power: N/A
  • Minimum Impedance Bridged: N/A
  • Minimum Impedance Unbridged: 1.5 Ω
  • Minimum Impedance: 1.5 Ω
  • Best Frequency Response: 6-8 kHz
  • Total Harmonic Distortion (THD) at Rated RMS Power: 0.03%
  • Signal to Noise Ratio: 82 dB
  • Input Voltage: 14.4 V
  • Amplifier Class: D
  • Low-Pass Crossover Frequency: 50-500 Hz
  • Low-Pass Slope: 12 or 24 dB/octave
  • High-Pass Crossover Frequency: 50-500 Hz
  • High-Pass Slope: 12 or 24 dB/octave
  • Bass Boost: No
  • Bass Boost Frequency: N/A
  • Fan Cooled: No
  • Fuse Rating: 100 A
  • Speaker Level Inputs: Yes
  • Preamp Outputs: 2
  • Width: 10-13/16 inches
  • Height: 2 inches
  • Depth: 8-13/16 inches
  • UPC: 699440982504
  • Weight: 6.6
  • Authorized Internet Dealer
Warranty: 2 Year(s) 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 repair within 1 year from the original date of purchase with proper return authorization.

Do you own this product?

Write a review!
  • This is the most solid all around amp i have ever owned!!! It doesnt overheat and has uncompromisingly clean signal! I have been looking for an amp its equal unsuccessfully for almost a year and with the discounts offered on this site it has unmached bang for your buck!!!

    George
    10/14/2014

  • Great amp! Will not overheat like slash series models! Small and powerfull!

    Brian
    10/14/2014

  • overall experience is a thrill and I'm enjoying my new treasure installed in my ride

    Maison
    11/11/2019

  • Running this amplifier on my 13w7 in a custom ported enclosure and it absolutely pounds. Deep and super clean and tight from low volumes all the way to the max. Absolute must amp if you’re needing over 1000 watts of power. Small and easy to fit under the driver seat if you want to keep your amps hidden also. Amazing power and economical size. A+++

    Ryan Parker
    9/5/2024
    product review image

  • I have been a JL owner for years and I bought this as an upgrade from my original 1000/1 slash series, I like the small footprint and sleekness while still delivering JL’s amazing quality!

    Micah Rodriguez
    10/2/2024

  • Great amp!!! I use it to run my 2, 12W6s. It has never shut down on me. Extremely clean, and perfect size. Definitely recommend. A+

    Michael
    4/30/2026
free installation