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JL Audio  JD500/1

JD Series 500W RMS x 1 at 2 Ohms, Class-D Mono Subwoofer Car Amplifier with NexD™ Switching Technology

Item #55821

Condition:   Brand New

Product Highlights

  • JD Series
  • 500W RMS x 1 at 2 Ohms
  • Class-D Mono Subwoofer Car Amplifier
  • NexD™ Switching Technology

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

$299.99

Reg. Price $379.99  Save $80.00
Add Extended Warranty
  Free 2-Years Warranty Included!
60 DAYS Returns Accepted.
FREE Lifetime Tech Support.
FREE Shipping.
60 DAYS Price change protection.

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JL Audio JD500/1 JD Series 500W RMS x 1 at 2 Ohms, Class-D Mono Subwoofer Car Amplifier with NexD™ Switching 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?
  • • JD Series Monoblock Subwoofer Amplifier
  • • 2.5 mm Allen-wrench
  • • 3 mm Allen-wrench
  • Owner's Manual

 


Why Choose JL Audio JD500/1 Mono Subwoofer Amplifier?


 

 

JL Audio JD500/1 Mono Subwoofer Amplifier Three-Quarter Front View
Nex-D Switching Technology Efficiency in a Sleek Aluminum Chassis

Delivering a powerful 500 watts at 2 ohms and 250 watts at 4 ohms, the JL Audio JD500/1 features cutting-edge NexD™ Switching Technology for maximum efficiency and minimal distortion, all packed into a stylish extruded aluminum chassis for seamless control and connectivity.

Customizable Low-Pass Filter, Versatile Inputs, and Automatic Turn-On for Powerful Bass

With a customizable low-pass filter ranging from 50-500 Hz, adjustable bass boost for deeper low-end performance, and versatile input options that support both line-level and speaker-level signals, the JD500/1 also features automatic turn-on technology, ensuring seamless and powerful bass with every use.

JL Audio JD500/1 Mono Subwoofer Amplifier Front Control and Input Panel View
JL Audio JD500/1 Mono Subwoofer Amplifier Rear Power and Speaker Terminal View
Easy System Expansion, Precision Control, and Remote Subwoofer Adjustment

The JD500/1 makes system expansion easy with preamp outputs, offers precise input sensitivity adjustments with a convenient LED clipping indicator, and allows effortless subwoofer control from the driver’s seat when paired with the optional RBC-1 remote.

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Frequently Asked Questions (FAQ)


  • • Why does my JD500/1 status light turn solid red and shut down completely?
    Solid red indicates a low-voltage error, a thermal overheat, or a speaker short circuit. Check your speaker wiring for bare strands touching metal, ensure your ground is connected to unpainted chassis iron, and verify the vehicle's resting voltage stays above 10V.
  • • Why does the status light ring flash red only when heavy bass drops hit?
    This is a low-voltage drop caused by insufficient current supply. If you used thin, cheap copper-clad aluminum (CCA) power wire, the voltage will sag drastically under a 500-watt load. Upgrade to a true 4-AWG pure oxygen-free copper (OFC) wiring kit.
  • • How do I stop the amplifier from clipping and making the bass sound distorted?
    Use the integrated **Clipping Indicator** ring around the input sensitivity knob. Play a heavy track at maximum unclipped radio volume, and turn up the gain until the ring glows red, then back it off slightly until the red light goes completely dark.
  • • Can I safely wire my dual 2-ohm subwoofers down to a 1-ohm load on this amp?
    No. The JD500/1 is strictly stable down to a **2-ohm minimum**. Wiring a 1-ohm load will draw excessive current, causing the amplifier to rapidly overheat, enter over-current protection, and shut down or fail internally.
  • • Why is there no sound coming out even though the JD500/1 status light is solid green?
    The amplifier is on but receiving no signal. Ensure your high-level or low-level RCA cables are plugged in completely. If you are using speaker-level inputs, verify the "Turn-on Mode" switch is set correctly to "DC" or "Signal" to unlock the signal path.
  • • Can I use a regular telephone cord to hook up my RBC-1 bass remote knob?
    No. The RBC-1 uses a specific internal layout. Using a generic telephone cord with flipped or incorrect pinning will disable the volume attenuator or cause the level tracking to fail completely. Always use the original JL Audio multi-conductor data cable.

SPECIFICATIONS


  • Low Frequency Response : 50-500 Hz
  • Number of Channels : 1
  • Frequency Response : 7-500 Hz
  • Built In Crossovers : Yes
  • RMS Power Output : 1x500 Watts
  • Amplifier Class : D
  • Fuse Rating : 50 A
  • Promo : Yes

FEATURES


Features:

  • Power That Adapts to Voltage: Delivers up to 500W RMS @ 2Ω at 14.4V and up to 400W RMS @ 2Ω at 12.5V, maintaining >80 dB signal-to-noise ratio with 1% THD+N
  • Flexible Impedance Performance: Produces 250W RMS @ 4Ω, 350W RMS @ 3Ω, and 500W RMS @ 2Ω at 14.4V for versatile subwoofer setups
  • Reliable Low-Voltage Output: Continues strong performance at 12.5V with 225W RMS @ 4Ω, 300W RMS @ 3Ω, and 400W RMS @ 2Ω
  • Built-In Clipping Protection: Integrated clipping LED helps set gain accurately using a 50Hz test tone to achieve maximum clean output
  • Always-On Low-Pass Crossover: Fixed 12dB/octave low-pass filter with continuously adjustable crossover frequency from 50–500Hz
  • Punchy Bass Boost Control: Variable bass boost from 0 to +12dB centered at 45Hz for enhanced low-end impact
  • Comprehensive Protection Circuitry: Automatically shuts down if thermal limits are exceeded, a short circuit is detected, or input voltage drops below 11V
  • Optional Wired Remote Control: Supports the optional RBC-1 remote level control for convenient in-dash output adjustment
  • Precision Input Sensitivity Control: Rotary gain control matches amplifier input to your source unit for maximum clean power
  • Selectable Input Voltage Range: Low (200mV–2V) for aftermarket head units or High (800mV–8V) for speaker-level and high-output signals
  • Multiple Turn-On Options: Choose Remote, DC Offset sensing, or Signal sensing for flexible integration with factory or aftermarket systems
  • Heavy-Duty Power Connections: Set-screw terminals accept up to 4-gauge power and ground wire with external 50-amp fuse required
  • High-Capacity Subwoofer Outputs: Dual parallel subwoofer outputs accept up to 8-gauge wire for easy multi-subwoofer wiring
  • Versatile Signal Inputs: Stereo RCA inputs accept both preamp and speaker-level signals and are internally summed to mono
  • Clean Preamp Pass-Through: Buffered RCA preamp outputs allow easy expansion to additional amplifiers without added noise
  • Smart Output Voltage Matching: RCA output voltage follows input in Low mode and is attenuated by -12 dB in High mode
  • Remote Level Control Ready: RJ-25 connection supports the optional RBC-1 wired remote for precise level adjustment from the driver’s seat

 

Specifications:

  • RMS Power Output (Watts x Channels): 250 x 1
  • Peak Power Output (Watts x Channels): N/A
  • Power at 2 Ohms (Watts x Channels): 500 x 1
  • Power at 1 Ohm (Watts x Channels): ---
  • Bridged Power (Watts x Channels): N/A
  • Minimum Impedance Bridged: N/A
  • Minimum Impedance Unbridged: 2
  • Best Frequency Response: 7–500 Hz
  • THD at Rated RMS Power: 1%
  • Signal to Noise Ratio: 80 dB
  • Input Voltage: 14.4v
  • Amplifier Class: D
  • Built-in DSP: No
  • Remote Control: Optional
  • Low-Pass Crossover Frequency: 50–500 Hz
  • Low-Pass Slope (dB/octave): 12 dB/octave
  • High-Pass Crossover Frequency: N/A
  • High-Pass Slope (dB/octave): N/A
  • Bass Boost: 0–12 dB
  • Bass Boost Frequency: 45 Hz
  • Fan Cooled: No
  • Fuse Rating: 50
  • Speaker Level Inputs: Yes
  • Preamp Outputs: 2
  • Width: 9-7/8 inches
  • Height: 2-1/8 inches
  • UPC: 699440983624
  • Weight: 7
  • 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.

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Write a review!
  • I do not expect anything less from JL especially their amps and subs. Worth every penny.

    Felix
    3/25/2021

  • Hooked up my 12” sub to this amp and they just match well. When it comes to amps, JL Audio is just top tier.

    Daniel
    4/1/2021

  • Increíble estos amplificadores dan lo que prometen

    Daniel Lopez
    2/10/2022

  • Good solid JL product Hooked up to a JL CS110TG-TW3 truck enclosure and it sounds really really good

    Lynnwood neubert
    12/21/2022

  • This amp is amazing easy install sounds amazing. I'm coming back for the 4 channel jl.

    Howard
    2/28/2023

  • Awesome amp especially for the price

    Vincenzo Naccari
    6/1/2023

  • JL Audio has always exceeded my expectations. this sub amp really pushes my sub to its limit and now sounds so good than ever before.

    Owen Parsons
    10/17/2023

  • Got this amp for my 15-inch JL sub. Integrated it to the setup, and man, it's pushing that sub to the max. With 500 Watts at 2 ohms, thinking I could throw in another sub. Best mono amp I've ever grabbed.

    Dalton
    11/14/2023
free installation