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JL Audio JX1000/1

Mono subwoofer amplifier — 1,000 watts RMS x 1 at 2 ohms

9 Reviews | 8 questions - 11 answers


Our take on the JL Audio JX1000/1

You know you're holding a serious piece of sound equipment when you feel the heft of a JX amp. JL Audio designed these amplifiers with sturdy, high-grade parts that ensure excellent heat management, provide high current flow, and deliver stable performance in almost any situation. You won't find blinking lights or meters on the outside of these amps, but you will find oversized output transistors and rugged MOSFET power supplies inside. The sleek, high-mass aluminum heatsink keeps things cool enough to virtually eliminate thermal shut-downs.

You know you're holding a serious piece of sound equipment when you feel the heft of a JX amp. JL Audio designed these amplifiers with sturdy, high-grade parts that ensure excellent heat management, provide high current flow, and deliver stable performance in almost any situation. You won't find blinking lights or meters on the outside of these amps, but you will find oversized output transistors and rugged MOSFET power supplies inside. The sleek, high-mass aluminum heatsink keeps things cool enough to virtually eliminate thermal shut-downs.

The JX1000/1 mono amp puts out up to 1,000 watts RMS to your sub, so you'll experience thunderous bass in your music. Use the variable low-pass filter and bass boost to tune the amp to your subwoofer system. An optional remote level control lets you turn the sub up or down from the front seat. The amp includes speaker-level inputs, along with preamp inputs and outputs, so it's ready to work in virtually any system.

Confused about impedance? Check out our article on matching subs and amps.

Product Highlights:

  • mono subwoofer amplifier
  • 500 watts RMS x 1 at 4 ohms (1,000 watts RMS x 1 at 2 ohms)
  • Class D amplifier design
  • MOSFET switching power supply
  • frequency response: 20 Hz - 150 Hz
  • variable low-pass filter (50-200 Hz, 12 dB/octave)
  • variable bass boost (0-12 dB at 45 Hz)
  • optional wired remote level control
  • preamp inputs and outputs
  • speaker-level inputs
  • 4-gauge power and ground leads and a 80-amp fuse recommended — wiring and hardware not included with amplifier
  • no onboard fuses — when installing multiple amps in a system, an additional 80-amp in-line fuse between the distribution block and the amplifier is recommended
  • 11-5/16"W x 2-1/8"H x 7-11/16"D
  • warranty: 2 years
  • Our 60-day money-back guarantee

Works great, really made the speaker sound amazing.

WBM, Elkton, VA

What's in the Box:

  • Monoblock subwoofer amplifier
  • 10" Speaker-level harness
  • 4 Mounting screws
  • 4 Flat washers
  • Hex-key
  • Owner's Manual

JL Audio JX1000/1 Reviews

Average Customer Review(s):

(9 Reviews)

Brent Mercer

WBM from Elkton, VA on 4/1/2016

Works great, really made the speaker sound amazing.



JL Audio JX1000/1

Zet D from Tuscaloosa, AL on 9/22/2014

I've had this amp for a few days and boy does it Kick butt! Clean strong bass for my two alpine 12d4! I have In a mustang so u already know how strong it sounds....

Pros: Great bang for your buck

Cons: U can't go wrong with this Amp!

Cant go wrong

Joe from Cedar Springs, Mi on 3/23/2014

JL audio makes some of the best equipment and this amp is no slouch. Its powering my two 12" JL audio TW3 wedge subs and it is unreal how hard they can pound, but very clear. Frequency down to 60hz on the amp, 85hz on my deck crossover. Bass boost is all the way down and its STILL loud, clear, punchy. I also have 4 fosgate p1683's in my doors, powered by another JL audio JX360 4 channel, and the result is a concert in my truck. I get so many compliments on how loud, but yet how clear my stereo is. Thank you JL audio for making such a high quality product!!

Pros: 500 watts at 4 ohms is exactly what I need and this amp does an excellent job.

Cons: No cons, this amp slams.

Great product

Brady from Yuba city on 3/16/2014

Crutchfield Customer Review (What's this?)

This is a great product i don't think I could think of any cons of it I love it. It's sounds amazing in my truck I couldn't be happier



good amp if two ohms is what your looking for

car audio fanatic from garden city mi on 12/15/2013

Great amp with superb sound quality pushes true rms and is worth every penny

Pros: Small yet powerful budget friendly

Cons: Not 1 ohm stable

Whhoop go JL

VWBRO from naptown, indiana on 8/31/2012

I currently am running my two type R 12's at 2 ohms off this bad thing... recommended by the my Installer/retailer... seems to be plenty loud.. haven't really exceeded midway on my boost. yet i have the knob in the front separate from the interface... (preferred) Im really surprised how the performance handles... definitely can see where an eventual hearing problem might arise.. Lol :)

Pros: if you have to go bigger and greater not for you then.. i think its perfect to really take a simple sounding system over the edge and really rattle some bolt and everything else attached to your ride....

Cons: it seems to get a little warm... maybe i should jus keep my seat down to avoid any excessive heat

This little amp knocks! Power to spare

MikeT from Phillipsburg NJ on 7/25/2012

Crutchfield Customer Review (What's this?)

This amp puts out the exact recommended RMS for my 2 JL 12w3v3-2's but with the 2 ohm subs hooked up this amp on a 2ohm load the amps gain only needs to be turned up 1/4 of the way. This amp makes the hairs on my arms vibrate when the stereo is blasted and the bass hits the lowest tones. setup sounds so nice. You can also hear my car about 5 seconds before i turn onto my street which is well over 100 ft away. This is my best system yet and by far my favorite. I have had it for over 2 years and it still impresses me when i turn it on.

Pros: its really punchy im afraid that if turn the subs up anymore ill blow my back window out of my car waaay before im even in the danger zone of blowing my subs.

Cons: i wish it came with the remote volume knob instead of having to buy it separately. other than that there are none


Cliff Wilson from East Texas on 3/12/2011

Got amp installed on 2 clifdesign 10's and they couldn't handle the power so i upgraded to 2 DAD definitive audio 12's from Performance audio in Tyler, Texas. Thats just what i needed these 12's powered by the JL 1000 / 1 are very strong. I WOULD DEFINITELY RECOMMEND BUYING THIS AMP but only push woofers that can handle the power.



JL Audio JX 1000/1

Cliff from East Texas on 2/18/2011

Getting amp installed tomorrow. Really wanted to go with 1000/1v2, dealer told me that the JX amp with new technology would jam just as hard. Hopefully i want be dis appointed. I will update comments after tomorrow (2-18-2011).




Hands-on research

Product Research



Monoblock Amplifier: The JL Audio JX1000/1D monoblock subwoofer amplifier that has been optimized for low-frequency (20-150 Hz) amplification of connected subwoofers.

Note: The JX1000/1D is not designed for driving full-range speakers, midrange drivers, or tweeters.

Class D Amplifier Circuit: The JX1000/1D employs an advanced Class D switching design that allows it to produce 1,000 watts of clean subwoofer power while drawing significantly less current from your electrical system and generating less heat than a conventional Class A/B or Class B design.

MOSFET Switching Power Supply: The JL Audio JX series monoblock amplifier employs a rugged MOSFET power supply for outstanding reliability and operational stability.

Amplifier Ratings:

JX1000/1D Amplifier Specifications Ohms Watts Channels Frequency Response Signal-to-Noise THD
Rated Continuous (RMS) Power @ 14.4V 4 500 1 20-200 Hz 75 dB 1%
3 750 1 20-200 Hz 75 dB 1%
2 1,000 1 20-200 Hz 75 dB 1%
Rated Continuous (RMS) Power @ 12.5V 4 500 1 20-200 Hz 75 dB 1%
3 700 1 20-200 Hz 75 dB 1%
2 900 1 20-200 Hz 75 dB 1%

High-Mass Heat Sink: A heavy extruded aluminum heat sink is designed to keep the JL Audio JX series amplifier in a comfortable thermal range during demanding operation. This high-mass, extruded heat sink removes heat from the amplifier circuitry, extending high-power operation. This improves reliability and reduces the frequency of thermally related shut-down event.

Protection Circuitry: The JX1000/1D's protection circuitry automatically shuts the amplifier down if thermal limits are exceeded, a short-circuit is detected in the speaker wiring, or if low supply voltage limits are reached.

Status Indicator Lights: There are two status indicator lights on the right side of the amplifier.

  • Power (Green): This LED lights green to indicate that the amplifier is turned on and operating normally.
  • Protect (Red): The Protection LED lights Red to indicate the amplifier's protection circuitry has been activated to prevent product failure due to thermal overload, a short-circuit, or a dangerously low impedance connected to the amplifier's outputs.


Input Sensitivity: The Input Sensitivity Control is used to match your source unit's output voltage to the input stage of the amplifier for maximum clean output.

  • Low-Level Input Range: 200mV-4V (RMS)
  • High-Level Input Range: 2V-10V (RMS)

Low Pass Crossover: The JL Audio JX1000/1D monoblock amplifier is equipped with a 12dB/octave Butterworth low-pass filter with variable frequency selection from 50 to 200Hz.

Bass Boost: The amplifier is equipped with a variable 0 to +12dB, 45Hz Bass Boost.

Remote Level Control: The JX1000/1D is equipped with an RJ-25 connection for an optional wired Remote Level Control (136RBC1, sold separately) that allows volume level adjustment of the amplifier from the front of your vehicle.


Power/Ground/Turn-On Terminals: The monoblock amplifier features set-screw terminals for the power, ground, and remote turn-on connections.

  • Power and Ground: The JL Audio amplifier's set-screw Power and Ground connections are designed to accept 8 to 4 AWG power wire. A 2.5mm hex-wrench is supplied for making connections.
  • Remote Turn-On: The JL Audio JX series amplifier's set-screw turn-on lead will accept 18 to 8 AWG wire. The same 2.5mm hex-wrench is supplied for making connection.

Note: The Amplifier is not equipped with a fuse. An external 80-amp AFS, AGU, or MAXI fuse (not included) must be installed on the power wire. If a wiring kit is used which includes a fuse with a value other than 80-amps, the original should be replaced with a 80-amp fuse

Speaker Output Terminals: The JL Audio JX1000/1D features four set-screw speaker terminals for an easy parallel subwoofer connection. The monoblock amplifier's four set-screw speaker terminals will accept 16 to 8 AWG speaker wire. A 2.5mm hex-wrench is supplied for making connections.

Preamp Inputs: The monoblock amplifier features one set of stereo RCA input jacks. The amplifier features a dedicated Input Sensitivity gain control for these inputs. These controls are designed to match the input sensitivity of the JX1000/1D to the specific signal source that is feeding it. The amplifier's low-level input can be set between 200mV-4V RMS.

Speaker Level Inputs: The JL Audio JX1000/1D also accepts speaker level signals, including those from factory systems (without the need for a line-output converter), via the supplied 10" speaker-level harness. The amplifier's high-level input can be set between 2V-10V RMS.

Preamp Outputs: The JX1000/1D incorporates a pass-through preamp output sections, so that additional amplifiers can easily be connected to the same signal(s) feeding the monoblock amplifier. These preamp output signals are buffered to prevent noise and are always preamp level, regardless of the level of signals feeding the amplifier's inputs.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

because of the12W7AE i bought from you guys [ CHRIS  Jul 04, 2016 ]
I've owned several different brands of high quality mobile audio amps, and JL Audio is superior to all of them in many ways. I have been using JL for over 15 years, and I will probably never change. [ David  Feb 01, 2016 ]
I love JL's subwoofers, they're my absolute favorite. The sound quality can't be beat. I don't like my car to rattle, I like that nice clear sounding bass. JL stays on point. So I bought this amp to pair them up, I can't wait to hear how they sound. This amps give me a few options to run 1000w or 500w. I'll start off with 500w. The sound quality can't be beat. [ William  Dec 04, 2015 ]

8 questions already asked

No. The amplifier is only one channel (mono). The two sets of output terminals are provided for convenience when connecting multiple subs. The amp is not 1 Ohm stable so, you cannot wire two 2 Ohm subs in parallel. You can wire two 4 Ohms in parallel and present the 2 Ohm final load when you do. This will get the full 1000 watts RMS from the amp with each sub getting up to 500. [ Ryan  Jun 29, 2017 ]  Staff
Thanks for your question. For information on selecting the best amp/sub combo I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences and help you make the best choice for your system. [ Kenny  Jun 06, 2017 ]  Staff
I can't actually answer the question, because I am using my JX1000/1 to power my one Alpine SWR12D2. I don't know what vehicle you have, but I can tell you this. I can make everything shake cleanly in my 2008 Toyota Corolla. Like all JL Audio products, it is an excellent amplifier! [ David  Apr 07, 2016 ]
This amplifier is not 1 Ohm stable so you'll need to be able to wire the subs for at least 2 Ohms. I hope that helps! [ Ryan  Jan 01, 2016 ]  Staff
I forwarded your question to an Advisor and they responded with the following: The JL Audio JX1000-1 has speaker level inputs so you can tap into the rear speaker wires. You don't need a line output converter. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy  Jul 09, 2015 ]  Staff
My set up consists of two JL Audio 10W3V3-4's & the JL Audio JX1000/1D. The subs are 4ohm but I'm going to wire them in parallel so they each can get the 500 watts the amp can deliver. With one sub there are limited options so my recommendation would be to go with two subs. It is a bit much for my main genre of music which is jazz but I do like old school hip hop & R&B along with some new school music. Point is when I want clean, hard hitting bass I have it. Take into consideration how much you are willing & can afford to spend & your style of music & hit up the advisors. That helped me a great deal & helped me understand the components & what is suitable for my flavor of music. Oh, almost! How much of your vehicles trunk or hatch back or SUV space are you willing to devote to your sub box because it is going to take up space. My box build will be complete next week so I'll let you know how my system turns out. Til then, happy listening! [ Tarick  Mar 14, 2015 ]
What's up K! I have not put my system together yet because I am building my own box so I can't offer up any credible feedback on performance just yet but when I was shopping for all my components, I asked a lot of questions as to the amps capability. I am almost certain it's capable of running as low as two ohms, if you were using two subs like I am. I can research this a little further and get back to you but I think it's safe to say can't go as low 1ohm...but don't quote me just yet. [ Tarick  Mar 13, 2015 ]
I have the same mono block amp but it set at 2 ohms and its is pushing my JL 10w6v3-d4 sound good also I install the JL clean sweep which is an Oem integration.. To have the clean crisp sourround sound... [ Alwin  Mar 11, 2015 ]
Send it back and get a better amp, I bought the same amp and I am not impressed at all [ Jerome  Mar 10, 2015 ]
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and help you get it set up. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: Or try our online support center: [ Jeff  Apr 03, 2014 ]  Staff
The JL Audio amplifier's set-screw Power and Ground connections are designed to accept 8 to 4 AWG power wire. The four set-screw speaker terminals will accept 16 to 8 AWG speaker wire. [ Jeff  Mar 17, 2014 ]  Staff