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JL Audio JX1000/1

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

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  • JL Audio JX1000/1

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  • JL Audio JX1000/1

  • JL Audio JX1000/1

  • JL Audio JX1000/1

  • JL Audio JX1000/1

  • JL Audio JX1000/1

  • JL Audio JX1000/1

  • JL Audio JX1000/1

  • JL Audio JX1000/1

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Our take on the JL Audio JX1000/1

by Buck Pomerantz
JL Audio

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

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.

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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

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Performance
RMS Power Output (Watts x Channels)
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500 x 1
Peak Power Output (Watts x Channels)
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N/A
Power at 2 Ohms (Watts x Channels)
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1000 x 1
Bridged Power (Watts x Channels)
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N/A
Minimum Impedance Bridged
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N/A
Minimum Impedance Unbridged
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2
Best Frequency Response
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20-150 Hz
THD at Rated RMS Power
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1%
Signal to Noise Ratio
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75 dB
Input Voltage
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14.4v
Features
Amplifier Class
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D
Low-Pass Crossover Frequency
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50-200 Hz
Low-Pass Slope (dB/octave)
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12 dB/octave
High-Pass Crossover Frequency
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N/A
High-Pass Slope (dB/octave)
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N/A
Bass Boost
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0-12 dB
Bass Boost Frequency
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45 Hz
Fan Cooled
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No
Fuse Rating
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80
Speaker Level Inputs
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Harness
Preamp Outputs
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1 pair
Width (inches)
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11-5/16
Height (inches)
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2-1/8
Depth (inches)
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7-11/16
Parts Warranty
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2 Years
Labor Warranty
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2 Years
Product Research
What's in the box?

Download owner's manual

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

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 open the box, verify contents, 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.

Features
Controls
Connections

Features

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.

Controls

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.

Connections

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.

 
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JL Audio JX1000/1 Reviews

Average Customer Review:

7 people say:

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Filter by rating:
5 out of 5

Cant go wrong

Written By Joe, Cedar Springs, Mi on Sunday, March 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.
Was this review helpful?    Yes | No
 
5 out of 5

Great product

Written By Brady, Yuba city on Sunday, March 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
Was this review helpful?    Yes | No
 
4 out of 5

good amp if two ohms is what your looking for

Written By car audio fanatic, garden city mi on Sunday, December 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
Was this review helpful?    Yes | No
 
5 out of 5

Whhoop go JL

Written By VWBRO, naptown, indiana on Friday, August 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
4 out of 5 people found this helpful
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5 out of 5

This little amp knocks! Power to spare

Written By MikeT, Phillipsburg NJ on Wednesday, July 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
3 out of 4 people found this helpful
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5 out of 5

Awesome

Written By Cliff Wilson, East Texas on Saturday, March 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.
9 out of 12 people found this helpful
Was this review helpful?    Yes | No
 
4 out of 5

JL Audio JX 1000/1

Written By Cliff, East Texas on Friday, February 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).
3 out of 43 people found this helpful
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2 questions already asked

What's the best way to tune the amp? [ Javier  Apr 02, 2014 ]
1 answer
  • 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: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/. [ Jeff Staff  Apr 03, 2014 ]
What is the maximum gauge of wire will this amp accept? [ Keegan  Mar 15, 2014 ]
1 answer
  • 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 Staff  Mar 17, 2014 ]

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For a more in-depth review and enhanced detailed information on the JL Audio JX1000/1, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_136JX10001/JL-Audio-JX1000-1.html ).