JL Audio JX500/1D

Mono subwoofer amplifier — 500 watts RMS x 1 at 2 ohms

Item #: 136JX5001D

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Lots of power from a very small box

JL Audio's JX500/1D mono amplifier will power your subwoofer with up to 500 watts RMS, so you can experience thunderous bass in your music. A variable low-pass filter and bass boost help you tune your sub to fit your system and sound its best. An optional remote level control lets you turn the sub up or down from the front seat.

JL Audio's JX500/1D mono subwoofer amplifier

Compact, but beefy

You know you're holding a serious piece of sound equipment when you feel the heft of this tiny JX amp. JL Audio built it 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 high-mass aluminum heatsink keeps things cool enough to virtually eliminate thermal shut-downs.

Product Highlights:

  • mono subwoofer amplifier
  • 300 watts RMS x 1 at 4 ohms (500 watts RMS x 1 at 2 ohms)
  • Class D amplifier design
  • MOSFET switching power supply
  • frequency response: 10 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 50-amp fuse recommended — wiring and hardware not included with amplifier
  • no onboard fuses — when installing multiple amps in a system, an additional 50-amp in-line fuse between the distribution block and the amplifier is recommended
  • 7-7/8"W x 2-1/8"H x 7-11/16"D
  • warranty: 2 years
  • Our 60-day money-back guarantee

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.

Hands-on research

What's in the box?

Download owner's manual

  • Monoblock subwoofer amplifier
  • 10" Speaker-level harness
  • 4 Mounting screws (M4 x 18mm)
  • 4 Flat washers
  • 2.5mm Allen wrench
  • Owner's Manual (En/ Ger/ Sp/ Fr)

Product Research

Features
Controls
Connections

Features

Monoblock Amplifier: The JL Audio JX500/1D monoblock subwoofer amplifier that has been optimized for low-frequency (10-150 Hz) amplification of connected subwoofers.

Note: The JX500/1D is not designed for driving full-range speakers, midrange drivers, or tweeters.

Class D Amplifier Circuit: The JX500/1D employs an advanced Class D switching design that allows it to produce 500 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:

JX500/1D Amplifier Specifications Ohms Watts
Rated Continuous (RMS) Power @ 14.4V
(10-150Hz, 90dB S/N, 1% THD+N)
300
400
500
Rated Continuous (RMS) Power @ 12.5V
(10-150Hz, 90dB S/N, 1% THD+N)
235
300
410

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 JX500/1D'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 JX500/1D 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 JX500/1D is equipped with an RJ-25 connection for an optional wired RBC-1 Remote Level Control (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. A 2.5mm hex-wrench is supplied for tightening/loosening the set-screws.

  • Power and Ground: The JL Audio amplifier's set-screw Power and Ground connections are designed to accept 8 to 4 AWG power wire.
  • Remote Turn-On: The JL Audio JX series amplifier's set-screw turn-on lead will accept 18 to 8 AWG  wire.
Note: The amplifier is not equipped with a fuse. An external 50-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 50-amps, the original should be replaced with a 50-amp fuse.

Speaker Output Terminals: The JL Audio JX500/1D 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 tightening/loosening the set-screws.

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 JX500/1D 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 JX500/1D 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 JX500/1D incorporates a pass-through preamp output sections, so that additional amplifiers can easily be connected to the same signal feeding the monoblock amplifier. The preamp output signal is buffered to prevent noise.

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.

JL Audio JX500/1D Reviews

Average Customer Review:

18 reviews
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AWESOME SOUND!

Written By JoeS, Erie, PA on Saturday, October 18, 2014

Crutchfield Customer Review (What's this?)

This is an awesome amp to run a subwoofer. I have it paired with the JL Audio CS112RB-W3v3 PowerWedge (running at 2 ohms). I also have the bass knob installed. This thing THUMPS HARD! It includes a built in crossover and bass boost. Looks great was very easy to install. Got a 4-gauge amp install kit from Crutchfield with the order. The bass hits low like with Brandy's I Wanna Down or EPMD's So Whatcha Sayin. VERY low and doesn't bottom out. Yet all other kinds of music like rock and country sound great. I couldn't be happier.

Pros: Quality name, easy install, powerful, built-in crossover.

Cons: None

Awesome Little Amp

Written By Bobby, Hampton, VA on Thursday, September 25, 2014

Crutchfield Customer Review (What's this?)

Great amp with a very small footprint. Fights perfect under my drivers seat of my 02 Lightning.

Pros: Plenty of power in a small package.

Cons: None

JL JX 500/1

Written By Luke, Calgary, AB on Friday, September 19, 2014

Awesome amp!! Paired with JL 10w3 and it's perfect for my car! Once you tune the amp you will be amazed by the output!

Pros: Small and powerful

Cons: Can be a little tedious to tune but absolutely worth it

JL Audio JX500/1D

Written By Anonymous, Spencerville,Ohio 45887 on Friday, September 05, 2014

Crutchfield Customer Review (What's this?)

Awesome

Pros: True power

Cons: None

Really nice amp

Written By Mike, Fort mill sc on Wednesday, August 20, 2014

Crutchfield Customer Review (What's this?)

Installed this into my wife's 2014 honda accord with two JL 12's. Really matches speakers perfect. Very nice amp for a good price.

Pros: Small, sleek looking, easy to mount and install. Powerful for its size.

Cons: None

Works great with my JL 10W3V4

Written By Johnny D, California, Modesto on Sunday, March 23, 2014

Crutchfield Customer Review (What's this?)

Small amp that packs a punch.

Pros: Compact Amplifier Easy to Install

Cons: No issues

You get what you pay for

Written By GW, The Texas Panhandle on Wednesday, February 26, 2014

Crutchfield Customer Review (What's this?)

A perfect amp for running a subwoofer, JL Audio is as good as everybody says. You can rock all day and it comes back for more every time.

Pros: Simple, elegant, efficient, reliable

Cons: Ain't cheap

Very surprised for its size

Written By E, Kingston, NY on Friday, February 21, 2014

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

I have to be honest, I am a solid novice when it comes down to high quality audio - but I am learning very quick. Recently starting playing HD music files and deleted all my MP3's. I have two Orion HCCA 10" Dual 2 Ohm subwoofers that are now powered by this little amp. This is amp is about a third of the size of the original amp I had installed and this JL amp is just as, if not a little more, powerful than the previous amp (not a JL). Such a breeze to tune and really seems to have cleaned up certain songs that have a very distinct bass line. I have my entire system set up mostly for best sound and not extreme bass, and this amp will run very cool for very extended times. Really recommend JL Audio for everyone looking for serious quality, and a seriously under rated amp. Don't be fooled by some other companies "peak" outputs.

Pros: Runs cool, easy to tune, very small and easy to install almost anyway. Probably could have put this in my glove box

Cons: Honestly it's hard to think of a negative yet, I have owned this amp about 6 months and still haven't had an issue.

Great amp

Written By JR, OKC, OK on Wednesday, November 13, 2013

Crutchfield Customer Review (What's this?)

Great purchase but had a problem with the amp (red light). It happens and Crutchfield was great. I called with the issue was not on placed hold and the technical adviser was professional and thorough. Got a replacement in four days. It is pushing my JL Audio Stealthbox (10 inch). Plenty of power with no clipping (provided you have properly tuned the intensity as per JL Audio instructions).

Pros: Small, compact, clean power

Cons: none

A lot of power in a little package

Written By C, Hilo, HI on Tuesday, October 15, 2013

Crutchfield Customer Review (What's this?)

This amp is great. It has a lot of power but is still small enough to fit just about anywhere.

Pros: Great power in a compact size.

Cons: Didn't come with an level knob; I had to buy it separately

Exactly what you expect fromJL

Written By ChrisP, Bay Area, CA on Sunday, October 13, 2013

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

Bought this amp to pair with a JL cp108lg-w3v3. I was considering the Alpine 500/1 but decided that the additional features and JL quality were enough to justify the extra cost. Mounting is a breeze and the power output is more than enough to power my sub. I am running through the stock stereo in my '13 Toyota tundra so the sound quality isn't exactly what you would get with preamps and a real EQ but the amp pushes the sub great. I would recommend this amp to anyone who has the money to spend on it. JL does it again.

Pros: More features, build quality, doesn't over heat.

Cons: Full retail prices

JL Audio JX500 1D WOW

Written By 9417200710, Ellenton, FL on Sunday, September 08, 2013

I have this amp pushing 2 Alpine SWE 10S4 subs in the trunk of a new Camaro with the stock radio head receiver, and this small amp has big power and a great deep clean sound. I had other comparable amps in the car as far as power output and this amp blows them away. I am using a Audio control line converter because I am using the stock receiver and this amp sounds great with power to spare, and if you like it loud this amp will provide it while keeping the bass clean.

Pros: Small size for vehicles with low space

Cons: none

Great Littie Amp!

Written By L. Harris, Ohio on Friday, April 12, 2013

To save space in my '12 Mini Cooper Countryman, I had this amp installed with a remote knob (JL Audio RBC-1) and it sounds great! For now I have it connected to a Kenwood KFC-W3013PS 12" Sub, I plan on replacing the 12" with the JL Audio CP108LG-W3v3 which should will fit nicely under the fold flat floor. The current setup is LOUD!! After my poor ears had had enough, turned down the gain to about 1/4 and it is still impressive.

Pros: Small Size, Powerful

Small but Powerful

Written By JHarris, Woodbridge va. on Monday, March 04, 2013

Crutchfield Customer Review (What's this?)

I got this amp to match my 500rms stealthbox. Although at this time it is installed without a true tune. It has most definitely met and exceeded my expectations. What can I say, it is JL we are talking about.

Pros: Small, easy install, not overly expensive. And to date no overheating.

Cons: None so far.

Quality in a small package

Written By Josh, Tyler, TX on Monday, October 15, 2012

Crutchfield Customer Review (What's this?)

Build quality is excellent. Sound is excellent.

The amp is under my seat, and powering one 10 inch JL dual coil under 2 ohms and is loud and crisp.

Pros: Small Cool Powerful

Wow!

Written By Rob in Florida, Palm Harbor Florida on Saturday, October 06, 2012

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

Just had this amp installed and it sounds great! Have it pushing a JL Audio Stealth box loaded with a 10" W1v2 subwoofer. If you own a 2005 or newer Nissan Frontier crew cab then you know there isn't much room for amps. This amp fit under the front passenger seat like it was custom made to go there. Very nice solid construction and the sound quality so far is outstanding. The sub already sounds amazing and it is not even broken in yet. This sub is rated at 300 Watts RMS @ 4 ohms, but my car audio guy, who also is a JL reseller said they often under rate the RMS power on their amps. So this amp is more than enough to get the most out of the JL sub. I am running this off a Pioneer AVH-P3400BH head unit, a pair of Phoenix Gold TI65CS 6.5 Inch Component Speakers up front and Phoenix Gold TI65Cx 6.5 Inch Speakers in the rear doors powered by a Phoenix Gold SD500.4 500 Watt 4 Channel Amplifier (also purchased for its small size and superior performance) I wanted to match amp brand to speaker brand for the door and sub because I had heard this gives you better overall sound and I can tell you when I heard this system for the first time it was like I was sitting in a professional music studio, the sound quality was that amazing. This amp delivers outstanding lows and the articulation is incredible. I listen to rock, blues and now I am even listening to hip hop as it sounds so good on this system. The Crutchfield guys and gals were wonderful as always.

Pros: Small size, very powerful, nice looking and contructed well. It's a JL so you know you are getting a qaulity product. Runs cool.

Cons: High price, no gain control, the Signal to Noise Ratio @ 62 dB, which is low to the usual 80 to 90+ you see on other mono amps had me a little worried but so far not an issue.

Best sub amp ever!

Written By wk_music, Salt Lake City on Tuesday, September 11, 2012

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

This thing is a little beast! I have it running 2 JL 10 inch subs and I can't believe the low end this amp puts out. My friends all swear I have 12's. I had an Alpine running the subs before this, same wattage, sounded horrible compared. Bass sounded so thin compared to the JL. I am sold on this amp, I can't wait to drive everywhere now so I can listen to my music. Very impressed.

Pros: Tiny amp, can put virtually anywhere. Runs cool. Easy install.

Cons: None, literally.

Sounds Awesome Matched With JL Speaker

Written By Saint James, Inc., New York on Friday, July 06, 2012

Crutchfield Customer Review (What's this?)

I have this matched with one JL Audio 10W3V3 installed in a Q Logic Carbon Fiber Rear Door Enclosure in my Jeep Wrangler and the articulation is incredible. I've compared it to a Sony XM1S which was plenty loud but not as punchy. I also tried an Alpine MRX-M50 which was decent too but kept cutting out. Although these three amps are in the same class, the JL JX 500/1D stands out and lives up to it's reputation. I have it dialed in at 200 LPF and I'm hearing bass drums and low strings I wasn't hearing before. In my car, the dials are set flat at 0 DB and it is really clean. I should also mention that I have a Kenwood MP342U as the controller with the LPF bypassed. on the head unit. Everything purchased here at Crutchfield - Couldn't be happier...Except if it was actually manufactured in JL's Florida facility like their other products.

Pros: Very precise LPF EQ. Clean Loud Power, Runs Cool. Solid. Small and easy to install.

Cons: Made in CHINA!

Get everything you’ll need to enjoy your new JL Audio JX500/1D

Bring the music from your amp to your speakers.
Patch cables take the music from your stereo to the amplifier. Most amp wiring kits don't include them.
Add a remote and control your amp from the driver's seat.
Get a spare fuse now so you won't be listening to silence later.
For multi-amp systems, you'll need a separate fuse holder.
Helps protect your car's charging system and improves power handling. Required power and ground wires not included with cap.
The right tools will make the installation easier.
Have your new amplifier put in by a qualified professional in your area.
T-Spec V10-RAK4

T-Spec V10-RAK4

4-gauge amplifier wiring kit — includes 2-channel patch cable

Item #: 120V10RAK4

(1)

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Rockford Fosgate RFK4X

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Complete 4-gauge amplifier wiring kit
Includes patch cable and speaker wire

Item #: 575RFK4X

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EFX PA4BX Wiring Kit

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4-gauge amplifier wiring kit — includes 2-channel patch cable

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Kicker CK4

Kicker CK4

Complete 4-gauge amplifier wiring kit — includes 2-channel patch cable and speaker wire

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Lightning Audio LA-4i

Lightning Audio LA-4i

4-gauge amplifier wiring kit — includes 2-channel patch cable

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T-Spec 4PK Installation Kit

T-Spec 4PK Installation Kit

4-gauge amplifier wiring kit — includes speaker wire

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Rockford Fosgate RFK4

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4-gauge amplifier power wiring kit

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Kicker PK4

Kicker PK4

4-gauge amplifier power wiring kit

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$129.99
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T-Spec 16-gauge Speaker Wire

T-Spec 16-gauge Speaker Wire

Black/white jacket — priced per foot

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T-Spec 12-gauge Speaker Wire

T-Spec 12-gauge Speaker Wire

Black/white jacket — priced per foot

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Stinger PRO Series Speaker Wire

Stinger PRO Series Speaker Wire

Priced per foot (16 Gauge)

Item #: 541SPW516B

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T-Spec 2-Channel RCA Patch Cables

T-Spec 2-Channel RCA Patch Cables

Available in 7 different lengths (20-foot)

Item #: 120RCA202

(27)

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EFX 17-foot RCA Patch Cable

EFX 17-foot RCA Patch Cable

Item #: 142A17C

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EFX 2-Channel RCA Patch Cables

EFX 2-Channel RCA Patch Cables

Reference Series Multi-Core RCA patch cables — available in 5 different lengths (12-foot)

Item #: 142RR12

$19.95
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EFX 2-Channel RCA Patch Cables

EFX 2-Channel RCA Patch Cables

Core Series Twisted RCA patch cables — available in 5 different lengths (12-foot)

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EFX 2-Channel RCA Patch Cables

EFX 2-Channel RCA Patch Cables

Elite Series Braided Multi-Core RCA patch cables — available in 5 different lengths (25-foot)

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JL Audio RBC-1

JL Audio RBC-1

Remote bass control for JL Audio amps

Item #: 136RBC1

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$34.99
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Rockford Fosgate RFFM60 MAXI Fuse

Rockford Fosgate RFFM60 MAXI Fuse

Pair of 60-amp platinum-plated wafer fuses

Item #: 575RFFM60

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Rockford Fosgate RFFAGU Fuse Holder

Rockford Fosgate RFFAGU Fuse Holder

Platinum-plated AGU fuse holder
Fits 4- or 8-gauge cable

Item #: 575RFFAGU

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$10.99
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T-Spec Capacitor

T-Spec Capacitor

1.5-farad capacitor with red LCD meter

Item #: 12015DDC

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$79.99
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Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6NGL

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Metra Crimp Tool and Connectors

Metra Crimp Tool and Connectors

Package contains crimp tool and over 150 pieces

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S&G Wire Cutter/Stripper Tool

S&G Wire Cutter/Stripper Tool

Cuts and strips 12- to 22-gauge wire

Item #: 18119100

(17)

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Pro.Fit Wire Worm

Pro.Fit Wire Worm

Installation tool helps route wiring through tight spaces

Item #: 042DM4533

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S&G Tool Aid 87650

S&G Tool Aid 87650

Door Trim and Panel Removal Tool

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Pro.Fit Trim Panel Tool

Pro.Fit Trim Panel Tool

Remove your vehicle's trim panels without damage

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Spec Tools SQR-200a Squeeze Wrench

Spec Tools SQR-200a Squeeze Wrench

Narrow space ratchet kit with 18 sockets

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Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

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Install Bay IB35400

Install Bay IB35400

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Install Bay 3320

Install Bay 3320

Auto-ranging digital multimeter

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DEI Heat Shrink Tubing

DEI Heat Shrink Tubing

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InstallCard: Amp or Equalizer

InstallCard: Amp or Equalizer

Prepaid professional amplifier or EQ installation

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Autosound 2000 Disc One

Autosound 2000 Disc One

Low Frequency Test CD (Disc One)

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Questions & Answers Ask the community. Share your knowledge.

3 questions already asked

if I understand correctly those have a 300rms. x 2 would be 600 rms this amp is 500w. plus its a mono. my thoughts are it wont be enough. I run this amp with the jl audio stealthbox for the colorado crew cab which has the 10w3v3 with 500rms. sounds awesome, but my ears want a ported box... but thats just me. [ JASON  Sep 16, 2014 ]
I'm not sure. What I would do is go to Crutchfield's website and pullup one of those subs. Check the specs on it and see what the nominal power rating is and multiply that times two. William [ William  Sep 11, 2014 ]
It will power them but you may find distortion at higher output levels because it's not pushing enough rms power for 2 JLw3s . I'd look at at least a 750 or 1000 [ SPENCER  Sep 11, 2014 ]
It should Brian, this little things pumps out a strong 500w with no problem. I've had mine for a few years now and it's as good now as it was new. [ CHRIS M  Sep 11, 2014 ]
Hello and yes you do need it i have mine that way. [ EVERARDO  Jun 26, 2014 ]
A converter is not required. This amplifier comes with an additional wire harness that you can hook up your high level output (factory speaker wires) into without a problem. And it also has an RCA output if you were to add an additional amplifier later. [ ALAN A  Jun 26, 2014 ]
No you do not need a line output converter. The required wiring comes packaged with the amp to allow you a direct connection to your factory head unit via the speaker outputs of the radio [ ANTONIO  Jun 26, 2014 ]
What speaker wire outs do you use to hookup one sub? [ chris  Apr 24, 2014 ]
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. 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  Feb 01, 2014 ]  Staff