Question about Jl Audio 300/4 Car Audio Amplifier

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JL 500/1 i have a JL500/1 I DONT NO HOW 2 FIX I CAN HOOK IT UP THE green light will come on i put the psitive speaker wire in then when i put the negative speaker wire n the amp it wont work unless i split the negative speaker wire n put half of it n the negative channel n half of it touchin the amp i really never herd anything like that

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Re: JL 500/1

It sounds like you have a broken output filter inductor in the amplifier. You should be aware that the speaker outputs of the amp are biased at ~40v DC and can give a good shock if you touch the speaker wire while you're grounded (touching the body of the vehicle).


When you connected the speaker as you did, I would have expected the speaker to move in or out and remain there while the wire was connected to the housing of the amp. I'll assume that the amp was screwed down to the chassis of the vehicle. If it wasn't, you may have more than one problem.

Posted on Oct 18, 2007

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Wireing jl 500/1 to dvc sub

You will have to take a piece of speaker wire and put it from the positive of one voice coil to the negative of the other voice coil.....Then, with the other remaining positive and negative, hook it up to the amp.....And your good to go....If your still confused, get back to me....hope that helps.....

Mar 24, 2012 | Jl Audio 500/1 Car Audio Amplifier

1 Answer

I have a jl 500/1 amp hooked up in my car and the power light comes on for about 5 seconds then turns off. no sound out of the subs. it is hooked up to a factory deck through a high to low level converter....

hook up the remote wire ( or make sure its hooked up good) check your ground! ground wire not big enough awg wire and put on bare metal not more than 1 foot away from amp. bad ground will cause this.

Sep 12, 2011 | Jl Audio 500/1 Car Audio Amplifier

1 Answer

Installin car systems

you dont want to connect both of those amplifiers together. You could run them separately to separate subs or the jl to your sub and your alpine to your front speakers. But you dont ever want to mix and match amps to the same sub. Even if you had 2 jl500/1's you wouldnt want to just hook them up together. Because they both have to be putting out the exact same amount of power. Which no 2 amps are ever exactly the same. Some companies make bridges to properly connect 2 exact amps together. I Hooked up 2 JL 1000/1's to each voice coil on a 13.5 W7 and i smoked the sub. So i definitely dont reccommend doing it unless the amps are conneccted to separate things.

Apr 28, 2010 | Jl Audio 500/1 Car Audio Amplifier

1 Answer

I hookd my jl 500/1 up i like it louddd but the bass goes in and out??? can you help .

is there a green light? does it go red? the unit could be auto-protecting from your speakers, are they old speakers?

Feb 07, 2010 | Jl Audio 500/1 Car Audio Amplifier

1 Answer

JL Audio 500/1 Amp, The green power light is on but no sound!

Check to be sure you are on the correct outputs on the head unit, and be sure the outputs do not have a separate volume control.

Mar 06, 2009 | Jl Audio 500/1 Car Audio Amplifier

1 Answer

I bought a 500/1 jl audio amp and also a w7 10 sub

if its cutting off and right back on then check your ground and your power wire makes sure both are connected good and none of your fuse's are blown, either that or you got a wire hooked up backwards in the sub.. but my guess is that the sub is hooked up wrong... that sub should be hooked up in a series or in parallel,

ok if your running just one speaker, it should be hooked up like this and 2 speakers are a different way...

this is parallel :pos to pos , neg to neg, then one wire coming from pos on sub to pos on amp then neg on sub to neg on amp but bridge the amp on your amp should be 2 pos and 2 neg in two different channels take the pos off the sub into the pos on 1 channel and then the neg from sub to the neg on the other channel,

this is series : on the sub it will go pos to neg then the other neg and pos will go to the amp, but make sure the pos and neg r on different sides of the sub, dont hook them both to the same coil

if your need more help give me your email and ill send you a pic of how to do it...

Aug 12, 2008 | Jl Audio 500/1 Car Audio Amplifier

2 Answers

500/1 problem

Hi i wish to help u but i will need more info on the type of subwoofers u want to use -are the DVC-or single ...are they 8ohm or 4ohm speakers?

Jun 22, 2008 | Jl Audio 500/1 Car Audio Amplifier

1 Answer

Jl 500/1

Nine times out of ten if the amp smells burnt it usuallly is. Your best bet is to hook another amp to your system and see if you get sound.

Jan 30, 2008 | Jl Audio 500/1 Car Audio Amplifier

1 Answer

My JL subs just dont beat like the ONES IVE HAD before as well as the ones my friends have had

sounds like they have your sub amp in mono but they put the speakers in series which totally cancels the benefit of running your amp in mono. you will probably be happier if you just hook the left speaker to left plus and minus and the right to right plus and minus. Cuz even though subs aren't directional they do pass some higher frequencies that are and that dilutes the stereo effect.

Jan 19, 2008 | Jl Audio 500/1 Car Audio Amplifier

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