Question about Jl Audio 250/1 Car Audio Amplifier

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Jl amp i have a 250/1 monoblock amp. when i hook it up to my jl 10" subs and turn the power or the volume up, it turns the power off for about a second and then the amp comes back on. it seems to trip off like a relay is over heating or something. if the volume is low or the gain is turned way down, it won't shut off. i also tried another amp on this same system and it works fine turned up the whole way.any help would be great.

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Re: jl amp

The overload protector of your unit it so sinsitive try to cutof the overload relay and then observe 20 min. monitor the allominum heatsink the temp. normal

Posted on Sep 19, 2007

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Jl 1000.1 Bottoming out my sub at very low volume...i have a 1000d cross fire mono block that POUNDS my sub and doesnt bottom it out.. but when i hook up the JL i get to quarter volume and the sub starts...

Check The Settings On The Amp.... There Is Probably a Setting Turned All The Way To Max on it. Is There 2 Rca Cables Hooked to It ? Try Switching them around And Seeing if It Gets Better Or Un Plug one of them And See if It Gets Any Better, Would Definitely Check The Settings On The Amp First to See if That your Problem. Hope This Helps :-)

Mar 10, 2011 | Jl Audio 1000/1 Car Audio Amplifier

1 Answer

1 10 jl jl 250/1 mono block amp cuts off an on help

your subwoofer is wired incorrectly to your amplifier. Figure out which ohm load of subs you have and then what ohm load options your amp is stable at. Next go to either the Crutchfield website. find their learning center. go to subwoofer wiring diagrams. or go to and find their section on it

Jun 11, 2009 | Jl Audio 250/1 Car Audio Amplifier

1 Answer

Jl 500/1 amplifier will not turn on

you may have burned the channel you were using..try taking the cover off the amp and checkin for burned spots or any wires that may be loose or touching within the amp.

Feb 24, 2009 | Jl Audio 500/1 Car Audio Amplifier

1 Answer


It indicating that the power output is too loud and possibility of speakers may get damaged if played at this volume for long periods. When the loudest sound is played the led light mightshow its loosing its brightness and dims in time with the sound level.......................sodeep

Jan 17, 2009 | Jl Audio 500/1 Car Audio Amplifier

2 Answers


there could b allot of factors involving this problem first could and most important is to make sure theres no loose connections in your wiring and find out how ur subs are wired in. are they SVC or DVC (single and duel voice coils) also what are theyre impedences if SVC could be 2, 4, or 8 also the same as DVC but jus 2 sets of terminals. find out first then the reason i ask is cause allot of half way manufactures are installing a device u could say that will cause amps to automatically cut off when the load on the amp reaches its lowest impedence load so when ur subs are moving in and out that load varies with how far the sub is extending out jus cause a sub say its a 4 ohm SVC doesnt mean that when its pounding away the load may actually be 3 ohm when fully extended. find out these variables first and then reply and ill let u know what to do properly.

Jan 16, 2009 | Jl Audio 250/1 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

Jl audio 250/1

ok what is the amp out put of your altanator and were did you hook the romte turn on wire two. It is usally blue.

Jul 20, 2008 | Jl Audio 250/1 Car Audio Amplifier

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Added another amp to system now subs dont hit as hard

This sounds odd, but try putting your subs out of phase from the mains. Just see if it changes anything.

Feb 16, 2008 | Jl Audio 250/1 Car Audio Amplifier

2 Answers

Jl amp

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp and the head unit on (so the amp will have remote voltage applied), touch the red lead to the B+ terminal of the amp. If the voltage drops below ~11 volts, you need to check the wiring for the B+ line to see where you're losing voltage..

You need to do this as the amp shuts down. Connect the meter and watch the voltage as someone increases the volume.

Dec 31, 2007 | Jl Audio 250/1 Car Audio Amplifier

1 Answer

Sealed subwoofer box with two 10" jl audio subs hooked up to jl audio 250/1

you mite have the gain to high turn it down a bit just because there's a max gain doesn't mean you need to use it . you mite have to turn the bass boost up. you should get a bit better sound out of it

Dec 12, 2007 | Jl Audio 250/1 Car Audio Amplifier

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