Question about Jl Audio 250/1 Car Audio Amplifier

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My jl Auido 250/1 amp

I have a jl audio 250/1 amp it powers up but no sound comes out i have changed the rc cables and checked the wireing on the subs and they r good but the protect light is not on tho only light that is on is the power light

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You may have a bad output on the amplifier. I would recommend taking it to a local electronics repair to have fixed, or visit a local stereo shop - preferably a JL Audio dealer. Visit their website at www.jlaudio.com to find a dealer near you. You can have your amplifier sent in to JL Audio for repair by an authorized dealer and you'll get a warranty on the repair work.

Posted on Sep 28, 2008

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Posted on Jan 02, 2017

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1 Answer

I have a Jl Audio 250/1 mono block amp and the thermal light keeps coming on what could be causing this?


It could be a number of things? 1 to many subs, speakers wired to the amp causing it to overheat and making the thermal light come on. 2 It all depends were your amp is. If it's clear and nothing covering it, obstructing it, Ie sub in front of it, amp inbetween the rear seats and sub.

Mar 04, 2011 | Jl Audio 250/1 Car Audio Amplifier

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My amp only powers on it gives no power to my subwoofers


1st check to see if the RCA's are plugged in if they are make sure the speakers are plugged in. Check at the amp and at the sub Alson check the input voltage switch. JL Audio Slash series amps have a high/low switch for your input voltage. And the last thing I can think of is if your using a remote wire to turn the amp in make sure the signal sensing switch is off. If your not using a remote wire turn it on....Hope this helps

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maybe it dont have enough to push it ,,did you try it before you buy it?

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you should move up to more power....underpowering subs is bad! try not to go under the subs rms by 5o watts?

Jul 02, 2009 | Jl Audio 250/1 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 www.the12volt.com and find their section on it

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

3 Answers

Jl audio 250/1 thermal light


Disconnect all speaker wires from the amp and disconnect the RCA cables from the amp. If it still goes into protect mode, use a multimeter to confirm that you have 12v on the B+ and remote terminals. Place the black meter probe on the ground terminal of the amp when measuring the voltage. If the voltage is sufficient and the amp goes into protect, it will have to be repaired. JL only accepts repairs from authorized dealers. You'll have to find one in your area or you'll have to find a repair shop willing to work on JL amps.

Let me know if you have any other questions.

Oct 15, 2008 | Jl Audio 250/1 Car Audio Amplifier

1 Answer

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

1 Answer

No sound


as u have speakers with u u connect another speaker in to the sub connection and reduce the volume to min and check if sound is coming use another wire to connect the speaker to the amp and if it is working u check the cable then the sub it would have burned off due to some internal problems and it has to be checked by a technician this problem may be due to wire broken or something like that

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could be low current ,disconnect all power including ground for 20min N.B most amps will seem to be shorted at output but this is normal due to damping ratio.

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