Question about Jl Audio 250/1 Car Audio Amplifier

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The thermal light on my JL AUDIO 250/1 car audio amplifier is blinking, even after I have shut the veichle off for hours. HOw can I resolve this?

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Try to pull the fuse....may reset the amp...but more than likley there has been some kind of internal damage ....ie... water damage or bad speaker connected etc....

Posted on Aug 24, 2010

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My amp gets shutting down after working a few hours and get restarted automatically,why is it so? Thanks in advance, Anoosh K.A


Because your amp is overheating. The transistors are attatched to the heatsink inside the amp. Alongside these transistors is a sensor that shuts down the amp when it reaches a certain temperature. A very easy repair. Clean up the old paste and add new thermal paste.

Aug 11, 2013 | Jl Audio 500/1 Car Audio Amplifier

1 Answer

Have a jl audio 500/1 the red light blinks and no other light turns on. whats the problem with it?


I think you might have your remote turn on from your deck to amp hooked up wrong check that out!! I not are you familliar with the mr. butterworth crossover JL developed for that series of amp? Just like its big nrother the 1000x1 class D the built in smart crossover has many built in pretect modes. If your subs are drawing to much power it shuts down if they draw to little of ohms or to many but that 500 is 1 ohm stable so download the crossover settings from JL and go from there

Apr 28, 2012 | Jl Audio 500/1 Car Audio Amplifier

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

2 Answers

JL Audio 500/1 Amplifier "Thermal" light flashing


Re-check all the connections to the speakers, The uPC monitors all the outputs and if any are taking more power than they should, the uPC shuts the amp down to protect the internal components. Don`t use tape joints alone, try to run the cable the full length without any joints. If you do have to piece the wires together, solder them and stagger the connections, in other words, make one lead shorter than the other so that if the tape does come off, the offending connection is well away from the other so they can never meet or connect to each other. Ian

Jul 24, 2009 | Jl Audio 500/1 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

My jl Auido 250/1 amp


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.

Sep 27, 2008 | Jl Audio 250/1 Car Audio Amplifier

1 Answer

Sub makes loud noise when car is shut off


Does it make noise if the RCAs are unplugged? If not, the RCA shield on your head unit may be burned open.

If the amplifier is set to signal sense, it will take longer for the power light to go off.

Nov 13, 2007 | Jl Audio 250/1 Car Audio Amplifier

1 Answer

Help me


It sounds like your running the amp to hard (gain too high) or on an impedance lower than 1.5 ohm. What type of subwoofer are you running? voice coil? how far around is the gain setting? e mail me a j_impala@hotmail.com if you like.

Nov 08, 2006 | Jl Audio 500/1 Car Audio Amplifier

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