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Jl 250/1 no power light or sound. Votage to the amp is good. I tested it off the ground so ground is good to.

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Check the fuse(s). Check that the remote turn on connection on the amp is connected to the remote turn on line of the head unit. When in doubt, you can connect the remote turn on connection of the amp to the +12V connection to see if the amp turns on at all.

Posted on May 07, 2015

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Posted on Jan 02, 2017

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SOURCE: 250/1 powers on but no output

If the amp is not going into protect, the power supply FETs have probably failed. In the corner of the amp near the toriodal transformer, there are 4 FETs against the heatsink. When these fail, the 47 ohm resistors at the base of the transistors often fail. If the resistors are dark, it generally means the FETs have failed. If you disconnect the amp from power and measure the resistance from leg 1 to leg 2 of the power supply FETs, a reading of near 0 ohms indicates the FETs have failed.

Posted on Dec 31, 2007

hawkwatcher
  • 67 Answers

SOURCE: Rockford Amp - When grounded, both power and thermal lights go off

Well This is a interesting problem. In this amp chassis ground and Power supply ground should be the same. With no power applied measure resistance between amp's chassis and Ground terminal of amp. Should be Continuity (low resistance 1-2 ohms or less ) if not you have a burnt ground trace in the amp most likely because amp had poor ground to Ground terminal and was Drawing its current thru chassis or thru Rca Ground which I have seen happed on this amp in the past. F.Y.I I have repaired lots and lots of Rockford amps usually shorted mehsa bar (output / power supply rails) or burnt traces otherwise pretty tough amps. Questions kstahl65@att.net

Posted on Jan 11, 2008

  • 108 Answers

SOURCE: 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.

Posted on Sep 28, 2008

  • 84 Answers

SOURCE: 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

Posted on Jun 14, 2009

Icehockey35
  • 16 Answers

SOURCE: i have a 250\1 JL amp and it stopped putting out

ground, false power supply!

Posted on Jul 02, 2009

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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

I have a jl audio 500/1. I had the amp professionally installed. The amp played for 2 days and no it has no sound but the power will come on. what could be the problem. I have new rca jacks, 4 guage power...


Go back to where you got it installed and ask them to fix it.

If you don't want to do that I would recommend going to another good car audio shop and getting them to check it out.

You can test it yourself by hooking up an iPod to it using a Headphone to RCA cable.. test at low volume first.

Dec 31, 2010 | Jl Audio 500/1 Car Audio Amplifier

2 Answers

I looked up the correct way to wire my JL 13.5W7 1.5. Therefore it said to wire it in parrallel. I understand this will put it at .75 ohm. As I start to turn it up it sounds great, very loud but once the...


1000/1v2 Class D Monoblock Subwoofer Amplifier Specifications:
  1000/1v2

Rated Power:
1000 W RMS @ 1.5 ohm - 4 ohm (11V-14.5V)

THD at Rated Power:
<0.05% @ 4 ohm

S/N Ratio:
>95dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)

Frequency Response:
5 Hz - 250 Hz (+0, -1dB)

Damping Factor:
>500 @ 4 ohm / 50 Hz


According to the chart your amp is only stable down to 1.5 Ohms, so running at .75 Ohms the noise you are hearing is the amp clipping (running more power than it can handle at low ohms)
I would suggest wiring it in series, or you could adjust the gain on the amp until the popping goes away.

Hope this helps.

Nov 10, 2010 | Jl Audio 13W7 Car Subwoofer

3 Answers

I have 2 jl audio 12w6 and one jl audio 500/1 amp, and the speakers make a weird noise..sounds like the voice coils are bad..so my question, is there any way i can fix them or i need new speakers?


yeah you can always take it back to your local JL audio dealer, i wouldnt do it your self unless you done it before and got it down like a ****. A lot of people i know tryed and always ending up tossing it out.....

May 07, 2010 | Jl Audio 12W6 Car Subwoofer

1 Answer

Jl audio 250/1 amp


This could be due to multiple things. First I would run a test light to the speaker leads of the amp as if you were running your speaker...it should light up and blink to the sound of music coming through. If no sound then most likely your RCA cables are bad or input jackets on the amp are loose and be shorting out causing the low light to come on. If you know 100 percent that you bought that amp in good running condition then most likely its something simple like the RCA wires are bad..Hope this kind of helps you out.

Feb 21, 2009 | Jl Audio 250/1 Car Audio Amplifier

1 Answer

I HAVE A JL AUDIO MONOBLOCK AMP 250


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

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

Help


Check the earthing of the amp is adequate. It sounds like the amp is floating without an earth until you earth the rca outer.

Apr 11, 2007 | Jl Audio 250/1 Car Audio Amplifier

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