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I have a JBL 125SAT system and three of the five speakers have little to no volume. I know the wiring is good but how do I fix the speakers?

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  • Anonymous Oct 26, 2008

    2 of my 5 dont have sound but i ust thought they were just the surround speakers

  • drw313 Nov 22, 2008

    i have the same problem but cant seem to find a answer any where. please help if you can

  • Anonymous Dec 01, 2008

    we also 2 out off 5 nearly no volume

  • jcan66 Dec 03, 2008

    I have the same system. Can't figure it out but two of the speakers have very little sound. Please share solution.

  • Anonymous Jan 11, 2009




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Posted on Jan 02, 2017

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SOURCE: My Yamaha RX-497 bought 3

damaged yes... fix yes,, well hopefully,, ok frstly it seems you blew an output IC or a filter.. now i dont have a diagram and basically one isnt needed,, you will need some screw drivers, a soldering iron and some solder..and a multimeter if you have one..

  1. open up the unt (unplug it first)
  2. look at where the speaker's connect you will notice it leads to 4 - 8 huge IC's on heat sinks.. close to the heat sinks are a few capacitors (filters) look at them and pray you find one with an oily surface.. If so remove it by soldering it, take it to the shop and get a new one to solder in place.. and then test the system to make sure it works..
  3. IF not a filter then plug in and turn on the unit.. touch every one of the 4 -8 ic's to see which get HOT!!!!!! very hot,, that one is blown (actually will be more than one) again unsolder them,, get replacements and reassemble..
  4. turn on and enjoy!!..

Posted on Sep 17, 2010

  • 91 Answers

SOURCE: No sound in 2 of my 5 JBL sat125a speakers

check your speakers on another source to cancell out if it,s truly the speakers , if not then you could be in stereo mode which would explain the three front speakers ,mains and center working! other then that unplug and reset ,and if not that then their is an internal amp issue with your system , hopefully you can get it working ,if not check your warranty and see if the manufacturer will repair or replace for you , hope i was able to help you ,please leave a nice rating if i was of help thank you Sincerely glenn mayer

Posted on Mar 05, 2009

  • 1 Answer

SOURCE: auto speaker wire diagram

FYI - I just took our 2004 Sequoia in because of speaker rattle coming from the front door speakers. Before I could tell them the problem, they guessed what it was. They see loads of Sequoias and Tundras with JBL systems due to the front door 8in speaker, basically, coming apart. His suggestion was to replace only the bottom 8in speaker, because the top tweeters usually are in good working condition. There is a minimal failure rate on the tweeters.

Posted on Mar 26, 2009

San Martian
  • 7 Answers

SOURCE: Need wiring diagram for jbl system

Go to
They have every vehicle make and model. Plus other wiring conundrums.

Posted on Jul 21, 2009

  • 1 Answer

SOURCE: Have 5 JBL 125SAT speakers but no cable wires or subwoofer

have 5 jbl 125sat but without cables
what can i do?

Posted on Dec 27, 2009

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