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amp problem

Discussion in 'Car Stereo Amplifiers' started by reaperpr, May 6, 2008.

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  1. reaperpr

    reaperpr Full Member

    hello i just installed a new amp sounds fine but when car is running every time a/c compressor kicks is the amp shuts off for half a second the second amp for base stays on with no problem iam thinking ground but not sure
     
    reaperpr, May 6, 2008
    #1
  2. pedro quiroga

    pedro quiroga Well-Known Member

    hmmm. whats the voltage at that amp when it shuts off?
     
    pedro quiroga, May 6, 2008
    #2
  3. reaperpr

    reaperpr Full Member

    good question all i know is that it didnt do it with old amp and it only does it when the a/c is on at low volume
     
    reaperpr, May 6, 2008
    #3
  4. cccullen

    cccullen Full Member

    sounds like a voltage problem to me. what size wires are you using, what kind of car do you have and what amps are you using?
     
    cccullen, May 6, 2008
    #4
  5. pedro quiroga

    pedro quiroga Well-Known Member

    cut the power to the bass amp and see if it still does the same thing. if not then it may be a voltage issue.
     
    pedro quiroga, May 6, 2008
    #5
  6. reaperpr

    reaperpr Full Member

    they are power acustic 2 ch 400 watt and i one 600 watt for bass oh i forgot to say it also does when i turn on the lights the problem is only with the 400 watt amp does not do it with other amp
     
    reaperpr, May 6, 2008
    #6
  7. reaperpr

    reaperpr Full Member

    if its a voltage issue what can i do?
     
    reaperpr, May 6, 2008
    #7
  8. pedro quiroga

    pedro quiroga Well-Known Member

    beef up your wiring to the amps.

    what size are you running and have you done the big 3.
     
    pedro quiroga, May 6, 2008
    #8
  9. reaperpr

    reaperpr Full Member

    OK i just check out the battery with a/c and lights on it goes down to 10 volts more or less could that be it?
     
    reaperpr, May 6, 2008
    #9
  10. cccullen

    cccullen Full Member

    only 10 volts??? that's definitely it.
     
    cccullen, May 6, 2008
    #10
  11. cccullen

    cccullen Full Member

    what gauge wires are you using now?
     
    cccullen, May 6, 2008
    #11
  12. pedro quiroga

    pedro quiroga Well-Known Member

    ouch 10 volts is dangerous. mine sits at 13.94v running.
     
    pedro quiroga, May 6, 2008
    #12
  13. reaperpr

    reaperpr Full Member

    should i get a gel battery?
     
    reaperpr, May 6, 2008
    #13
  14. cccullen

    cccullen Full Member

    no, upgrade your wires to at least 4 gauge wires and upgrade as well to the big 3.

    Make sure that you aren't running your power wire and RCA next to each other. Power wire and RCA's should be run on separate sides.
     
    cccullen, May 6, 2008
    #14
  15. reaperpr

    reaperpr Full Member

    ok thanks i will let you know
     
    reaperpr, May 6, 2008
    #15
  16. fstrfvo

    fstrfvo Full Member

    Sounds like your alt is bad. What is the voltage without the a/c and lights on. If your running a late model car with a electric fuel pump the pump will shut off at like 9 volts, like Pedro said thats dangerous. Take your battery in to a auto parts store and have them load test it, if it passes its probably your alt. You should be hitting about 13.8 to 14.2 at the battery with the car running.
     
    fstrfvo, May 7, 2008
    #16
  17. pedro quiroga

    pedro quiroga Well-Known Member

    take it to a parts shop for an alt and batt test.
     
    pedro quiroga, May 7, 2008
    #17
  18. reaperpr

    reaperpr Full Member

    alt is ok bat was low its a 3 yr old bat so i got a new one works better now but every now and then the amp will shut down for half a sec
     
    reaperpr, May 7, 2008
    #18
  19. pedro quiroga

    pedro quiroga Well-Known Member

    still sounds like you need to upgrade. what size wire are you running now?
     
    pedro quiroga, May 7, 2008
    #19
  20. reaperpr

    reaperpr Full Member

    not sure like a quarter inch more or less
     
    reaperpr, May 7, 2008
    #20
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