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Thread: Why do my amp switch off when I drive???

  1. #1
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    Exclamation Why do my amp switch off when I drive???

    In my Uno I have 2 x 12" 1000w DVC Pioneer subs (to see what they look like go http://www.howhotismycar.com/?i=4470) connected to a 1200w 2 channel Starsound amp (both subs bridged to one channel) + 2 x 500w starsound 6x9's connected directly to my Wharfedale Mp3 frontloader. When I installed my sound it played perfectly for about 2 months, but now the problem is that when the car stands still and idles the sound plays perfectly at high volume, but as soon as I start to drive, it goes soft and most of the time the subs hardly play just the 6x9's play normally. People told me that the amp is too small for the subs and overheats (that's somewhat true, because the amps gets very hot), but why doesn't that happen when the car isn't driven??? Someone also told me that it's my altinator regulator. Can someone help me with advice, before I have to spent unnessacery money.

  2. #2
    Low Bitrate
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    Spring City, Tennessee
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    sounds like the addition of your aftermarket audio has taken its toll on your voltage regulator circuit on your alternator.

    Which model Starsound amp do you have installed?

  3. #3
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    have you checked your grounds?

    I'm not experienced with the brand of amplifier, however, after a quick google, they look extremely generic. usually meaning they are a knock off and have much lower quality components.

    also, to have a set of 6 x 9s with a claimed power rating of 500 watts is a bit over the top and quite honnestly, difficult to believe.

    I'd venture to bet that your equipment is having problems doing it's job. Double check all of your grounds and make sure they are 100% solid and are making a good connection.

    Do you have any problems with any other components in the car? any other electrical issues?

    If it's JUST the audio system giving you problems I wouldn't think it would be the alternator.

    How big is your alternator? Have you upgraded the big 3? are you still on the stock battery? how old is the car? how many miles?
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  4. #4
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    Red brings up some good points after i took a visit to the amp's site. The company does look a bit on the 3rd rate side....

    ::EDIT:: On your amp, when things go "quiet" Have you had a chance to pull over and look at your amp to see if its going into protection for some reason?

  5. #5
    FLAC
    Join Date
    Jul 2001
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    1,109
    Nobody's seen the obvious answer yet: Your amps switch off because you touch yourself at night.

    Right, said Red.

  6. #6
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    Quote Originally Posted by Shadow View Post
    Nobody's seen the obvious answer yet: Your amps switch off because you touch yourself at night.

    Right, said Red.


    What???

  7. #7
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    Sep 2006
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    Thanx. I found my problem: My grounds. The one connected to my amp was connected onto my back shock. As I started driving the shock moved and with that I lost my ground. I now connected it by myself to the car directly. The guy that did my installation for me was actually very stupid. Thanx for all your advice...

  8. #8
    FLAC
    Join Date
    Jul 2001
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    1,109
    There's usually a rubber bushing on the rear shock. That's why Red always recommends to not use anything factory as a ground.

  9. #9
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    :d
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  10. #10
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    Go Red, you clever child!

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