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Thread: Induced noise/Ground loop trouble shooting guide.

  1. #31
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    so the USB sound card has absolutely no power coming to it other than from the USB?

    do you have a link to the card (or a model number) that you are using?
    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!

  2. #32
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    That's right, the sound card is only powered by USB.

    Here is the link http://www.turtlebeach.com/site/prod...dioadv/roadie/

  3. #33
    FLAC
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    Quote Originally Posted by Red GTi VR6
    Will -

    I've yet to hear of anyone implementing an iPOD in their car and it sound worth a damn, have you?
    Nope, and I own a couple. Worthless PoS

  4. #34
    FLAC
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    Im not sure where to begin here. Could be induced noise, could be ground loop.

    Have you tried grounding the chassis of the USB sound card? Might be able to ground the power wire (-) of the USB sound card. I cut out my USB sound card because of weird issues like this. Do you hear the static if you plug in a pair of headphones?

    What does the internal sound card sound like?

  5. #35
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    I was worried that the problem might be too goofy to fix. The internal sound card isn't working now, but I haven't messed with it much. I do hear static if I plug in headphones. Identical to the static I hear on the speakers. I will try grounding the USB ground wire to the chassis later today...couldn't hurt.

  6. #36
    FLAC
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    Well thats your first clue. This is before and has nothing to do with your amp. Lets work on the pc/sound card. Try the grouning of the sounc card chassis.

  7. #37
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    So I grounded the USB to the chassis and it got rid of the constant static. Now I get more of a popping sound when the bass hits or when the music gets louder. Almost sounds like speaker problems. Will get my headphones from the office and try those out today to see if I get the same thing.

    Thanks for your help.

  8. #38
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    have you tuned your system yet?

    that could be the sound of your system not being properly tuned thus causing distortion.

    http://www.350z-tech.com/zwiki/Tutor...plifier_Tuning

    Follow that guide and let us know.
    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!

  9. #39
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    cheap pac ground loop isolator connects to output rca jacks for h/u or pc and connects go the inputs from the amp and the the other 2 wires to ground that solves what i like to call the little bird inside the car noise

  10. #40
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    I did get a chance to try out the headphones and I get the same thing so it is still between the sound card and the amp. I will get a ground loop isolator and try it out. Anywhere local to get one of those or just order online?

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