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high pitch sound from component when accelerate

Discussion in 'Car Audio / Security / Electronic Accessories' started by cxnsi, May 5, 2004.

  1. cxnsi

    cxnsi Junior Member

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    my friends and i have wired and rewired the system, but when the engine is running, there is a small pitch sound from the components/speakers. it gets worst when i accelerate...anybody know what's wrong?
    will a capacitor help? is this a wiring issue?
     
  2. swanny

    swanny Senior Member

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    Dont quote me on this but i think it comes from running the remote wire too close to the power supply? Can anyone clarify? Audio isn't exactly my forte'
     
  3. MikeBergy

    MikeBergy Blah blah blah....

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    I know that the ignition system emits varying levels of EMF, but it is usually shielded, and has other filtering things built into the electrical wiring for the ignition. If you tapped into the wrong power wiring for your head unit, or something like that, you might get that emf noise in your system. Check your grounds too, make sure you are dealing with good grounding locations.
     
  4. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Check your grounds, make absolutely sure that your signal cables aren't running near your power cables... maybe get some actively shielded signal cables like I have.

    :)
     
  5. Canuck 93 Civic Si

    Canuck 93 Civic Si Senior Member

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    Its alternator noise from the power cable being too close to your speaker and/or signal wires. My car does it now to because i put the battery in the trunk and its power cable is next to my speaker wires :( . To fix it either move the wires apart, shield the power cable or (like me) turn up the radio until it goes away :lol: .
     
  6. 90crxb18

    90crxb18 Senior Member

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    run the wires that go from the head unit to the amp on the opposite side of the car, from the power cable and remote cable.
     
  7. cxnsi

    cxnsi Junior Member

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  8. ScrapinSi

    ScrapinSi Senior Member

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    also, how old are your spark plug wires? If they are arc'ing out, that can cause it too.
     
  9. BodyDroppedNikes

    BodyDroppedNikes ...PENDEJO.... VIP

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    sounds to me like its engine noise. ground it somewhere better.
     
  10. cxnsi

    cxnsi Junior Member

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    spark plug wires have not been replaced yet. ill try those things this weekend. thanks guys
     
  11. cxnsi

    cxnsi Junior Member

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    when you guys say signal wire, do you mean the remote wire?
    i've separated the power wire from everything else, but it still has that pitch. maybe i did not do a good job
     
  12. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    You might try dropping a PM instead of leaving me a stray message in a thread and expect me to read it. I can't read every thread.
     
  13. xionger1

    xionger1 Member

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    Could be anything electrical causing your RCA's to pick up the noise.

    If you've isolated your signal (RCA) cables from your power cables and that doesn't work, try to

    1. rerun your RCA's somewhere else in your car.
    2. CHECK ground, and try to reground somewhere else.
    3. if you have anything like crossovers or eq's, bypass them and see if that is causing the pitch. eq's are a great noise picker-uppers.

    If you have more than one electronic item hooked up, bypass one at a time and recheck for noise. If still present, then rehook it up and try another one.

    Hope this helps somewhat.

    ..cx..
     
  14. ScrapinSi

    ScrapinSi Senior Member

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    make sure your ground for your amp is as short as possible and is hooked to BARE METAL.

    make sure your power wire does not run near the engine's electrical system anywhere possible in the engine bay.

    How are your RCA's run? Are they near anything electrical with the motor?
     
  15. wannabe

    wannabe Junior Member

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    wow, how do ou get icons.
     
  16. civicboyz

    civicboyz Junior Member

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    its the power wire being too close to the ground wire.
     
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