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HELP! have white noise

Discussion in 'Audio & Video' started by Burgman, Jun 1, 2009.

  1. Jun 1, 2009 at 10:44 AM
    #1
    Burgman

    Burgman [OP] I KEEEEEL YOU

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    HELP!
    install is complete, kinda
    have the front and rear speakers wired amp to the HU everything is wired

    problem: with gain of amp set to the very lowest setting im picking up a white noise a, schhhhhhhh
     
  2. Jun 1, 2009 at 11:04 AM
    #2
    itsmyturn

    itsmyturn Well-Known Member

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    what kind of equipment?
     
  3. Jun 1, 2009 at 11:05 AM
    #3
    Burgman

    Burgman [OP] I KEEEEEL YOU

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    boston components up front with rockfords in the rear a pioneer avh p4100 HU and a pioneer gm 6400f 4 channel
     
  4. Jun 1, 2009 at 11:10 AM
    #4
    itsmyturn

    itsmyturn Well-Known Member

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    how's your ground. what gauge wire are you using to the amp. at this point it's a process of elimination. if you're willing, try to wire those speaker directly to the radio, eliminating the amp. there is one other possibility- but save that for later as it is worst case senario- blown pico fuse in your headunit.
     
  5. Jun 1, 2009 at 11:12 AM
    #5
    Burgman

    Burgman [OP] I KEEEEEL YOU

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    ive tried several ground points and im running 4 guage wire
     
  6. Jun 1, 2009 at 11:22 AM
    #6
    Burgman

    Burgman [OP] I KEEEEEL YOU

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    i soldered the speaker wire to all the speakers, would that matter?
     
  7. Jun 1, 2009 at 11:22 AM
    #7
    itsmyturn

    itsmyturn Well-Known Member

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    could be your amp, the rca's or the pico fuse. try a different set of rca's or another amp if you can borrow one. is it alternetor whine you are hearing, does it change speed with the engine?

    diagnosing a pico fuse is a little involved.
    get a wire and touch the outer shield of the RCA to the harness ground. if the noise stops, that's the problem. i believe pioneer charges a flat fee to repair the pico fuse as it the size of an eyelash.

    hope the repair is something easy
     
  8. Jun 1, 2009 at 11:25 AM
    #8
    Burgman

    Burgman [OP] I KEEEEEL YOU

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    its the same with engine on or off.
     
  9. Jun 1, 2009 at 11:33 AM
    #9
    GoBlueFan

    GoBlueFan Well-Known Member

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    start eliminating one item at a time to see if it's a component type of deal. You can feed your amp from a home reciever via RCA's to eliminate the HU. Grab an old speak and hook it to the amp to see if you are getting the noise. Eliminate the cross overs, etc....

    One item at a time. You'll find it.
     
  10. Jun 1, 2009 at 11:36 AM
    #10
    itsmyturn

    itsmyturn Well-Known Member

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    if you have a multimeter check for continuity from the rca ground at the stereo to the stereo chassis. you will have to unplug the rca's form the stereo first though. if it's an open circuit the headunit may need repair.
     
  11. Jun 1, 2009 at 11:46 AM
    #11
    Burgman

    Burgman [OP] I KEEEEEL YOU

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    thanks for the info, going to get back at it
     
  12. Jun 1, 2009 at 12:04 PM
    #12
    Burgman

    Burgman [OP] I KEEEEEL YOU

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    so i unplugged the rcas from the HU and i still had the noise, its the amp then correct?
     
  13. Jun 1, 2009 at 12:13 PM
    #13
    Burgman

    Burgman [OP] I KEEEEEL YOU

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    any more ideas, i would really like to get my car put back together
     
  14. Jun 1, 2009 at 12:16 PM
    #14
    itsmyturn

    itsmyturn Well-Known Member

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    can you feed the amp a different signal i.e. an ipod or home dvd player or something. make sure to use the rca's you installed and then eliminate. if the noise is still present then it may your amp.
     
  15. Jun 1, 2009 at 12:30 PM
    #15
    Burgman

    Burgman [OP] I KEEEEEL YOU

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    well i used a ps2 and it still had the noise, so i didnt use my rcas
     
  16. Jun 1, 2009 at 12:43 PM
    #16
    Burgman

    Burgman [OP] I KEEEEEL YOU

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    so bad ground or bad amp?
     
  17. Jun 1, 2009 at 1:18 PM
    #17
    itsmyturn

    itsmyturn Well-Known Member

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    could be either one. you have already tried a different ground correct?
     
  18. Jun 1, 2009 at 1:19 PM
    #18
    Burgman

    Burgman [OP] I KEEEEEL YOU

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    yea a couple of spots
     
  19. Jun 1, 2009 at 1:24 PM
    #19
    lsocoee

    lsocoee My hair is all natural Moderator

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    you need to remove the paint off of the area you are trying to ground to.
     
  20. Jun 1, 2009 at 1:41 PM
    #20
    Burgman

    Burgman [OP] I KEEEEEL YOU

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    done that lsocoee, been talking to Marv figured its the amp, returing it
     
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