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Alternator whine buzzing sound HELP (I'm going nuts)

Discussion in 'Audio & Video' started by JTDTacoma, Jul 20, 2010.

  1. Jul 20, 2010 at 2:58 PM
    #1
    JTDTacoma

    JTDTacoma [OP] Well-Known Member

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    I have a Pioneer deck and JBL 4 channel amp, no sub. I have the buzzing sound when the truck is running, which goes up in pitch with the engine revving. With the truck off, there's some hissing but not bad.

    I've narrowed it down a little. Since it's a 4 channel amp I have 2 sets of RCA's going from the deck to the amp. If I unplug EITHER pair of RCAs the sound goes away even if the truck is running (when it was the worst). I can unplug a pair at the deck OR at the amp and it goes away. It only happens when BOTH pairs of RCAs are hooked up. The RCA's are traveling down the passenger side alone. All other cables are on the drivers side.

    Do I just need 2 new pairs of RCA cables?
     
  2. Jul 20, 2010 at 3:13 PM
    #2
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    getting there....
    get a ground loop thing from radioshack.......bout $15 i think........hooks to the rca cables.....will take care of that buzzing.
     
  3. Jul 20, 2010 at 4:38 PM
    #3
    JTDTacoma

    JTDTacoma [OP] Well-Known Member

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    Ground feedback... So a ground loop isolator is what I should get? Or should I ground HU at the amps ground?
     
  4. Jul 20, 2010 at 4:39 PM
    #4
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    getting there....
    i'd actually probably do both...but thats just me.
     
  5. Jul 20, 2010 at 4:45 PM
    #5
    shocker01

    shocker01 Well-Known Member

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    5100 Billies, drop-in k&n, deck plate, gray wire, Dynomax exhaust.
    Make sure the HU has a good ground, and ground the amp to the frame and you shouldn't have any problems. Could be a bad set of RCA's, but a good shielded set isn't that expensive.
     
  6. Jul 20, 2010 at 4:56 PM
    #6
    JTDTacoma

    JTDTacoma [OP] Well-Known Member

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    Thanks guys! I just used the factory wiring's ground when I installed the HU. Maybe that's not good enough.
     
  7. Jul 20, 2010 at 5:36 PM
    #7
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    getting there....
    check out this thread i started a few days ago...tell me what you think??

    http://www.tacomaworld.com/forum/audio-video/103190-popping-sound-coming-thru-speakers.html

    i grounded the head unit cage yesterday...made a lil difference, but popping is still there.
     
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