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  1. #1
    sergemcgraw83's Avatar
    sergemcgraw83 is offline Junior Member



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    Weird noise when pressing head unit buttons

    Hi,

    First of all this audio system is on a boat.

    Clarion CMS1 headunit, an Alpine KTP-445U amplifier powering 2 Alpine SPR-M700 (bridged mode) and another Alpine KTP-445U amplifier powering 4 Alpine SPS-M600.

    Inputs = Low Level RCA.
    Power = Direct to boat battery via 8 AWG
    Ground = Direct to boat battery via 8 AWG

    Yesterday my two amps and the headunit was getting it'S power from an two existing power wires (14 AWG) and everything was fine but when raising the volume too much the amps would shut down (not enough power).

    So I wired the two amps directly to the battery via 8AWG (Power and ground). Left the head unit plugged into boat wiring.

    Now the trouble is, when pressing any button on the headunit or when it changes songs, there is a weird 1 second sound coming from the speakers... like a star wars laser firing or something.
    Didn't do that when the amps were plugged into factory harness...
    Also mind that it is doing it while the engine is off and no other acccesories are on. Also when the music plays it sounds allright from what I can hear.
    Any ideas??

    Thanks







  2. #2
    CrossoverOre's Avatar
    CrossoverOre is offline CarAudio.com Elite



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    Re: Weird noise when pressing head unit buttons

    if you had a mini amped speaker you could test the outputs from the deck I would be willing to bet its the deck causing the noise.




  3. #3
    mrclean636's Avatar
    mrclean636 is offline Time is Money



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    Re: Weird noise when pressing head unit buttons

    I'd do ^above. Also check to see if any of the RCAs or speaker wire is crossing over or close to any of the electrical wire. The wires could be picking up noise from the power cables.



    Car: 2011 Ford Taurus SEL / Alt: DC Power 270XP
    Deck: Pioneer AVIC-Z140BH / Amps: (1) DC 5.0K, (1) RF T400-2
    Speaks: (1) RF T2652-S 6.5", (1) RF T1682 6x8"
    Subs: (2) DC XLm2 15's / Batts: (2) XS XP3000 Batts
    Wiring: Kolossus Fleks Kable 1/0 (2 runs)

    My Ratings:
    iTrader: http://www.caraudio.com/forums/itrader.php?u=1011469
    Feedback Thread: http://www.caraudio.com/forums/buyer-seller-feedback/575818-mrclean636-feedback-thread.html

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