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Reload Thread: Engine Noise On Amp, Please Help!

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    rucanunes's Avatar
    rucanunes is offline Junior Member



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    Engine Noise On Amp, Please Help!

    Hello,

    I'm from Portugal, so sorry about any spelling mistakes or bad English...

    I was running a Kenwood receiver and 4 Alpine speakers om my car,
    everything was fine until I decided to install an Alpine Amp and a Subwoofer.
    Now, (and I'm sure it comes from the amp, because before that I had no noise),
    I have a noise that sounds like a miniature siren that rises in pitch with the speed
    of the engine. It's not to loud, but it sure anoyes me!

    What should it be the problem? Poor ground? Running a 12V power wire near
    the rca's? What?

    And what can I do to shut down this noise?

    Thank you,
    Raul Nunes







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    draegonaudio's Avatar
    draegonaudio is offline Junior Member



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    you need to turn the filter in the "on" position, on your amp that turns off the voice going to your sub's voice coils, now i'm not sure what kind of switches you have on your amp, but there should be some kind of switch that will that off, i have a kennwood and it's called a "low pass filter", when i have that "off" i get that buzz also, so check it out on your amp and that should solve your problem, hope i was some help.....peace




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    Ground

    If that doesn't work....the ground is the next thing to check....I have everything grounded in one central location in the trunk...including the deck....before that I had engine noise....now...its all good..




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    imral3's Avatar
    imral3 is offline Sponge Bob Rules !!!!!



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    the power wire cannot be near the rca's!!! the rca's and the power wire should be run down opposite sides of the car. the rca's are very sensitive and can pick up noise created by the power wire or even the fuse box under the dash. try all the suggestions listed and let us know if you still have any problems.
    Last edited by imral3; 04-16-2002 at 10:59 AM.



    good luck and good listening!

    L8r

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    rucanunes's Avatar
    rucanunes is offline Junior Member

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    Thank you all!

    I'll try my best to do what you all told me to,
    than I'll let you know for the results.

    Thank you,
    Raul Nunes




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