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    rc10mike's Avatar
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    Icon33 Amp making high pitched noises...

    Zapco Ref 1000.4


    It seems whenever the bass notes hit while playing music, the amp itself emits a somewhat loud high pitch squeal. I thought it was from the speaker at first. Any ideas? Could this indicate a problem? The speakers play fine!



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    Re: Amp making high pitched noises...

    So it's basically some electrical
    noise, could it be caps charging?
    I guess that would be okay.




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    rc10mike's Avatar
    rc10mike is online now I b sippin on sizzurp

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    Re: Amp making high pitched noises...

    I have no clue as to what would make such a noise!



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    Re: Amp making high pitched noises...

    how loud? the fans in my c2k's vary in speed with the current draw, so that makes sense. but its been a long time since i have been that close to the 1000.4 in my boat to see what its doing. i think it is just a constant speed. i know that my ref dc's were just a constant speed.




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    rc10mike's Avatar
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    Re: Amp making high pitched noises...

    Its not super loud, but it is noticeable. Its very high pitched.

    Someone over on diyma said the transformer is loose, causing the noise, but IDK.



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    rc10mike's Avatar
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    Re: Amp making high pitched noises...

    FYI, I found that there is no fan in the REF 1000.4....



    Bought From:bad @SS chevy, kmanian, bpres9991, TurdFergueson2, donpisto
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    rc10mike's Avatar
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    Re: Amp making high pitched noises...

    Im going to take the amp apart later so I can get my ear in there!



    Bought From:bad @SS chevy, kmanian, bpres9991, TurdFergueson2, donpisto
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    Spectrum's Avatar
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    Re: Amp making high pitched noises...

    lol dont get too close...




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    Re: Amp making high pitched noises...

    Quote Originally Posted by rc10mike View Post
    FYI, I found that there is no fan in the REF 1000.4....
    its possible that my dealer got me a special one then, because mine 1000.4 does. its possible that it is an outboard accessory though because i remember the special considerations when mounting. it required cutting a cupholder in the boat.




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    Re: Amp making high pitched noises...

    one of my treo amps makes a simular sound




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