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Problem with car radio (noisy preouts and aux in)

Hi,
I have a Blaupunkt Acapulco Mp54 (brought used) everything is fine cd/radio and internal amplifier, but if I connect an external amplifier at the pre outs or a cd changer in the aux in it gets very noisy at the speakers, like a background noise, what could it be?
Thanks for help

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You have to ground properly the additional device (eg. the amp) That is normally cause for this problem.

Posted on Mar 07, 2008

  • Ginko
    Ginko Mar 07, 2008

    The constant low humming electrical noise means that the additional device had not been grounded properly.

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