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hotwaterwizard

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  1. hey, i am having a problem with my power amplifier, it's a 50w PA with audio mixer. I am quite desperate now, i have tried to lessen the humming, indeed it is quite less, but my proff wants no humming at all....what shall i do? please help me out?
    thank you very much.


    Look for any wires that go in to the amplifier. If one shield wire is broken there will be a hum. Also a bad mic will cause a hum. If that does not work then you should look at the capacitors in the power supply section of the amplifier. Also You could spray the controls with some contact cleaner. ( only Use contact cleaner designed for this! If you don't it will ruin the controls for good!)
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