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We have a five pin microphone on a P.A. system which was originally installed in 1976. When the microphone is powered up we get a loud buzz, but only in one of the four available plugs. The other three plugs work fine. Any ideas what may be causing this?

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I play in a band and we had he same problem. No matter where we plugged the mic it would buzz. We bought a shieled cord and that took care of the problem. That may work. What type of PA head are you using. ?

Posted on Mar 10, 2009

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