Robert R Posted April 6 Share Posted April 6 At rest, my new R-40PM connected to absolutely nothing makes a low volume beating sound. Brand new. Ready to send back to Amazon unless you all say that’s normal. Quote Link to comment Share on other sites More sharing options...
JohnA Posted April 16 Share Posted April 16 Connect them to a source like a preamp or disc player. If they still buzz, return them. Quote Link to comment Share on other sites More sharing options...
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