randybb Posted June 18, 2003 Share Posted June 18, 2003 KSM-12-C driven by yamaha em150. 2 X 75 Watts. As volume goes up speaker begins to make a hard buzz sound. Very pronounced after a hard attack. Bi-amping does not work. Woofer and horn seem to be in good shape. Quote Link to comment Share on other sites More sharing options...
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