ounvme Posted January 7, 2012 Share Posted January 7, 2012 I am trying to isolate a problem and repair a Sub-12 amp. The sub makes a popping/clicking/electrical sound a few seconds after it "warms up" I measured the secondary supply voltage and I am getting 100V. This seems high as alot of Klipsch products run on 50-60V. I cannot confirm that this is the right voltage. The sounds/noise is supply related but I am having trouble finding the cause. It could be the Bash Module(Controls the boost converter for the secondary supply) or the PDC Board (Controls the SMPS switching). Even with the noise and powered on I was not getting any output from the sub. The best way to describe the noise is like a zipper being undone slowly 15-20Hz. Anyone have any tips? Sending back or replacing isn't fixing the problem its an expensive bandaid. This is a fixable issue. I am just stuck where to start. Quote Link to comment Share on other sites More sharing options...
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