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In Reply to: Serious hum problem - Dynamo 34SE posted by smrex13@gmail.com on March 19, 2015 at 23:00:01:
Sound like DC on your AC mains or some DC Offset issue. maybe even a ground loop or internal grounding issue in the amp.
Check the AC main for any DC on the AC line then you can go from there. I had an issue with that just recently. My Edge amp didn't have a problem with it but my upgraded/Modded Counterpoint SA-12 did like it. I measured the AC line for DC with a DMM and sure enough, the was .6vdc on the AC line. I bought a AVA Humdinger and all is well now. The amp is quiet now.
Hope this helps.
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- RE: Serious hum problem - Dynamo 34SE - Cougar 20:30:53 03/20/15 (0)
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