RE: stereo amp flywheel supply, 40% more hum in one channel

Are you grounding all your channel frames to safety ground?

I'd pull the tubes and load the power supplies with resistors, then start disconnecting things on the right channel till the hum drops.

If I had to make a wag, I'd say the filament transformers could be the culprit.

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Topic - stereo amp flywheel supply, 40% more hum in one channel - genelex 10:03:50 02/19/15 (13)

RE: stereo amp flywheel supply, 40% more hum in one channel - genelex 13:14:37 02/19/15 (1)

RE: stereo amp flywheel supply, 40% more hum in one channel - drlowmu 14:48:23 02/19/15 (0)

RE: stereo amp flywheel supply, 40% more hum in one channel - Caucasian Blackplate 11:23:23 02/19/15 (0)

RE: stereo amp flywheel supply, 40% more hum in one channel - Michael Samra 10:31:43 02/19/15 (2)

RE: stereo amp flywheel supply, 40% more hum in one channel - drlowmu 10:35:49 02/19/15 (1)

RE: stereo amp flywheel supply, 40% more hum in one channel - Michael Samra 10:39:30 02/19/15 (0)

RE: stereo amp flywheel supply, 40% more hum in one channel - drlowmu 10:25:39 02/19/15 (6)

RE: stereo amp flywheel supply, 40% more hum in one channel - genelex 14:10:01 02/21/15 (1)

Great that you fixed it !!! - drlowmu 14:26:32 02/22/15 (0)

RE: stereo amp flywheel supply, 40% more hum in one channel - rage 10:40:15 02/19/15 (3)

RE: stereo amp flywheel supply, 40% more hum in one channel - deathtube 667 16:12:23 02/19/15 (1)

RE: stereo amp flywheel supply, 40% more hum in one channel - rage 20:34:53 02/19/15 (0)

RE: stereo amp flywheel supply, 40% more hum in one channel - drlowmu 14:42:55 02/19/15 (0)

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RE: stereo amp flywheel supply, 40% more hum in one channel - Caucasian Blackplate 11:23:23 02/19/15 (0)

RE: stereo amp flywheel supply, 40% more hum in one channel

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