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Dennis Had Inspire Amps
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05-12-2019, 12:32 PM
straitwire
Senior Member
Join Date: Jan 2014
Posts: 263
Hey pechelman, with the B+ off there is some magnetic field pick up from the power transformer.
With the B+ in the on position with the amp operating, DC current is flowing through the output transformers and the hum will be eliminated.
straitwire
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