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In Reply to: Tube amp debugging - Hum posted by Ron B on March 13, 2006 at 16:43:09:
My guess would be that you need more regulation in the B+. A second choke stage, more capatance, or a constant current source to get the noise response you want.Easy test to determine if you have a B+ Problem is to put in a switch in the B+ that allows you to cut the B+ but leave the heater supplies on. While the B+ caps discharge, you will have enough voltage to hear if the noise goes away or stays when you cut the B+. Then you will know the cause.
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Follow Ups
- Re: Tube amp debugging - Hum - Chris O 18:46:02 03/13/06 (1)
- Re: Tube amp debugging - Hum - Ron B 19:39:57 03/13/06 (0)
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