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RE: That is a ground loop. You have a cold ground joint somewhere. nt

They can be buggers to find as seemingly "good looking" joints can have problems. That it is around the volume control section narrows it down quite a bit. Ground all of the shields on the input RCAs together and tie them to a good central ground. Ground your volume control to the same point. The input tube grounds should be at this point too. This will trap the volume control hum problem somewhere in this area. The volume control itself should be looked at.


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  • RE: That is a ground loop. You have a cold ground joint somewhere. nt - Chip647 14:30:23 04/01/25 (0)


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