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Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

RE: Granite audio ground zero

I don't know how to describe it exactly...a buzz out of the woofer, mid and tweeter are higher pitch, but it is also saw-tooth sounding, so I guess hiss would be the wrong way to describe it.
One of the first things I tried was a cheater plug. did nothing.
They are new KT150 tubes, don't have a second pair of 12AT7's to try.
How do you isolate signal ground from chassis ground, and still have them both grounded?
Jolida 3502rc, can't seem to find the schematic



Edits: 08/29/16 08/29/16 08/29/16

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