Dynaco-Doctor Forum

RE: PAS-3 hum (I know, I know)

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This Post Has Been Edited by the Author

In Reply to: RE: PAS-3 hum (I know, I know) posted by CaseyTheLibrarian on January 17, 2017 at 17:37:31

That would take more work. The procedure I described should be less work and is consistent with developments in the PAS manual over time that may have been to address this very problem. But, if you want to run the ground wires to 8, it's certainly worth trying.
Eyelets 1 and 8 are on the same circuit trace - they are the same point, electrically. One issue Bill was raising was the thinness of the trace and the distance the different wires and other parts are from each other on that trace (depending on whether they are connected closer to 1 or to 8). If I understood him correctly, I believe this is what he was attributing the hum imbalance to.
The old PAS Dynaco manual had the ground wire from the quad section capacitor at eyelet 8 but in the later manual this wire was moved to eyelet 1. Of course, which way ends up working better may need some experimenting.

Edits: 01/17/17 01/17/17 01/17/17 01/17/17 01/17/17

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