update 2

Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

In Reply to: Igot them ol' hummmin blues Mama ...... posted by vinnie2 on January 29, 2015 at 13:36:26:

Well, I still can't tell you exactly where the ground loop was, but instead of bypassing the volume controls on my breadboards (they are older units and need replacing) I went ahead and hooked the rca cables from the preamp back up to them and now the hum in the left channel is very low. At least this way I can do my listening tests and decide if I want to use a 6c6 or an ef37a for the driver tube. They take different sockets so I have to decide before I can put the chassis together. I am hoping the remaining hum will disappear when I put the final amp together with a proper layout and lead dress.
Thanks for the help!

Edits: 01/30/15

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Topic - Igot them ol' hummmin blues Mama ...... - vinnie2 13:36:26 01/29/15 (5)

update 2 - vinnie2 06:50:53 01/30/15 (0)

update - vinnie2 05:45:21 01/30/15 (1)

RE: update - Garg0yle 07:07:02 01/30/15 (0)

RE: Igot them ol' hummmin blues Mama ...... - Garg0yle 17:29:11 01/29/15 (1)

RE: Igot them ol' hummmin blues Mama ...... - vinnie2 04:31:05 01/30/15 (0)

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update 2 - vinnie2 06:50:53 01/30/15 (0)

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