RE: update

Tube DIY Asylum

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

In Reply to: update posted by vinnie2 on January 30, 2015 at 05:45:21:

It does sound like a ground loop with the preamp.

You could plug a cell phone in instead of the preamp to see if it still hums or not.

I have isolated RCAs which are grounded only at the local ground start for the driver tube stage.

Most times IME it does have something to do with the way the RCA wire is configured.

Sounds like you are on to something. I'm confident you will get a scheme when you do your build.
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Follow Ups Full Thread

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)

Follow Ups

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

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