SET Asylum

Posted by deathtube 667 (A) on April 01, 2021 at 02:51:42

In Reply to: RE: I have no explanation for that. nt posted by Tre' on March 30, 2021 at 17:27:00

I removed some carbon comp grid stoppers from the 6SN7 driver stage relay sockets on my breadboard.

My ARTA test setup uses a 100K pot to trim voltage coming out of the sound card. It is housed in a plastic box with rca jacks for in/out.

For some reason, I am getting odd THD readings from on the left channel, so I think the grid might be going into oscillation as I turn the pot.

A test signal directly from the soundcard into the amp causes no problems.

I will have to investigate further and try to input cap mod again.

DT 667

Edits: 04/01/21

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