Bottlehead Forum

General Category => General Discussion => Topic started by: sbelyo on April 09, 2011, 07:30:50 AM

Title: Mullard 12AU7 tests bad when running grid leakage test?
Post by: sbelyo on April 09, 2011, 07:30:50 AM

Hello..

I have a Mullard 12AU7 that tests good for emissions but when I run a grid leakage test one side shows questionable, and the other side shows bad.

What will this tube do when I use it in my crack?

Title: Re: Mullard 12AU7 tests bad when running grid leakage test?
Post by: dstrimbu on April 10, 2011, 05:01:20 PM

I'm thinking that it will be really noisy.  I have one of those too, bought it on eBay.  It hums badly.