Tube Amp Archive

For anyone that might be interested, here is a demo we filmed of the amp.
Cheers

https://youtu.be/BPfQDySbz9o

Why such a big value pot to test with, a 15k would be a better starting point in my mind? I picked that for two reasons, firstly I read a posting from someone else who had used that value Pot for the same mod and really liked the results. So I started out thinking I would just use that. Secondly, t...

robrob wrote:The black 'ground' wire from the output transformer secondary should be grounded at the speaker jack's sleeve (ground) terminal.

I would ground the variable NFB pot to the preamp bus. That's where the 5F6A Bassman's Presence control is grounded.

Thanks. That's very helpful!

Hi there, I'm on my first built, a 5F1 of course. I'm doing a bus grounding scheme a la Boot Hill's examples I found on the web. Everything seems relatively clear except for two points. The wiring layout I am using (Triode) has a ground run from the Speaker Jack. Should this go to the power-ground b...