AB763 trem speed pot removal

[Jake152436]

Hey there!

this is a pretty simple one, but wanted to post here before doing anything.

I have a ab763 bandmaster that I have added a mid pot to, but I currently have it wired so it’s where the ground switch used to be. I’d like to move it to the front of the amp without drilling any holes. I do not use the tremolo, so can I simply disconnect the trem speed knob without adding any preamp gain? I know I can disconnect the trem intensity knob, but that would add preamp gain, and is not desirable in my application.

thanks!

[loudthud]

Either move the Intensity pot to the Ground Switch hole, or replace the Intensity pot with a 50K fixed resistor. See if you can find a 51K resistor.

[Leo_Gnardo]

Is it Ground Hog Day? Again? I think we went through this one a few days ago. By golly yes we did, with good answers. Right here: https://music-electronics-forum.com/...d-knob-removal

Same answers apply.

[Enzo]

I don't care what the groundhog did in Penna, I care about Michigan. Unfortunately, it was bright and sunny here.

[loudthud]

Funny story: I found a blackface Single Showman head at a pawn shop. Tried it out, it wouldn't make a sound other than a faint hum. Got it for $100. Turns out it had a Master Volume control wired into the Speed control which I had turned all the way down.

[vintagekiki]

https://music-electronics-forum.com/forum/amplification/guitar-amps/maintenance-troubleshooting-repair/924214-ab763-trem-speed-knob-removal