Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: okguitarman on August 16, 2018, 06:13:19 pm

Title: 5E3 Tone stack
Post by: okguitarman on August 16, 2018, 06:13:19 pm

 How To add TMB to circuit?  :w2:

Title: Re: 5E3 Tone stack
Post by: sluckey on August 16, 2018, 06:30:56 pm

Take a look at the AB763 circuits.

Title: Re: 5E3 Tone stack
Post by: okguitarman on August 16, 2018, 06:48:37 pm

Would I place it in normal side or bright side or right where its at?

Title: Re: 5E3 Tone stack
Post by: sluckey on August 16, 2018, 07:10:32 pm

Might be better to look at this...

     https://el34world.com/charts/Schematics/files/Fender/Fender_princeton_aa964.pdf

Title: Re: 5E3 Tone stack
Post by: okguitarman on August 16, 2018, 07:14:29 pm

Like this?

Title: Re: 5E3 Tone stack
Post by: okguitarman on August 16, 2018, 08:14:43 pm

250pf in the wrong place oops!

Title: Re: 5E3 Tone stack
Post by: terminalgs on August 16, 2018, 08:19:18 pm

you don't need that .1 out front.


keep in mind that when Fender adopted the TMB TS they added a 2nd gain stage 12AX7 to make up amplitude lost with the new circuit.

Title: Re: 5E3 Tone stack
Post by: okguitarman on August 16, 2018, 08:28:47 pm

this better or use 250pf for coupling and drop .1
your right  (gain stage) might stick with single tone control
thanks for the help everyone!