Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Mr.Death on November 24, 2022, 05:05:57 pm

Title: 1M value for Treble pot.
Post by: Mr.Death on November 24, 2022, 05:05:57 pm

I have a Traynor YBA3 and was wondering if anyone knows why a 1M value pot is used for the treble when most other amp builders use 250K? Does it have something to do with the James tonestack being fed back in? Maybe it has something to do with the fact that the tonestack is plate driven? Just curious, thanks.

Title: Re: 1M value for Treble pot.
Post by: sluckey on November 24, 2022, 05:26:41 pm

I've never seen a 250K treble pot in a James stack. All the old Ampegs use 1M. For example...

     https://el34world.com/charts/Schematics/files/Ampeg/Ampeg_b15n.pdf

Title: Re: 1M value for Treble pot.
Post by: Mr.Death on November 24, 2022, 06:10:13 pm

Thanks, seems to be the value needed for the circuit. Doing research now...