One knob Vox tone stack?

[PurpleStrat]

I'm looking to add one to my Ruby amp. I just want to get in that Voxy area. Any help/

[Sir H C]

The one knob was a simple cap/pot across the output of the phase splitter.

[PurpleStrat]

I'm looking for something to add to the Ruby that will get me close to the classic Vox sound. I have not found anything anywhere! Help!!

[John Lyons]

The vox Tone stack doesn't really have that much to do with the Vox sound.
They had several different tone stacks as well. The single knob version is just a plain vanilla treble cut control as mentioned above.
For a vox type sound you'd be best off going for one of the ROG circuits put before a clean ruby. Matchbox, 18, etc etc.

john

[PurpleStrat]

Yeah I thought about the English Channel as inspiration. I was hoping  to do it with one knob though. I know I'm not going to get a little AC30 but I just want to get in the ballpark.

[John Lyons]

Oh yeah, forgot the english channel. Still, the EQ isn't that much of the vox sound.

What you can do is build the English channel circuit with all the knobs and then play with the settings.
Find what sound you like best, measure the pots resistance at the settings you like and replace the knobs with fixed resistors.
Most likely the treble knob will be the one you fiddle with most once the others are set.
Then the treble knob becomes your ONE knob tone stack.

John