Adding a Axis Face "Smooth" Knob to Hipster Fuzz

[Bieling3]

I want to add a 100kB linear pot to my Hipster Fuzzface clone as described at fuzz central's Axis Face page:

http://fuzzcentral.ssguitar.com/axisface.php

The "Smooth" Control
The next thing that we're going to do with the circuit is to add a 100K linear taper potentiometer to the input of the circuit, between the new pulldown resistor and the input capacitor, to act as a sort of a pregain. This mod was originally put on the Fuzz Face-style circuits by Mike Fuller and the '69 fuzz pedal. We're only going to use the first lug and the wiper lug of the pot since it only needs to act as a variable resistor. This pot will allow you to reduce the "fizziness" of the fuzz, and will also allow you to greatly smooth out the texture of the fuzz. The pot should be wired like this: Lug 1 attached to the input, Lug 2 (the wiper) attached to the base of Q1, and Lug 3 left unconnected. With this wiring the pot will be at minimum resistance when it's turned fully counter-clockwise, and at maximum resistance when fully clockwise.

The schematics aren't all that different between the two but never the less my inexperience has me asking:

Should I wire the pot between "A" and "B" or "B" and "C"?

[T_MBaker]

I'd wire it between your footswitch and 'C' (or 'IN'). 'A', 'B' and 'C' are all connected on the PCB by a trace.

[Bieling3]

Excellent, that's what I did and I was worried I'd made a leap thinking it should go there. It doesn't act so much as advertised, I feel like it's almost acting like the tone knob on my guitar does anyways. Except it goes from a full sound to a thinner mids-ier sound instead of bright to dark. It takes away some of the fart and the pins and needles but I don't know if its worth it. I'll have to try it live and see what's really going on in a band context.

[T_MBaker]

I've never implemented this mod on a fuzz face before so I can't talk from experience. If you look at the Zygote build doc found somewhere here http://www.madbeanpedals.com/forum/index.php?topic=5134.0, read about the strain control. It's pretty much the same thing. It is possibly only useful for making adjustments to suit specific guitars, a humbuckered Les Paul vs a single coiled Telecaster or something like that.