Axis Face Fuzz

[Adamadamadam]

Does anyone have any experience with Fuzz Central's Axis Face Fuzz? I've never played a an ff style pedal and this one seems pretty legit. I know that ge has all the mojo, but I value the stability of si. Sorry not sorry.

I've worked up a turret layout, but I figured I'd fish for opinions before committing. Values you'd change? Alternatives for the transistors?

Sorry if this build has been discussed before, but the search didn't turn up much.

[eatyourguitar]

Sometimes there is a cool silicon ff but i mostly build germanium with the transistors, resistors, caps, battery, style of construction etc.. under careful consideration. Everything affects the sound of a ff. That being said, axis is not bad. Your own ears are your best tool. Keep it if you like it.

[Ben79]

I just built one alongside a Harmonic Energizer in one pedal.

I used a P2N2369 for q1 and an AC127 germanium in q2. Sounds great.

I accidentally 'invented' my own 'bias' control one day when I miswired the gain pot. If you wire the 15uf cap to lug 3 of the attack pot instead of lug 2, and send 1 and 2 to ground, then it works as a bias control! No idea if this can be harmful to your semiconductor but so far so good on the 3 Fuzz Faces I've done this on. You might want to try strapping a resistor across the pot to lower the value as the nice starved tones are a bit bunched up.

I used a 20k trimmer for the q2 (regular) bias resistor.

I think the input attenuator pot works better than the original Fuzz Face gain/attack pot.

I'd say build one but use hole board or vero and stick in some sockets for the trannies and the input cap and experiment.

[Adamadamadam]

Thanks for the tip on the variable emitter resistor: I'll have to give it a try. It makes sense, but I hadn't thought of it.