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DIY Stompboxes => Building your own stompbox => Topic started by: fuzzo on November 25, 2009, 04:32:40 PM

Title: Fuzz pot issue (fuzz face)
Post by: fuzzo on November 25, 2009, 04:32:40 PM
Hi guys,

I've a serious issue with ALL my fuzz face type circuit. I do the regular fuzz face circuit and the fuzz pot 1K gives nothing expect at max . The curve before the exact 1K value gives dull sound and absoluetely "no fuzz"  that makes that pot. useless , I have to put it all the time at max.

It's a known problem ? or that's juste me ?
Title: Re: Fuzz pot issue (fuzz face)
Post by: GibsonGM on November 25, 2009, 07:27:57 PM
Are you using the correct taper pot? Is the pot working, or broken?  Do you have the bypass capacitor from the emitter in the circuit as well?  Just a couple of places to look...another thing...are you using the original 60's fuzz face circuit, but using modern (silicon vs. germanium) transistors? THAT will cause very little fuzz, too!   Just asking...
Title: Re: Fuzz pot issue (fuzz face)
Post by: fuzzo on November 26, 2009, 01:25:38 PM
I tried a lot of different values, nothing changed. :-\ 10uf , 22uf , 100uf (on a wooly mammoth clone wich has the same issue). different transistor.

I even tried to swap the 1K for a 2K and it's the same case, fuzz only at max.

Otherwise maybe there's an other way to put a gain control , really useful.
Title: Re: Fuzz pot issue (fuzz face)
Post by: CynicalMan on November 26, 2009, 04:20:57 PM
Is your guitar wiring or pickups abnormal? If your guitar has an especially high output impedance, your fuzz will seem to have less gain available.