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Re: Fuzzrite help needed

Posted: Wed Feb 23, 2011 2:05 pm
by Mr. Bill
Congrats! Glad I could help.

Now you need to choose which value pots you like best in the circuit.

Have fun!

Re: Fuzzrite help needed

Posted: Thu Feb 24, 2011 5:08 pm
by E9th
I put the 350Ks back in both slots. both audio taper. There are some really cool sounds in this pedal. I found a hendrix song where he uses it called psycho. kind of interesting.

Re: Fuzzrite help needed

Posted: Fri Feb 25, 2011 11:44 am
by Mr. Bill
Yes, the Fuzzrite will do the psychedelic thing really well. It's hard to tell if that was a Fuzzrite on the Hendrix clip, as there was so much covering it up in the mix.

Re: Fuzzrite help needed

Posted: Sun Jul 17, 2011 12:46 pm
by devnulljp
Hey, are you still trying to get this to work?
I have a bunch of these old Fuzzrites -- PM me if you need info on specific parts or pics of specific areas.
The schematics on the web are often wrong.
That's my Fuzzrite pic you used way back on page 1. I've taken readings off the pots and they're a bit odd.

The Si Fuzzrite pots are 330K or 350K audio (most likely 350K). That's a non standard value nowadays, so you can use 500K (like the fuzzbrite). This is true for both the phenolic board and sprague module models. The pot codes are the same on both, so both pots are the same.

The Ge Fuzzrites used 500K audio for the depth control and 500K linear for the volume control.

You can use a 500k pot and solder a resistor in parallel across lugs 1 and 3 to get closer to the value you want.
1/Rtotal = 1/R1+1/R2
Use this page to calculate the values you need:

Here's a good pic showing the cap on the switch. It's 4.7uF
(it's not letting me embed images properly as they're too big)

Here's the pot code

This is the pot code from a Foxey Lady, which is a Sprague module Fuzzrite ... tcode1.jpg

Just out of interest, this is thepot code from a 66 Ge Fuzzrite ... 33b746.jpg

Hit me up if you need any more info/pics

FWIW, I'm convinced that's a Fuzzrite in the Hendrix clip too.