Univox Squarewave Fuzz - New Vero

[Toney]

My take on a Univox Squarewave layout.
This thing originally used 2sc1312 and 2sk34c but it sounds great with a 2n5088 and a J201. To bring this to life it really needs to be tuned via emmiter and source resistors so temporarily using pots and then soldering in fixed resistors is the go. I build this a few years ago from the gallery layout but I found it has has several errors.

Original schem:
http://www.univox.org/pics/schematics/squarewave.jpg

Clearer updated schem:
http://fuzzcentral.ssguitar.com/schematics/squarewaveschem.gif

Discussion:
http://www.diystompboxes.com/smfforum/index.php?topic=95551.0

[pinkjimiphoton]

far out, something to build tonite!!!

got any clips of how it sounds?

[Greenmachine]

http://www.youtube.com/watch?v=gekG0K_ZokA

whew, it sounds ... nasty (in a really cool way).

[Toney]

F-ed up fuzz tone like 1972, 3AM in some dive and I should have gone home two hours ago?
Check. 

[Seven64]

how do you go about tuning it?

[Toney]

Just temporarily solder in two pots instead of the marked resistors, set @ ~1k and ~4k .
Twiddle till it sounds good/not gating etc. Measure, then replace with closest value resistors.