Similar to the Ibanez No 59 Standard Fuzz but with a different tone section and a few extra resistors. If you want a bit more overall output level, 47k resistor connecting to Balance 3 could be can be replaced with a small value or a jumper. Another useful mod is to sub the germanium diodes with silicons for more crunch and tighter, louder fuzz.
Hello, my superfuzz spree brought me here. I think you can mark the layout as verified - everything works. After testing, ended up jumpering the 47k and using Si diodes (stock layout is pretty low output). The Jfet input stage is interesting on these Ibanez Wau fuzzes, overall I feel this one is a bit of a "tamer" or more controlled character compared with the univox/shin ei design.
ReplyDeleteHowever, my build has a very high noise floor though - an omnipresent low rumbling that doesn't go away when lowering guitar volume - the audio probe pointed to the rectifier section with Q3 and Q4. It could be that I didnt match these transistors , or it could be the type (2n3904 all around for BJTs), or I could have used a bad electrolytic cap, or have a small build issue somewhere, I don't know, and I'm not going to look further - I think of this as an excuse to build another superfuzz :)
Thank you for the layouts!
Actually figured the issue out - put a 20k in place of a 10kohm... lol. No more motorboating, much more octave xDDD
DeleteLayout is great, can definitely be tagged
Did you replace all the 10k resistors with 20k? Or was it just one specific swap? If so? Which one?
ReplyDeleteWait - I misunderstood what you meant - I believe you are saying that the 20k was an error that you corrected... right?
ReplyDeleteIt was one specific swap (by mistake) - instead of connecting a 10k to Q3 and Q4 collector (7th row), I used a 20k...
ReplyDeleteI scavenged components from old scrap projects, and this little bastard actually looks a lot like a 10k