I stumbled across this while looking for something else - so had to drop it in here. It's a pretty weird looking circuit, and there are some really strange ideas about fuzz mentioned - including placing clipping diodes across the speaker terminals of an amp. I would not try that at home.
Just some historic speaker info from 1967 - although I had to leave a page of advertisements in, as it has a kit for a fuzz box available from Moody. For those not from Australia, Moody was a guitar amp brand, which was one of the big names back in the day. I had no idea that they delved into kits.
