Looks great! I'm interested to hear if you found any difference between the mojo and non-mojo versions.
What transistors/HFE did you end up using for these?
Also, those red electrolytics are very pretty.
Thanks! I just finished up the circuit board for the Ashy Larry version. Changed all the 100n caps to 220n and the output cap from 2.2 to 22n just to see what would happen, sounds pretty beefy! Also used a 2n4401 @ 240hfe in Q2. Don’t think it really did anything haha
I've seen a few Si tone bender schematics that use a higher gain 2N5088 in Q3 with 2n3903 in Q1 and 2 — the Farm mourning dove is like this as well. I tried this out on one of the ones I built and it does sound a bit more saturated I think. I also tried out some OC140 Ge and they give it a bit of a different character but IDK how much.
Do you notice much more noise with the carbon comps or are there not enough of them to notice a difference?
I just built one because you inspired me to! I used 2N3903s around the 120-140 hfe mark. I really like it! It's more usable than a Tonebender in some ways. Somehow I managed to bias mine so it gets a good vocal sound on single notes but has the lovely crackle to it with chords. I like the random weirdness and the fact it goes so low gain. This is pretty much a fuzz I've been looking for, which is so cool. It sounds big and solid at the same time as having some fabulous random crappiness - perfect. I only wish my build looked as cool as yours on the outside.
Not really much noisier than the film resistor version, no. There probably isn’t enough of them to make a difference! I left the Fuzz pot at B5K this time as I am out of C5K and I don’t mind it at all for the lower gain settings, it sounds cool. I only had a 5K trimmer so I can’t quite get it to bias properly, think I’ll swap that for a 20k multiturn and really dial it in.