Goblin distortion unit

[Jason Stout]

Everyone, I have removed the goblin schematic and pcb files because of "issues" this little bugger is giving me..The whole story is that the goblin origionally had a different tone control and I made a pcb for that version, played it on and off for a month until I decided to experiment with the colorsound overdriver tonestack. The original pcb only required some small changes(one jumper and two hanging resistors) I then made a new pcb with the changes onboard(never imagined that the changes would be problematic). I just built it yesterday and as I said before..It has some issues :cry: I also noticed that the posted schematic was wrong, I cut from the wrong pspice project :x . so if you downloaded from my site, deleate the files and save yourself the headache...Next time it will be ready...
If anyone is wondering about the problems, the sound I am getting is ugly gate fuzz with lots of high freq hash (Totally unlike the prototype)..sounds like I replaced all coupling caps with 10uf electros,... may be oscillating. I can’t imagine this much parasitic capacitance between traces...bottom line-Don't build yet!

[Jason Stout]

I isolated the problems I was having...It was my layout. The amplifier was oscillating. If there is any interest I will post this layout with notes as an example of bad design and also to make this a more educational experience.