Made it, it's awesome! Great circuit, bit noisy at max gain and can feedback loads, but I don't really go past about half way on the gain and push the input a bit for a bit of hair. Great for 60s classic rock and 90s style alt rock .
All high gain circuits create some noise. You’re over amplifying a passive signal. Unless you add a bias control to gate the effect, it’s going to make noise when you’re not playing. This is basically a silicon tone bender without much gating. Putting it in an enclosure will sometimes help.
Thank you for your answer. I understand that might be some high level of noise but this hiss is too big to my taste. Something is not right. Recently I had the same issue with vemuram Jan ray - overdrive pedal. I spend some trying to find issue but no result
Yeah, I don't know. I have built both circuits and don't have a clear memory of any excessive noise issues. Just giving the tracks a good scraping and cleaning solves many issues. I often set a confusing circuit aside and go back to it when I'm not pulling my hair out. Something may become obvious when you're chillin'. Also, I like to shine a flashlight through the board to see any obvious bridges or weak joints.
Any chance of ever seeing the giygas?
ReplyDeleteNot at the moment since I couldn't find a schematic for it.:-/
DeleteMade it, it's awesome! Great circuit, bit noisy at max gain and can feedback loads, but I don't really go past about half way on the gain and push the input a bit for a bit of hair. Great for 60s classic rock and 90s style alt rock .
ReplyDeleteSorry meant 70s
DeleteThe Catalinbread "Blood Donor" is almost identical, but has a much lower noise floor. Would be great to see a layout for that one, too.
ReplyDeleteIt's working but I have extremely big hiss. I tried built it 3 times and every time the same result, any ideas?
ReplyDeleteAll high gain circuits create some noise. You’re over amplifying a passive signal. Unless you add a bias control to gate the effect, it’s going to make noise when you’re not playing. This is basically a silicon tone bender without much gating. Putting it in an enclosure will sometimes help.
DeleteThank you for your answer. I understand that might be some high level of noise but this hiss is too big to my taste. Something is not right. Recently I had the same issue with vemuram Jan ray - overdrive pedal. I spend some trying to find issue but no result
DeleteYeah, I don't know. I have built both circuits and don't have a clear memory of any excessive noise issues. Just giving the tracks a good scraping and cleaning solves many issues. I often set a confusing circuit aside and go back to it when I'm not pulling my hair out. Something may become obvious when you're chillin'. Also, I like to shine a flashlight through the board to see any obvious bridges or weak joints.
Deleteshine a flashlight through the board might be an idea. I've never tried this. Thanks for your time
Delete