Quote from: teemuk on July 21, 2006, 04:44:06 AM
The last two clips sounded very good. By swapping that fet you lowered the gain of the first stage, right? It really made a difference, IMO the first two clips sounded pretty bad while the last two had a "smooth" overdrive sound that I really like. Did you rebias or make any other changes (with MPF102 the circuit sounds less bright)?
I found the circuit to be a little brighter and "rounder"-sounding with the mpf102 in the first stage. The mpf lowers the gain of the first stage, wich affect all the other fet's aswell. IIRC, I had to rebias when installing the mpf. I had to do this at realy low volume, so it's not correctly biased. Thats why it sounds gated and fuzzy. When the bias is set correct you will have a very nice classic rock sound, without the "Fizz" you hear on the mpf102-clipps. (and j201, for that matter). I'll try tweaking it this weakend, and post some new clips, this time with a tuned guitar....
The circuit also have a huge volume-boost, so I think this could be a nice preamp for a chipamp. I'll test it as soon as I find a transformer for my lm1875 kit.