Chuck D. Bones
Circuit Wizard
This was inspired by Music6000. He sent me pix of a pedal he bought called the Canaglia and a link to a schematic on FSB. A simple circuit, 3 knobs, basically an Electra driving a SHO. I made a couple of improvements to how the GAIN & DRIVE pots are connected and here it is.
This is a setting for medium overdrive with low-output pickups.
Knobs (L-R): LEVEL - DRIVE - GAIN
The GAIN knob controls how much diode clipping we get and the DRIVE knob controls how much MOSFET clipping we get. Even with the Tele's bridge PU, it was a little bottom-heavy, so I reduced C1 from 100nF to 15nF. With GAIN & DRIVE at noon, the freq response is flat (within 3db) from 100Hz to 10KHz. Turning GAIN higher reduces some of the bass and turning DRIVE higher reduces some of the treble. Quite a range of gain, compression and harmonic content depending on the knob settings. Plenty of output. Not all BS170s will bias the same, so I suggest trying a few.
This is a setting for medium overdrive with low-output pickups.
Knobs (L-R): LEVEL - DRIVE - GAIN
The GAIN knob controls how much diode clipping we get and the DRIVE knob controls how much MOSFET clipping we get. Even with the Tele's bridge PU, it was a little bottom-heavy, so I reduced C1 from 100nF to 15nF. With GAIN & DRIVE at noon, the freq response is flat (within 3db) from 100Hz to 10KHz. Turning GAIN higher reduces some of the bass and turning DRIVE higher reduces some of the treble. Quite a range of gain, compression and harmonic content depending on the knob settings. Plenty of output. Not all BS170s will bias the same, so I suggest trying a few.
