2-Voiced Hard-Clip Fuzz w. 3-Band Tone PUBLIC

2-Voiced Hard-Clipping Fuzz Circuit with 3-Band Tone-Control

2-voiced hard-clipping fuzz circuit with 3-band tone-control. The tone-control circuit is a Baxandall type with mid-control added. Diode voices come from two different kinds of diodes; standard silicon and Schottky. Controls Include: Input Level, Direct Gain, Direct Level, Fuzz Gain, Fuzz Level, Fuzz type enable switches (F1 and F2, enabled/disabled separately), Fuzz symmetry switches (four, with 2 settings each), Fuzz Depth, Bass, Mid, Treble, Output Gain, and Volume. The symmetry switches determine the harmonic content of the fuzz. Range above 0 dBV is from 24 Hz to 20 kHz. Suitable for 6/7/8-string guitar or 4/5/6-string bass-guitar. Maximum gain = 24.9 dBV (Vo/Vi = 17.6) @ 1 kHz with all controls at 50%, or 34.5 dBV (Vo/Vi = 53) with all three Gain pots at 100% but all other controls at 50%. With the diodes disabled, circuit will perform as a moderate-gain signal booster with 3-band tone, with two gain stages in parallel. With any diodes enabled, volume of Fuzz Driver will be less than that of the Direct Driver, with the same Gain and Level settings. Power-supply not shown. Requires regulated dual-polarity supply providing +-9VDC or +-12VDC or +-15VDC; at >= 4 mA per op-amp (e.g., 20 mA total).