6-Voice Shunt-Diode Fuzz Circuit PUBLIC

6-Voice Shut-Diode Fuzz Circuit with 2-Band Tone

6-voice shunt-diode fuzz circuit with 2-band James-style tone controls. The Fuzz voices are from six types of diodes in separately-selectable shunt-type arrays: germanium, Schottky, two standard silicon, and two LED. Controls Include: Trim, Fuzz Enable switch, 6 Fuzz On/Off switches, Fuzz Depth, Gain, Intensity, Bass, Center, Treble, and Volume. With Fuzz disabled, the circuit serves as a booster with 2-band tone. With Fuzz enabled, diodes reduce gain only slightly (< 2 dBV), while the symmetry switches set the harmonic content of the fuzz from each diode array. The circuit's frequency range is from 53 Hz to 19 kHz with all controls at 50%, but which extends in both directions with all controls > 50%. Suitable for 6-string electric guitar (not recommended for 7/8-string guitar or bass-guitars). Maximum gain = +25.2 dBV @ 1.6 kHz with all controls at 50%, or twice that with all controls at 100%. Power-supply not shown. Requires a regulated dual-polarity DC supply providing +-9VDC or +-12VDC or +-15VDC at >= 40 mA of current. And though simulator verified, treat the circuit as experimental. Breadboard test before soldering.