RS-Timbre Fuzz V6 PUBLIC

High-Gain 4-Voiced Diode-Fuzz with 3-Band Tone

High-gain 4-voiced diode-fuzz circuit with 3-band active tone and 4 stages of gain. Controls Include: Input Gain, Drive 1, Fuzz 1 enable switch, Direct Send, Fuzz 2 enable switch, Fuzz Attenuation, Fuzz 3 enable switch, Fuzz 3 symmetry switches, Fuzz 3 Depth, Fuzz 4 enable switch, Fuzz 4 symmetry switches, Fuzz 4 Depth, Drive 2, Bass, Mid, Treble, and Volume. The Fuzz voices are from (1) red LEDs in a feedback array, (2) germanium diodes in a shunt-type array, (3) standard silicon diodes in a shunt-type array, and (4) Schottky diodes in a feedback array. The LED array affects the Direct signal which does not pass through the Tone controls. The two symmetry switches in arrays 3 and 4 set the harmonic content of the fuzz from those arrays. With all four Fuzz Arrays disabled, the circuit performs as a high-gain booster with 3-band tone. Fuzz 1, 2, and 3 have little affect on total gain, though they do clip the signal, but Fuzz 4 cuts total gain by as much as -2.5 dBV. The circuit's frequency range is from 58 Hz to 16 kHz with all controls at 50%. Suitable for 6-string electric guitar (not for 7/8-string guitar or bass-guitar). Maximum gain = +26.7 dBV @ 1 kHz with all controls at 50%, and more than 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. Note: Higher supply voltage results in lower op-amp noise. And while simulator verified, treat the circuit as experimental. Breadboard test before soldering.