RS-Timbre Fuzz V4 PUBLIC

3-Voiced Diode Fuzz Circuit with 3-Band Tone

3-voiced diode-fuzz circuit with 3-band active tone and 4 stages of gain. Controls Include: Input Gain, Input Attenuation, Fuzz 1 enable switch, Drive 1, Fuzz 2 enable switch, Fuzz 2 symmetry switches, Fuzz 2 Depth, Fuzz 3 enable switch, Fuzz 3 symmetry switches, Fuzz 3 Depth, Drive 2, Bass, Mid, Treble, and Volume. The Fuzz voices are from (1) germanium diodes in a shunt-type array, (2) standard silicon diodes in a shunt-type array, and (3) Schottky diodes in a feedback array. The two symmetry switches in arrays 2 and 3 set the harmonic content of the fuzz from those arrays. With all three Fuzz Arrays disabled, the circuit will perform as a high-gain booster with 3-band tone. Fuzz 1 and 2 have little affect on total gain, though they should affect the sound of the signal (by clipping), but Fuzz 3 will cut total gain by as much as -2.5 dBV. The circuit's frequency range is from 40 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 = +26.6 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. And while simulator verified, treat the circuit as experimental. Breadboard test before soldering.