Fuzz Maniac I Circuit PUBLIC

Kurtus Richter's "Fuzz Maniac I" Original Guitar Circuit

Kurtus Richter's "Fuzz Maniac I" original guitar-effect circuit, featuring two gain stages, choice of two fuzz voices, and a modified Fender-style 3-band tone-stack with custom part-values. The Controls Include: Attenuation 1, Input Gain, Fuzz enable switch, Fuzz Type switch (Deep or Normal), Fuzz symmetry switches (four, with 2 settings each), Fuzz Depth, Attenuation 2, Output Gain, High Trim, Low Trim, Bass, Mid, Treble, and Volume. Range above 0 dBV is from 25 Hz to 25 kHz, with emphasis between 40 Hz and 6.3 kHz. Low -3 dB corner is at 22 Hz. High -3 dB corner is at 28 kHz. Caution! High-gain circuit. Maximum gain = 54 dBV (Vo/Vi = 398) @ 250 Hz with all controls at 50%, or 59.3 dBV (Vo/Vi = 923) with both Gain controls at 100% but all other controls at 50%. Circuit is suitable for 6/7/8-string guitar or 4/5/6-string bass-guitar, in standard tuning. With the Fuzz disabled, the circuit will serve as an extreme-gain overdrive. Power-supply not shown. Requires regulated dual-polarity supply providing +-9VDC or +-12VDC or +-15VDC at >= 12 mA total circuit current.