4-Voiced Bass Fuzz Circuit PUBLIC

4-Voiced Hard-Clipping Bass Fuzz Circuit with 3-Band Tone

4-voiced hard-clipping bass fuzz circuit with 3-band Fender-style tone-stack. Fuzz voices come from four different kinds of diodes; LEDs, standard silicon, germanium, and Schottky. Controls Include: Input Gain, Drive, High Cut, Fuzz enable switches (four, separate), Fuzz symmetry switches (two per diode array, with 2 settings each), Fuzz Depth, High Trim, Low Trim, Bass, Mid, Treble, Stack Sum, Output Gain, and Volume. Range is from 16 Hz to 16 kHz with all controls at 50%. Circuit is recommended for bass-guitar but will work for 6/7/8-string guitar with emphasis on lows. Maximum gain = +38 dBV @ 100 Hz with all controls at 50%, or +61.7 dBV @ 100 Hz with Gain, Drive, Stack Sum, and Volume controls at 100%, but all other controls at 50%. With all fuzz off, circuit will function as an overdrive. Suitable for stomp-box or rack-mount projects. Power-supply not shown. Requires a regulated dual-polarity DC supply giving +-9VDC or +-12VDC or +-15VDC at >= 20 mA of current. Though verified, treat as experimental. Breadboard test before committing to a soldered build. And house in a grounded metal enclosure.