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| Created | November 05, 2025 |
| Last modified | November 06, 2025 |
| Tags | fuzz-circuit |
3-Voiced Fuzz Circuit with 2-Band Baxandall Tone-Control
3-voiced fuzz circuit with 2-band Baxandall tone-control. Controls Include: Drive, Fuzz Gain, Fuzz enable switches (three, separate), Fuzz symmetry switches (six, with 2 settings each), Fuzz Level, Direct Gain, Direct Level, Bass, Center, Treble, and Volume. Usable Range: 23 Hz to 6.8 kHz. Maximum Total Gain = 15.7 dBV (To/Ti = 6.1) with all control settings at 50%. Maximum Total Gain = 19 dBV (To/Ti = 8.9) with both Gain controls at 100% but all other controls at 50%. Circuit suitable for 6/7/8-string guitar or 4/5/6-string bass, with emphasis on lows and mids, but with highs falling off rapidly above 6.8 kHz. Power-supply not shown. Requires regulated dual-polarity supply providing one of the following: +-9VDC or +-12VDC or +-15VDC, at >= 4 mA per op-amp (e.g., 20 mA total). Fuzz voices are from different types of diodes, and are enabled/disabled separately. Fuzz 1 is from germanium diodes, Fuzz 2 is from Schottky diodes, and Fuzz 3 is from standard silicon diodes. Symmetry switches (SSW) set harmonic content of fuzz. With all diode arrays disabled, circuit will function as a moderate-gain booster with 2-band tone.
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