FC's Music and Audio Circuits

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Solar Charge Controller	Dark Activated Switch	Low Voltage Disconnect	Battery Voltage Monitor

Audio Circuits

• Vacuum Tube Stereo Microphone Preamp for making low-hiss recordings
• Automatic Stereo Shut-Off powers down amp after a long period of silence
• Stereo Audio Isolator eliminates hum in audio lines
• Stereo Test Tone Generator for audio calibration
• Hammond AO-44 Reverb Amp to Hi-Fi Amp Conversion mono block 6GW8/ECL86 tube amp
• Low Power 6U8A Vacuum Tube Audio Amp V2 simple one tube utility amp
• Low Power 6U8A Vacuum Tube Audio Amp V3 two tube utility amp with higher gain
• Voltage Controlled Panner Circuit pans audio left and right
• Universal Musical Interface Just a picture for now

Electric Guitar Amplifiers

• Hammonator 1 Hammond AO-14 Organ to 18W Guitar Amp Conversion with push-pull 6V6 or 6L6 tubes and reverb
• Hammonator 2RVT Hammonator with pitch-shifting vibrato, tremolo and other boutique tweaks
• Lil' Tiger AO-43 Organ to 15W Guitar Amp Conversion with reverb, pitch-shifting vibrato and tremolo
• Basserator (New) AO-63 Organ to 40W Bass/Guitar Amp Conversion with push-pull 6L6 tubes
• Spartacus AO-44 12W Guitar Slave Amp conversion, a basic 6BQ5/EL34 push-pull tube amp
• Spartacus Max (New) AO-35 15W Guitar and Monoblock Amp conversion, a 6L6 push-pull tube amp
• The Squirrel Monkey One Tube Guitar Amp tiny 6AF11 class-A tube practice amp
• The Howler Monkey Push Pull 5W 6AQ5 Guitar Amp uses seven pin power tubes
• The Sol-Man Solar Powered Electric Guitar Amp solid-state amp with spring reverb
• Vacuum Tube B+ Delay automatic power sequencer for tube amps
• A tale of two Fender Twin Reverb amps restoration and modification of 1969 and 1972 amps
• Hot-Rodding a Fender Princeton Reverb amp restoration and modification of a classic amp

Electric Guitar Effects and Miscellany

• Automatic Leslie Speaker Controller for a model 31H High Boy cabinet
• Liquidator Tube Phaser/Chorus Effect three stage tube phaser/chorus effect
• Squasherator Tube Compressor Altec 436c circuit with extensions
• FuzzniKator Push-Pull Tube Distortion/Preamp improved push-pull tube distortion
• Fuzzy Firebottle Guitar Distortion Pedal single-ended tube distortion
• Rev 2 Guitar Reverb Circuit improved solid-state design
• Rev 1 Guitar Reverb Circuit old design, obsolete
• Nine Volt Battery Eliminator for guitar pedals, radios etc.

Low Frequency Oscillator (LFO) Circuits

• Panner Waveform Generator multi-waveform CV source for Voltage Controlled Panner and analog synthesizers
• Arduino LFO Waveform Generator V1 DAC0808 LFO circuit
• Arduino LFO Waveform Generator V2 MAX522 LFO circuit
• Also, see the Hammonator 2RVT LFO which uses an EPROM chip and a DAC0808.

Related Sites

• Fractal Music
• Analog Music Synthesizers
• The Strat Monger electric guitar and amp resources

Back to FC's Electronics Circuits page.