audio circuits

audio circuits

by robert rose, rose@ece.orst.edu
thanks to martin vandepas vandepas@proaxis.com

recently i've suddenly become very interested in audio generation, modification, and tweaking circuits. this interest has prompted me to do a lot of searching on the internet for documentation and examples for how to build audio-related circuits. this web page is merely a storage place for the information i've collected. in no way am i an expert in electronics or audio electronics, so if you email me with a question, don't expect a sensical answer! :-)

i've grouped the circuits into several different groups, here are the groups and the cooresponding information i've gleaned in that area. if you'd like to view my complete collection, unsorted, click here.

distortion/guitar fx

angry beard iii
boss slow gear sg-1 attack delay
dod overdrive 250
distortion booster
electra distortion
electro-harmonix little big muff
electro-harmonix big muff pi
electro-harmonix muff fuzz
electro-harmonix soul preacher
fender bassman 5f6
simple fuzz
fuzz face
gretsch controfuzz model 7798
guitar effects unit (fuzz/octaver)
jimi fuzz-face
jordan boss-tone (fuzz)
jsh fuzz
maestro fuzz
mosrite fuzz-rite
mxr distrortion +
mxr hot tubes (fuzz)
proco rat distortion a
proco rat distortion b
the univibe
univox super-fuzz

power supply

clean 9 volt power supply

pre-amp/mixing/tone

dod compressor 280a
dod envelope filter 440
DOD product descriptions
a very simple equalizer (?)
em stereo spreader
tone booster
tone control units
vox tone bender
vox treble booster
simple guitar preamps
dual pre-amp and a/b box
a basic mixer

synth

these circuits could be used for almost anything, but i thought they were mostly useful when building a synth.

electro harmonix boosters
frequency brighteners
harmonic sweetener
kay tremolo model t-1
tremolo circuit
oberheim ps-1 phase shifter
eh small stone phaser
stage center reverb unit
a very simple tone generator

old-school tube stuff

master volume for tube amps
the "pipe bomb"
ts-9 tube screamer
tube fuzz
tube distortion

wah-wah

electro harmonix fuzz-wah
dunlop cry baby
foxx fuzz-wah
maestro boomerang
maestro boomer 2

misc/unknown

if anyone knows what these circuits do, please email me..

armstrong green ringer
blue clipper
olson new sound


thank you very much to the authors of the documents listed above, this page wouldn't exist without them!

links

no page would be complete without links!

School of Electrical Engineering and Computer Science, 1148 Kelley Engineering Center
Oregon State University, Corvallis, OR 97331-5501
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