Field Supplies for Sound Exploration
Microphone schematics updated I noticed some naming errors in the 404 logs for a number of the microphone schematics, those have all been fixed (i think) and I’ll continue to watch the 404s for issues with files. Thanks, Happy Building! More Posts
New VOMITROIUMS available now! New graphics, new printed circuit boards (instead of vero), and a sound unlike others. The VOMITORIUM can go from zero sustain to a crazy noise artifact filled swirling mess. It is fun, it is different, and it will DESTROY YOUR SIGNAL! Also available on Reverb, if thats your thing.
The Hey Jude Sound Urchin Get weird with it! Not your usual Sound Urchin, I took this little Hey Jude music box and mounted it right above the 35mm piezo disc for ultimate impact. The music wire was chosen for its bell-like tone, and you just gotta have a spring these days. Crank the wheel, … Read more
Hex Schmitt Synth Calculator After building out the Fuzz Calculators I decided I wanted a helper to calculate the capacitor and resistor combos for simple hex-schmitt oscillators. These calculations are especially helpful when building polyphonic synths, and stuff that isn’t just a random noise source.
Fuzz Bias Calculators When building fuzz and overdrive pedals, proper transistor biasing is key to getting the tone, sustain, and response just right. The bias calculators help you set the correct DC operating point for each transistor stage so that your circuit behaves consistently and sounds its best. Using the Bias Calculators for Fuzz and … Read more
06/18/2025 – Recently updated with better explanation. Here is a stripboard layout that I did for cassette player speed mods. It is based on a drawing from the old Casper Electronics website. It only requires a small piece of stripboard (4×6 ) and 5 components. I am sure that there are other ways to affect … Read more
I created a backup site of the excellent Microphonium Schematic Archive. The sdiy.com domain that it resides at is up for sale and the rest of the site returns 404 errors or domain for sale pages. I tried to make it a little easier to read (less color), and little more search engine friendly. The … Read more
Sound Urchin Composer series instruments are always a little different They all feature resonant bowls, tiered threaded rods, and the Sound Urchin pre-amplifier circuit but vary based on what is available. #005 features a 5″ Urchin giving ample access to a resonant bowl that was harvested from an industrial fire alarm, it also features our … Read more
