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Modded Tape Recorder

Modded Tape Recorder I modified this cassette recorder that already had a pitch control and added a second one. This gives you more playback range as you can go both fast or slow. It also has a pt2399 delay module with mix, time and feedback controls. Read More

Cassette Pitch Mod

Cassette Pitch Mod Pitch mod on a Sanyo M-1119 cassette recorder. There's a lot of info out there on how to add a speed control to a cassette player,  it's just a matter of finding the right points on the board and attach a potentiometer to them. Read More

SupaLoopa

SupaLoopa Got the chance to meet Alwin Weber from Circuit Circle at a Mutan Monkey Instruments workshop and had a blast building his kits and talking about his experiences in the diy and circuit bending scene. The SupaLoopa is his take on the classic ISD1820 sampler/looper with a pitch control mod, straight from the board.… Read More

ISD1820 Filteroid

ISD1820 Filteroid Mainly used as a sampler/looper, the ISD1820 chip is used here in feedthrough mode. This turns this circuit from Synthlurk into an audio processor that can be used as a filter, amplifier, fuzz, suboscillator, noise generator or distortion unit. Check this thread on LMNC Discourse group to learn more about it. Read More

Heterodyne Peyote Space Explorer

Heterodyne Peyote Space Explorer The Peyote version from this Beavis Audio Research lo-fi synth has three independent square oscillators, a complex wave form generator, a white noise circuit and a mixer . This build has some changes from the original schematic though: I found out that the white noise circuit was mostly silent, so I changed it… Read More

Mid-Fi Electronics Clari (not)

Mid-Fi Electronics Clari (not) Based on the noisy PT2399A chip, this crazy pedal from Mid-Fi Electronics is a delay/fuzz/vibrato/modulation/unstable tape simulator/weird noise thingy that brings that cassette lo-fi vibes and strange modulated echoes. This version is modified to include a switch to turn off the fuzz, leaving you with a clean weird noise thing if you… Read More

Peyote Drum Explorer

Peyote Drum Explorer A noise/rythm variation on the Heterodyne Peyote Space Explorer circuit, you can find all the info to build it here. Read More

Heterodyne Space Explorer

Heterodyne Space Explorer A classic Beavis Audio Research CMOS synth, this flexible tone generator is comprised of four 40106 square wave oscillators. The supply voltage can be sagged to create starved sounds as each oscillator competes for voltage. Each output stage goes to a switch that flips between a resistor mixer and a diode mixer. Each… Read More

Little Boxes

Little Boxes Little boxes is a series of video clips by CuSi Sound that showcase relatively easy audio circuits that run off 9 volt batteries and are housed in little boxes. The channel is a great starting point if you're thinking of building diy synthesizers and don't know how. These are the ones i've built so… Read More