Distortion Series Breadboard Buddies

The Breadboard Buddies series are simple boards designed to be plugged into breadboards to ease the process of prototyping, and along the way I also built a number of distortion circuits into this form factor for my own experimentations into classic distortion circuits. I selected 6 circuits and went through them one by one, building …

5 months later …

I can’t believe that 5 months have passed since I had last posted! I’ve been busy: my Advanced Electronic Music class began at the Evergreen State College and I’ve continued to build several more Eurorack modules, as well acquire a number of ‘store bought’ ones. My single case of modules has ballooned out to 5 …

The System 700 Build is Complete

A post long in the coming, I’m announcing that all the electronic work is DONE on my Pharmasonic System 700 clone! I purchased a Hexinverter Mutant Brain to function as the MIDI-to-CV input for the synth and also picked up a black faceplate for the 4MS SISM so it wall match the rest of the …

The Big Sprint

I spent many hours yesterday checking components, replacing incorrect bits, testing and calibrating modules, but ended up at the end of this marathon session with the following additional fully working and calibrated modules: VCA 1 VCA 2 VCO 1 VCO 3 703C multimode filter LFO 2 Currently, all that remains is: Replacing a resistor on …

LFO 1 Troubleshooting continues and a storebought module digression

Alright, I know all posts so far have been about building my SYS-700 modules, but I wanted to take a moment to share my thoughts about some of the storebought modules that have made their ways into my racks. But first an update on LFO 1’s troubleshooting work. LFO 1 turned out to have a …

Troubleshooting Continues!

I’m elbow-deep in troubleshooting the 1st of the 2 LFO’s. It is oscillating fine, and is even outputting the various waveforms that it should be capable of with gusto. But the Frequency pot isn’t adjusting the frequency. Fortunately, the generous exports at Muffwiggler are assisting. Additionally, the IC’s for the Phase Shifter arrived from China, …