Richard Brewster's Electronic Sounds

I had not planned another case so soon, but I had bought a 4ms Row Power 35 supply, thinking that my Row Power 30 was broken. Not broken, just the … Read More

Left to right: Swoop Spokes, DIY Quantussy, Large Tetrazzi PCB, Roolz 5-6, Meng Qi Rollz-5. The Patch The five outputs of Swoop Spokes patch over to the five Quantussy petals … Read More

Features Four oscillators with independent controls and outputs Saw, Triangle, Ramp variable shape output Pulse output with variable width Rise rate pot and CV input Fall rate pot and CV … Read More

I noticed a discrepancy of resistor values on the Large Tetrazzi silkscreen and graphic at the spots where the Upton/Donton and Upmod/Dnmod controls attach. All of these come through a … Read More

I built up a part of the Tetrazzi circuit for test purposes. Only the core VCO part were installed, around the 4051 switch and the TL082 op amp, plus the … Read More

Listening to some recordings I made three weeks ago and found this.

It can be hard to find just the right Eurorack modular case. I’m picky about the power supply and distribution. Most small, powered cases don’t have the kind of power … Read More

This PC board appeared in my mailbox, a gift from Josh Rodriquez. It’s hard to believe that it has been nine years since my Modular Tetrazzi project to put Peter … Read More

Three through-zero oscillators going through FX AID XL Karplus Strong and Mimeophon. Controlled by Rotating Clock Divider kicking off Stages envelopes.

I built this nice through-zero VCO from Weston Precision Audio. Features:Thru-Zero Linear Frequency Modulation5 wave shapes: Sine, Triangle, Sawtooth, Square, & PulseExtremely good tuning linearity (<+/-5cents over 10 octaves)Built-in high … Read More