After I had sussed out the Cocoquantus schematic and understood the internal relationships among the five oscillators that Peter B. calls the Quantussy section, I began to wonder what it … Read More

The CGS Serge Wave Multipliers is the fourth and final module in my CGS Serge banana jack panel.  Please read Ken Stone’s CGS 113 notes. The board contains three independent … Read More

This is my take on the legendary Serge Smooth and Stepped Generator (SSG).  I received the SSG PC board as a compliment from Ken Stone, who designed the board.  The … Read More

The Serge Dual Universal Slope Generator may have achieved more renown than almost any other 1970’s era Serge module.  Ken Stone of Catgirl Synth makes the PC board.  See CGS … Read More

Quantity: 2 The Serge Dual Negative slew is one of my favorite 1970’s Serge modules.  Ken Stone made the CGS 82 PC board. The output tracks the input and gives … Read More

The CGS Serge panel had room for one small module, so I added this little mixer.   The simple design provides two attenuated inputs, plus a bias offset pot with a … Read More

My current project is underway. The panel was completed today (click the image for detail), but it’s only a facade. Behind the panel it’s empty. All of the modules are … Read More

The MOTM Modular is 5U with 1/4-inch phone jacks for patching. The Cocoquantus has screw heads for alligator clip patching. For patching between these I have made up some simple … Read More

After I received my Ciat-Lonbarde Tetrazzi Organ, I spent a lot of time delving into its design.  I wanted to understand it as well as possible in order to be … Read More

Quantity 1 Here is a DIY Mattson Mini Modular VCF in a MOTM panel.  George Mattson’s description: 4-Pole, 24dB/Octave State Variable Filter jointly designed by Synth DIY guru Jim Patchell … Read More