This site is primarily here to showcase the synth DIY stuff I've been doing.

Mostly it's centred around a gradually expanding Serge/CGS 4U modular, but I'll gradually start putting up some of the work I've done with the Bristol Communal Modular group as well.

Original Designs

• Dual PT2399 Digital Delay
• Ouroboros

Bristol Communal Modular

The Bristol Communal Modular group is a loose collective of people that meet at the Bristol Hackspace regularly to learn about, design, and play with synthesizers.

• Yorick - an ATTiny based mono-synth groovebox
• Magnum - a recreation of the Star Synare 3

Circuit Analysis

• CEM 3350 dual filter

Serge 4U Panels

• CGS Bringer of Groove
• CGS Vintage Voltron 3
• Edelweiss

4U Clones

Other peoples designs that I've adapted to 4U, or older Serge circuits I've created new projects for.

• Serge R6 Gate
• Spring Reverb
• Dual Variable Integrator + Non-Linearity
• Dual Simple Integrator

Utility

• Serge PSU

PCB Designs

• Banana Breadboard Helpers
• Transistor Matcher *TODO*
• Precision Attenuverter *TODO*
• Simple four channel amp *TODO*

Contact

Drop me an email at guy@rumblesan.com