The Synharmonium modular analog synthesizer

See all photos here. (Warning: the big ones are... big.)

The Synharmonium

Figured I'd give you a brief presentation of my DIY modular analog synth. The basis of it is the Gene Stopp designed ASM-1 board, which I purchased from him in... must have been 1998 or thereabouts. The ASM-1 makes up all the top-row modules, from left to right: two VCOs, VCF, two VCAs, two ADSR EGs, and the last one is LFO and Glide and noise.

The Synharmonium

The bottom row of modules are (from left to right again): the power supply (based on a very nice Power One PSU), a patch panel (with power outlets at the top), a poorly made triple LFO, a double ring modulator of Juergen Haible design, and a spring reverb from an old Solina organ supported by a circuit based on a tech note by Roy Mallory.

The Synharmonium

The form factor is based more or less on the MOTM style which I like very much. Panels are made (with crude tools) of aluminum, and spray painted black before they are "decorated" with a silver marker. Works OK. Cheap.

The Synharmonium