Elektor Formant synthesiser

The Formant analog modular synthesizer designed by C. Chapman was published in 1977/78 as a series of articles in the European magazine Elektor. The articles were later compiled into a book and a year later there was another book, (not in English) with additions and extensions by M. Aigner.

Description
The Formant uses the 1V/octave control voltage standard.

The front panels are 6U to match up with the size of the double Eurocard (200 mm x 160 mm) VCO PCB, the other PCBs are single Eurocard (100 mm x 160 mm). This was already a standard format PCB for Elektor projects.