Elektor Formant synthesiser

An Elektor Formant seen from the front.
An Elektor Formant seen from the rear with the back panel off.

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.[1]

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.[2]

List of magazine articles

Issue Month Year Article name Author PPNo Comments Corrections
025 May 1977 Formant – the Elektor Music Synthesiser (1) C. Chapman 5-14 Introduction to synthesizers and basic operation of Formant
026 Jun 1977 Formant – the Elektor Music Synthesiser (2) C. Chapman 6-14 Kbd and kbd interface
029 Sep 1977 Formant – the Elektor Music Synthesiser (3) C. Chapman 9-42 Kbd resistance divider, kbd case and description of PSU and module case Mar 78, 3-07
030 Oct 1977 Formant – the Elektor Music Synthesiser (4) C. Chapman 10-40 Discussing VCO and waveforms Jan 78, 1-31
031 Nov 1977 Formant – the Elektor Music Synthesiser (5) C. Chapman 11-41 Construction and adjustment of VCO Jan 78, 1-31
032 Dec 1977 Formant – the Elektor Music Synthesiser (6) C. Chapman 12-27 VCF Feb 78, 2-16
033 Jan 1978 Formant – the Elektor Music Synthesiser (7) C. Chapman 1-34 ADSR
034 Feb 1978 Formant – the Elektor Music Synthesiser (8) C. Chapman 2-10 Dual VCA
035 Mar 1978 Formant – the Elektor Music Synthesiser (9) C. Chapman 3-26 LFO and noise source
036 Apr 1978 Formant – the Elektor Music Synthesiser (10) C. Chapman 4-33 Control and output module, wiring diagram, expansion possibilities
041 Sep 1978 24dB VCF C. Chapman 9-43 24 dB HP/LP VCF
042 Oct 1978 Resonance Filter Unit Not Given 10-12 Resonance filter
046 Feb 1979 Formant – An invitation for our readers Not Given 2-39 Requesting reader contributions
058 Feb 1980 FET Opamps in the Formant Not Given 2-09 Upgrading the FET buffers to FET op-amp buffers
063/064 Jul/Aug 1980 Legato gate interface for Formant M. Bertuch 7-15 Adding legato (Summer Circuits 20)
[3]

Further reading

  • Formant-Pro - Modulares Sound-System MSS 2000 by Hans-Joachim Helmstedt, Elektor-Verlag, 2000, ISBN 3895760994[4] - "don't buy, cheap-quick-and-dirty approach"[5][6]

References

  1. ^ Rick's electronic-music projects, Formant by Rick Jansen
  2. ^ Elector Formant synth, Mod Wiggler Forum, Dec 2013
  3. ^ Compiled by Mike Gorman from the original magazines
  4. ^ FYI: new Elektor Formant book, Synth-DIY email list, 25 Oct 2000
  5. ^ new Formant book arrived, Synth-DIY email list, 6 Nov 2000
  6. ^ Customer reviews, Amazon.de

External links