Simple modular DIY

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This page is intended as a format-agnostic (so, can be built for Eurorack, 4U, 5U etc.) list of simple but useful components that can be built for a modular synth.

If you're new to DIY electronics, please read the synthesizer do it yourself page first.

For more complex all-in-one synthesizer projects, see Category:Projects.

Entry level projects

Designed more for simplicity than high performance. Good enough to get an introduction to some basic principles of Synth DIY. Using just a handful of components and easily built on stripboard.

Passive circuits

Passive circuits don't require powering.

  • CGS real ring modulator and CGS real ring modem -
  • Moog passive filters -
  • Passive mult - Probably the easiest module to possibly build, all you need is some jacks, some wire, and a soldering iron. This module allows you to split a signal to be sent to multiple destinations. Passive mults are not suitable for V/octave CV control, because the voltage may drop when split, due to varying impedances in the destinations
  • Vactrol VCF - This can do interesting things right away unlike a VCO which doesn't do much interesting on it's own.

Active circuits

Active circuits need some Volts for power.

See also

Further reading

  • Electronic Synthesiser Construction by R.A. Penfold, Bernard Babani, 1986, ISBN 0-85934-159-3 - Typical Babani pocket-book. It contains details for making a basic synthesizer with the usual VCO-VCA-VCF voice, including an ADSR envelope generator, and several simple sequencer circuits. Online at E-Music DIY Archive.
  • Handmade Electronic Music: The Art of Hardware Hacking by Nicolas Collins, Routledge, 2009, ISBN 0-415-99873-5. A guide to the lowest tech electronic music possible; circuit-bending existing toys, moving on to building simple oscillators, filters, amplifiers using CMOS circuits. Simple, inspiring projects that work and will get you started in music DIY.
  • Make: Analog Synthesizers by Ray Wilson, Maker Media Inc., 2013, ISBN 1-4493-4522-0 - easy to read, contains a lot of practical advice about soldering and construction. A more accurate title would be How to build the MFOS Noise Toaster.

External links

General sources of schematics and layouts

Kits, PCBs and panels

This page has been split to Passive mult on 3 July 2019. The history of this page serves as the attribution history for the contents of that page, before then.