His latest
Voltage Controlled Spring Reverb module is a eurorack spring reverb module that has a circuit that is inspired by a few other synth designers.
The end result is a spring reverb module with a few interesting extras...
For example, this design features a voltage controlled vactrol crossfader that you can also use independently.
In the following videos Tom shows us what the module can do.
Video 1: Music Thing Modular Spring Reverb
" Spring reverb module for Eurorack modular synths. Audio is slightly out of sync with video, sorry. Full details below...
Controls: Top knob is reverb level.
Right hand smaller knob is Tilt, a simple hifi-style tone control that changes the colour of the reverb.
Left hand smaller knob is Control, an attenuverter control for the incoming CV. 12 o'clock = no CV, clockwise = increasing CV, anticlockwise = inverted CV.
Patch: DPO sine waves sequenced by Turing Machine and Wogglebug. Gated through QMMG, envelopes from Maths. The CV input makes 80s-style gated reverb and pseudo-reverse reverb possible.
For this demo, using a 9EB2C1B full sized reverb tank. "
Video 2: Music Thing Modular Spring Reverb Crossfade Mode
" The MTM Spring Reverb contains a vactrol crossfader that you can also use independently. Here, it is crossfading between the DPO Final and Square outputs.
The module can be built with either a Silonex or a VTL5C3 vactrol. The VTL5C3 sounds smoother for this use, with a slower response that can be 'pinged'.
Video and audio are slightly out of sync, sorry. "
This is again an open hardware project – all the project files (Eagle CAD projects, Gerbers PCB files, a Mouser BOM and Illustrator/PDF front panel designs) will be available soon on his
web-page, covered by a Creative Commons Attribution Share-a-like license, which allows for commercial use.
Update 26/10: Documentation and schematics now available via http://musicthing.co.uk/modular/?page_id=579
