8/9/2008 added Judd's Auto Bell Gate - att/rel generator of sorts
31/8/2008
found some shelving brackets which serve nicely to make a rack for the panels, so added 2 pix.
7/8/2008
Finished the first section of this synth
The PSU uses a pooter power supply to get 6.3V for the heaters.
The main supply is +/-150V, this will be expanded as necessary.
Modules so far -
Two Eric Barbour (METASONIX) VCOs, schematics from CGS synth.
One of the VCOs has Eric's beam modulator built into it,
with two neon LFOs to do the modulating. The other is stock.
Two René Schmitz VCFs (with some help from René - Thanks!)
using 6021 submini triodes and 6AU6 pentodes.
These have sync'able neon LFOs driving the LDRs and outputs for the LFOs.
I have found these LFOs to be capable of chaotic behaviour when tuned carefully.
The VCfs can get a nasty liquid scream happening.
The VCA/mixer is from the Electronic Peasant's tube synth page. It is VCA #2 & #3 with the 600:600 transformer on the output. It works perfectly and sounds great. EP should be complimented for such a great design.
All connections are BNC. There is an interface panel with 3.5mm to BNC, via a DC amplifier, and BNC to 3.5mm, via a voltage divider. So far I have designed and etched PCBs for all of the modules as I intend to make a few more of each. The synth is built into 19" racks (from the Physics dept. dumpster as usual), so it will be easy to expand as time permits.
