[sdiy] Elka Synthex VCO (was: Other dedicated V-to-freq chips)

[Aaron Lanterman]

On Apr 20, 2008, at 10:06 PM, Magnus Danielson wrote:

> I just recalled that the Elka Synthex uses a pair of high frequency  
> V-Fs which
> is divided down in a organ style. The waveshaping is done using  
> counter tricks
> while modulation is done on the HF generators. The benefit is low  
> need to trim.
> Too lazy to dig up the schematics, but I could do that if needed.

Sound doctorin' website comes through:

http://manuals.fdiskc.com/flat/Elka%20Synthex%20Schematic.pdf

See board 410CST5840, there's LF331s all over it.

Goodness gracious that is one monster of a synth. There is an insane  
amount of digital logic chips in it.

- Aaron