[sdiy] Elektor Formant synth build

[Vinicius Brazil]

Hi Josh,

I built this synth around 1979.
Sonically it is a very interesting synth.

Some chips are very difficult to be found nowadays and are very expensive.
One is the uA726C (as well as AD820).
As does not affect the sound directly, it can be replaced.

Another difficult item is the CA3080, one of the first OTA generations.
With some creativity the CA3080 may be replaced by another OTA without
significantly affecting the sound, since the CA3080 features perceptible
variations from one CI to another...

Apart from these details, it is an easily constructible synth.

Vinicius Brazil

VBrazil Systems


On Sun, Nov 8, 2015 at 11:02 AM, josh wilkinson <j_wilco at hotmail.com> wrote:

>
> Hello All,
>
> My name is Josh Wilkinson, i am part of a Hackerspace in Brisbane
> Australia.
>
> Myself and a group of electronics enthusiasts (ranging form electricians
> to programmers to mechatronics) are keen to build the Elektor Formant synth.
> We have been reading book 1that was published with all the schematics and
> notes in it.
> Has anyone had any experience building this synth?
>
> Our main priority obviously is generating a proper PCB file that we can
> replicate for the modules. Has anyone already converted the PCB schematics
> in the book to Gerber files?
> If anyone has and feels like sharing that would be incredibly helpful.
>
> Also any leads on tracking down the tricky Fairchild chips?
>
> Really any experience with this build would be appreciated.
>
> Cheers,
> Josh and HSBNE Crew.
> Sent from my iPhone
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