thanks for the reply Jeffrey,
i found schematics and voice board connector info today, apparently,
the board was from a blue obsx which is supposed to have the same
voice card as an ob xa. but a few questions remain!

i have a midi-cv converter and +15v -15v & -5v power supply (required
voltages)

there are a few connector ins/outs that are labeled but not
immediately obvious to me so i will try to get more info!

if anyone with knowledge of these machines would care to take a look
at this picture, perhaps it could help me determine the less obvious
connection points

http://i133.photobucket.com/albums/q55/neonleg/obxapinout.jpg

thanks!

--- In oberheim@yahoogroups.com , Jeffrey Nelson <nelsonj_sce@...> wrote:
>
> You will need to power it up, and then supply it with
> a gate and CV. A good place to start is a Midi to CV
> converter. You can get them off of Ebay around $75.
>
> The problem will be the power supply, you will likely
> need +/- 12V and +/-5V and others perhaps.
>
> The other problem is that you need to provide voltages
> for all of the envelopes, VCF filter and res...
>
> Finally, you need to build an final output stage for
> overall volume control.
>
> In short, it can be done, but it won't be easy. Not a
> simple project. Get a schematic first. Good luck.
>
>
> --- analogback <gehayman@...> wrote:
>
> > hello! i have an obsx voice board that i would like
> > to try and modify
> > in order to use it as a standalone monosynth.. does
> > anyone know if
> > this has been done before if its possible
> > obviously the boards
> > connector info would be a great help as well!
> > any info appreciated as i've scoured the net to no
> > avail :(
> > greetz
> >
> >
>