Alpha Juno 2 mods?

[Jeroen Proveniers]

> -----Original Message-----
> From: CHoaglin at aol.com [mailto:CHoaglin at aol.com]
> Sent: Friday, December 01, 2000 5:30 AM
> To: synth-diy at node12b53.a2000.nl
> Subject: Alpha Juno 2 mods?
> 
> 
> I recently picked up a Juno 2 and have been fixing it up 
> (cleaned out the 
> ashes, changed the power jack to a standard 3 prong etc..)
> 
> From what I read and looking inside, I gather that it's an 
> hybrid synth with 
> DCO's. I remember seeing a 5517 inside (that's the filter, 
> right?). It's not 
> a great synth, as least not as good as my JP-8000, but, as 
> much fun as the 
> alpha dial is to spin, I'd like to add some real knobs to it 
> for controlling 
> the frequency and resonance, among other things. Preferably, 
> I'd like to 
> retrofit it with as many realtime controls as possible as 
> opposed to menu 
> driven. If anybody's got schematics for it, or knows of any 
> modifications, 
> I'd love to know about them. (I could reverse engineer it and 
> draw my own, 
> but that would take time I don't really have right now with 
> my academics)

You could buy a PG-300 programmer (I don't know the exact typenumber,maybe
it's a PG-200), then you have realtime controls of all parameters.
Everything inside the Juno is digitally controlled so I don't see how analog
control can be added.

JJ