Does anyone know if the Old School can be modified with a MIDI OUT jack?
I haven’t looked inside one, but since the keyboard responds to velocity and aftertouch I’m assuming there is some sort of modern digital (gasp) type of keybed in there, so I’m wondering if that also means there is MIDI → CV conversion going on inside.
The Old School would be perfect for me if it just had a MIDI OUT jack on the back.
And I’m sure someone will suggest just getting a normal Voyager, but I can get an OS cheaper right now.
Those things will be worth a lot of cash someday, I recommend keeping it stock
Well, I don’t have one (yet).
And I’m only talking about adding one MIDI OUT jack on the back - not a major chop job.
And only if it doesn’t require replacing the existing keybed, which is why I want to know what is inside already.
Just curious.
Having had a Voyager Old School, I can tell you that, yes, the keyboard scanning is a digital circuit ( 
), but ONLY locally. As soon as a key is pressed, its digital values (note, velocity) are quickly converted to an analog control voltage by an on-board DAC. However, the aftertouch (pressure sensor) is all analog.
So while it’s theoretically possible to intercept those digital values before they’re being converted, it would only allow “note-on”, “note-off”, “note value” and “key velocity” MIDI messages to go out. Nothing else, since absolutely everything else is purely analog.
It’s a very, very simple circuit with a PIC, and that’s why note priority is not even selectable. Also, the Old School doesn’t work on a precise 1V per octave basis (to cut the additional cost of a calibrating circuit) so the CV generated by that digital scanning circuit isn’t truly compatible with other 1v/Oct synths without some sort of offset capability.
You’re much better off buying an inexpensive MIDI keyboard controller than trying to make one out of the Old School… 
Yep, sounds like it. Thanks for all the info - greatly appreciated.
I still want an Old School some day, but I’ll have to stick with my Little Phatty for now.
Old School RME, who knows? 