[sdiy] Anyone have schematics for a Kimball Organ rhythm machine?

[aankrom]

On Wed, 25 Apr 2012 19:05:53 -0400, aankrom wrote:
I'll be experimenting with mine and I'll put together a PDF of what I 
figure out. The good thing is that the unit works.

AA

> The use of Japanese Ge transistors and a different "look" of the
> design compared to the rest of the Organ leads me to believe that
> Kimball did not design or manufacture this part of the organ, but I
> could be wrong...
>
> On Wed, 25 Apr 2012 18:46:28 -0400, aankrom wrote:
>> I have a  Kimball Organ rhythm unit from a 600/700 series (late 60's
>> early 70's vintage). The organ it came from had a service manual for
>> all circuits, but the rhythm machine. The organ used weird, unmarked
>> Ge transistors mixed in with some Si units. The rhythm generator is
>> mostly 2SB175's. Lots of bobbin inductors. I like the unit as-is, 
>> but
>> I'd like to know what's what. I'm curious about the circuits making
>> the percussion sounds. I'd also like to be able to trigger each 
>> sound
>> externally and perhaps modify the preset rhythms (the ones I don't
>> like. I'm making a box to hold the power supply, Ge power amp and
>> reverb unit and the rhythm unit all in one box. The organ speaker is
>> going into a large speaker box from an old RCA console stereo.
>>
>> AA
>> _______________________________________________
>> Synth-diy mailing list
>> Synth-diy at dropmix.xs4all.nl
>> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy