Moog Satellite Odd Board Revision

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Moog Satellite Odd Board Revision

Postby Don T » Wed May 30, 2012 2:55 am

I've tried to be helpful here a few times, and now it's my turn for help, and I hope I've stacked up enough good Karma in this case:

I've got two of these boards that came in with a pile of Moog Satellite parts I purchased awhile back. I knew of three different revisions of Satellite main boards, but this is a fourth, apparently later version for which I cannot find ANY info. The boards are obviously rigged for use inside a Thomas or CDX-0652 (White Elephant) organ, and the low-pass filter section and "modulator" section is completely different.

First, the "Standard Board", from a normal, non-organ-installed Moog Satellite:

Image

And the section of the normal Satellite board relevant to this post:

Image

Now the "Mystery" board:

Image

And the relevant section of the "Mystery" board:

Image

It appears at first glance that the normal low-pass filter (which is actually a 12dB Moog ladder) has been replaced by an OTA-based 12dB filter similar to the main VCF. I probably could flip it over and trace the circuit in my "Spare time" (yeah, right :mrgreen: ) but I have become a bit lazy in my old age.

If anyone can offer any assistance, info, or even a link to a service manual that addresses this version I would be most grateful.

By the way, I've been working on three different Satellites and a Minitmoog, and in the course of doing so I have found MANY errors/differences in the schematics and parts list. As soon as I wade through all this stuff, I plan on posting some corrections later. One thing I'll mention up front in case anyone is considering using a main board from a Thomas Organ inside a regular Moog Satellite: It WON'T WORK without quite a few (albeit easy) modifications.
Don Taylor

Master of no trades, practitioner of many.
(Basically, this means I know just enough about a lot of things to get myself in real trouble)
Don T
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Posts: 303
Joined: Wed Oct 19, 2011 8:28 pm
Location: Marietta, GA
Real name: Don
Gear: Roland SH-09, Korg Polysix, Moog Rogue, Realistic MG-1, Paia Fatman, Korg Monotron, and of course, my main instrument: Trumpet!

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Re: Moog Satellite Odd Board Revision

Postby Don T » Mon Jun 04, 2012 2:01 am

bump.
Don Taylor

Master of no trades, practitioner of many.
(Basically, this means I know just enough about a lot of things to get myself in real trouble)
Don T
Supporting Member!
Supporting Member!
 
Posts: 303
Joined: Wed Oct 19, 2011 8:28 pm
Location: Marietta, GA
Real name: Don
Gear: Roland SH-09, Korg Polysix, Moog Rogue, Realistic MG-1, Paia Fatman, Korg Monotron, and of course, my main instrument: Trumpet!


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