[sdiy] Crumar Performer - TDA1008 (was Keyboard assembly)

[Mike Brown]

Anyone know anything about the TDA1008 chip in this thing?

I have a dead one also that I've been meaning to cannibalize... I didn't
even realize it had some SSM chips either until I saw JH's schematics.

MB

-----Original Message-----
From: owner-synth-diy at dropmix.xs4all.nl
[mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of
jhaible at debitel.net
Sent: Thursday, February 17, 2005 1:37 AM
To: Jimmy .
Cc: synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] Crumar Performer - Keyboard assembly




> Could I use a dead Performers keyboard assembly as the basis for a cv/gate
> synth?  I see there is a gate output on the back of the performer.. but
I'm
> wondering how it generates CV.  Since every note is playable, I'd imagine
it
>
> is some sort of top down divider scheme to generate the tones.. but I'm
not
> too sure how those really work.  Can I get a cv out from this thing?
> -Jim

It's top down divider stuff, and it doesn't create any keyboard CV.
It's a quite interesting machine nevertheless.
I've scanned the schematics and put them up there:
http://www.oldcrows.net/~jhaible/mixed/crumar_performer_jh.pdf

JH.


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