[sdiy] CEM/SSM chip availability?

[Anthony Rolando]

Daryl, are you using a microcontroller in the project? I ask because the 
3372, 3391 were both designed with digital control signals in mind.

If you are looking for CHEAP and Easy VCF and VCA look no further then the 
LM13700. Get the Data Sheet from National Semiconductor, it's all there!

TR


>From: "dj hohum" <djhohum at gmail.com>
>To: "Bob Weigel" <sounddoctorin at imt.net>
>CC: Synth DIY <synth-diy at dropmix.xs4all.nl>
>Subject: Re: [sdiy] CEM/SSM chip availability?
>Date: Sun, 10 Jun 2007 02:06:25 -0700
>
>Hi Bob,
>
>I don't want to take them out of someone else's scrap bin. I was
>hoping that perhaps some of the chips that were still used after
>analog VCOs in polysynths was dead as a concept, might still be
>available at reasonable prices.
>
>So let me be clear, I do not have a repair project for which I need
>them. I'm just trying to ascertain if the state of availability of all
>of the CEM/SSM chips is roughly equivalent or if some are more
>available than others. I suspect that the latter chips are more
>available if one knows where to look for them.
>
>As far as the korg chip goes I was hoping that perhaps it might still
>be available from korg directly, but given the offers I received in my
>email, I suppose not.
>
>I'm looking for a bunch of filter+vca on a chip for a project and so
>I'm not looking to spend a bunch of cash on them or deplete the repair
>reserves. If they are going for large amounts of money like original
>CEMs then I'll either use the 3391 which is $15 from synth tech, or
>I'll find a dusty DW-8000/DW-6000 and sacrifice it to the DIY gods.
>
>Ideally I'd like to find 3372s (if I can't find the korg chips), but
>they seem to be somewhat rare also.
>
>If anyone knows of a source that has any of the newer CEMs in
>reasonable quantity at a reasonable price, then by all means, let me
>know.
>
>Thanks,
>Daryl
>
>On 6/10/07, Bob Weigel <sounddoctorin at imt.net> wrote:
>>I often have a few for people in a fix.  But I also have the Korg
>>filters I can pull from a good analog board I have scrap.  Hope to do a
>>project with them some day but I can sell some if you are interested.  
>>-Bob
>>
>>dj hohum wrote:
>>
>> > Hi All,
>> >
>> > I'm curious if anyone knows other sources than Paul S. for the less
>> > desirable CEM/SSM chips. In particular, any of the following:
>> >
>> > CEM 3328
>> > CEM 3372
>> > CEM 3379
>> > CEM 3391
>> > SSM 2045
>> > SSM 2056
>> >
>> > Also, related, does anyone know if the korg 2069 filter used in the
>> > DW-8000 is still available from korg?
>> >
>> > Thanks,
>> > Daryl
>> > _______________________________________________
>> > Synth-diy mailing list
>> > Synth-diy at dropmix.xs4all.nl
>> > http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>> >
>> >
>>
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