[sdiy] Siel opera6 schematics

[Bob Weigel]

PS again whatever it is that makes sonic state with all it's crummy 
broken links and all these other frivelous sites ranked higher than my 
site... I dunno.  But this is an example of why the crawlers aren't 
necessarily doing the best job of bringing good information to the top. 
  I'm down at the bottom of page two on a search for Siel DK600

neil.johnson97 at ntlworld.com wrote:

>Hi,
>
>Scott Nordlund <gsn10 at hotmail.com> wrote: 
>  
>
>>Also, does anyone know if there's any merit to the "some have VCOs,
>>some have DCOs" rumor?  I've heard it multiple times but never seen
>>anything to confirm it.  All of them that I've seen use the same SSM
>>2031 VCOs with TMS3631 dividers.  The only changes I know of are front
>>panel/program button designs, different OS versions, and CPU boards
>>with a separate noise generator board.
>>If true VCO versions exist, they must be very rare.
>>    
>>
>
>The only schematics I've seen are those from S.Meyer's Siel website.  They _only_ show the HF-VCO + dividers architecture.  My guess is that since you can describe this as VCO or DCO they mixed up terms between different models depending on the market conditions..?  I think 12 SSM2031 VCOs would be very expensive, and quite rare.
>
>Perhaps there is some urban-myth going on regarding the VCO/DCO?  Possibly stirred up by the panel marking, which may well have said 'VCO' and 'DCO' at various times / different models.
>
>Unless someone has concrete proof either way..?
>
>Cheers,
>Neil
>
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