[sdiy] Polymoog Resonantor Clone PCB preview

[Tom Wiltshire]

Thanks both.

Looks like it's a pretty straight-forward State Variable Filter  
design, done three times for the different bands. Right out of the  
cookbook, in fact. But it's a good choice for the application, since  
you get independently variable Q and Frequency, and can have HP, BP  
and LP outputs. Pity that you can't select the output for each band  
individually - there's a suggestion for any builders. Also (Sorry JH)  
I'd definitely dump the crummy op-amps in favour of something better.

T.





On 12 Aug 2009, at 17:11, Florian Anwander wrote:

> Hello Tom
>
> a scan of the service manual is here:
> http://fa.utfs.org/diy/polymoog/index.html
> I will post also a screenshot of the resonator only.
>
> Florian
>
>
> Wiltshire schrieb:
>> Hi JH,
>> Have you got a schematic for this that we can see?
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