[sdiy] Why no Roland filter clones?

[Jason Proctor]

AFAIK there's only the Curetronic 100M clone and the Oakley COTA.

i think Rob from emulatorarchive might have some clones too.



>If I am wrong in this, please direct me to the correct answer, but...
>Why is there no modular filter clones of Roland VCFs? (I know that 
>there are many TB-303 clones)
>There are a lot of filter clones from famous manufacturers/synths, 
>like Moog ladder filter, Korg MS-20, VCS3 filter, Yamaha VCF, 
>Oberheim clones, Wasp filter etc., but I have (so far) not come 
>across any clones of the Roland SH-series VCFs or other Roland early 
>filters (except for the TB-303 clones).
>These Roland filters were mostly made with CA3080s and/or 
>transistors so they should be fairly easy to copy. The later analog 
>Roland synths started using custom chips, like the IR3109 chips 
>etc., but the earlier synths have ordinary VCFs that sounds great.
>There might be a copyright side to it that I am not aware of, but 
>none of the bigger brands (doepfer, MOTM, Oakley, synthesizers.com, 
>Blacet etc. etc.) seem to have anything like the Roland filters, but 
>lots of other (good and interesting) filters.
>So why is this?
>
>
>Terje Winther
>terje.winther at wintherstormer.no
>http://www.wintherstormer.no/
>
>
>
>
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