[sdiy] What would be THE best, most versatile VCF available on DIY community ?

[Andrew Simper]

How about the Elka Synthex Multimode Filter (LP/BP/HP) as outlined
here: http://www.electricdruid.net/index.php?page=info.cem3320

It can be made from any ota core and provides "stronger" high pass and
band pass responses than the Xpander style summing of output taps.
I've got some IR3109s and some BA662s I'm going to give this a go
with.

Andy
--


On 28 May 2012 17:54, Tom Wiltshire <tom at electricdruid.net> wrote:
>
> For versatility, I'd go with a Oberheim Xpander type filter. E.g. a basic four-pole filter with selectable weighted outputs to provide a variety of responses. The underlying  filter could be whatever you like - Moog ladder, SSM2164, OTA, etc.
> Multiple daughter boards isn't a versatile filter - it's lots of different filters.
>
> Tom
>
>
> On 28 May 2012, at 17:08, Jean-Pierre Desrochers wrote:
>
> > I know this is a question of personnal tastes
> > but some winner designs are all around so...
> >
> > What would be THE best, most versatile VCF
> > available on DIY community ?
> > I'm talking about lo-pass, band-pass, hi-pass selectable
> > VCF with also 12db or 24db/oct selectable choice..
> > I'm starting to grab some ideas about a very good VCF.
> > The format doesn't matter since I'll finally retrofit it
> > to dotcom format.
> > So far the design that would please me would
> > be made of a motherboard designed from the lo-pass
> > Moog transistors ladder idea but ready (with pins or connectors)
> > to be emptied and 'accept' ARP type VCF daughter boards on top of it
> > with the needed 'frontend' driver/summers ICs  space
> > to completely change its design from a VCF module to another one.
> > Multiple VCF types with one motherboard and many VCF daughterboards
> > like the ARP 4012, 4035, 4072, 4075..(or other companies small PCB designs)
> > Here, I'd still have no band-pass, hi-pass type but
> > as I said I'm just starting of thinking of the possibilities..
> > Thanks.
> > J-Pierre
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