BassStation Filter: What is it?

[Bjorn Julin]

The bass station filter is nothing more then a
CA3080 based OTA filter,4 cascaded 6db filters
in series where the 2 pole stage is taken out
,nothing special, just standard stuff.

It does not emulate a Moog filter
since its OTA based.

On the otherhand its filter stage could be said
to emaulate a SH7 for instance since they are wery
similare in design. Newertheless the station sounds nice!

Reg
BJ

>cyborg_0 at iquest.net wrote:
>
> >Anyone know what kind of filter is
> >crammed in there? From what I
> >remember, it was some sort of state
> >variable filter, but I am not all that sure.
>  >Perhaps someone has some schematics?
>
>  I have the keyboard version. The VCF has two modes, both lowpass. The 2
>pole mode is meant to suggest a TB-303 filter, somewhat unconvincingly,
>IMO. The 4 pole mode, however, does a wonderful job of emulating a Moog
>VCF. I think it sounds quite a bit like my ancient Source, and along
>with the bonus of factory MIDI, I don't have to worry about damaging a
>rare membrane switch panel.
>
>  I'd love to see schematics as well, if only to see how the different
>cutoff slopes are achieved.
>
>Richard Hess
>
>metamatic at webtv.net
>

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