It's because the knobs is not automaticly routed to cutoff, but it's
routed thru the modulation matrix which can do lots of weird stuff...
So it's not a problem with the filter. It's just how every preset is
configured to respond to the cutoff knob. Make sure that the LFO
isn't routed to cutoff, or other modulation sources, except the
cutoff knob. Then you can be sure that the LP filter will behave the
way you expect.
//Nifflas
--- In xl7@y..., "rob99brown" <rob99brown@y...> wrote:
> I've been having some fun exploring the filters. Interesting
indeed!
>
> What I dont get though is when I'm using a classic LPF and I turn
the
> cutoff all the way to the left, I'd expect to hear little or no
> sound. Most presets I still hear the majority of the waveform
there?
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>
> Whats up with that?
>
>
> Rob