I tried to use the Multimode filter in some patches, and found some strange behaviour where I am wondering whether it is intended to be like this, or a bug.
Firstly, the gain control does not seem to do anything. What exactly is it supposed to do?
The other issue is, that the cutoff frequency does not change fast enough to make the filter playable through the keyboard. It always sounds like there is a portamento, i.e. it seems the cutoff voltage is run through another (slow) LP filter before controlling the frequency. As I have no access to a real Mg, I wonder whether the original module behaves the same?
In any case, it would be great to make this lag adjustable (or remove it altogether)
Cheers,
Martin