I just recently acquired a Pro-2 (literally yesterday) and have noticed something odd about the filter 2 cutoff. When using the knob, I can't get the filter to close all of the way. Only from 5 o'clock to about 1 o'clock do I hear any major changes in the sound. From below there, there isn't really any effect. It still only sounds about halfway cutoff. With resonance cranked up, I can actually hear the filter opening back up slightly in that range! I took a really quick video of this behavior here:
I can still close the filter all the way by using the mod matrix or a negative envelope, but it still doesn't scale properly with the cutoff knob if I use that as a workaround. I have tried rebooting and calibrating the filters several times but that does not seem to help. In fact one time the cutoff behavior changed entirely, making it almost bi-polar. In that instance, around noon to 1 o'clock was fully closed, while 7 and 5 o'clock were fully open! That was super strange. Another calibration stopped that, but it's still slightly opening back up when it should be closing all the way.
I'm not sure what else to try at this point. Does not seem this is the way it should be operating. A few guys on the Pro-2 Facebook group said they were also having this issue, but not everyone. Can anyone here replicate the issue?
Edit: I am on 1.3