M-Tron Pro now comes with a choice of two state variable filters.
Type 1 - This is the custom designed filter found on previous versions of M-Tron Pro.
Type 2 - New to M-Tron Pro IV. A creamy analogue-modelled 2-pole state variable filter. We think it suits the ‘tron sound well.
This selects the specific filter modes from the following:
Lowpass
This mode allows the low frequencies to pass through while progressively filtering the higher frequencies as you rotate the cutoff knob anti-clockwise.
Highpass
Selecting this mode allows the high frequencies to pass through while progressively filtering the lower frequencies as you rotate the cutoff knob anti-clockwise.
Bandpass
This allows the selected band of frequencies to pass through while filtering out anything outside the selected range.
This determines the frequencies that the filter allows to pass through depending on which filter mode is selected. For example, selecting highpass mode allows you to filter the low frequencies while allowing the high frequencies to pass through.
This boosts the frequencies at the point which the cutoff frequency is set.
Turning the tracking knob to the right will move the filter cutoff upward as you play higher notes on the keyboard, and close the filter for lower notes.
Turning this knob to the left will lower the filter cutoff on higher notes, and open the filter on lower notes.