This control determines the initial cut-off frequency of the filter. The filter is a two-pole, or four-pole, low-pass type.
This control determines the amount of resonance (”Q” or “emphasis”) of the filter. Note that the filter will self-oscillate at around 60%. At values around 90%-100% the self oscillation can become quite loud, so be careful! Use the master volume knob to adjust accordingly.
The Fine Tune knob allows precise adjustment of the filter's cutoff frequency. This enables you to make subtle changes to the filter's response, fine-tuning the sound's harmonic content and tonal characteristics.
This knob determines the amount of Filter Tracking going into each voice. It can be adjusted to the desired discrete filter tracking value from 0% to 100%. When set to “100%”, it causes the filter in each voice to “track” the keyboard.
This control determines the amount of LFO that modulates the filter. This control is bipolar, with 0% at the centre position, +100% when turned fully clockwise, and -100% when turned fully counterclockwise.
This control determines the amount of VCF envelope that modulates the filter. This control is bipolar, with 0% at the centre position, +100% when turned fully clockwise, and -100% when turned fully counterclockwise.
The Mode switch allows you to select either a 12dB (two-pole) or 24dB (four-pole) filter mode.