Specifications
Resonance: 0…127 — Sets the Resonance level of the filter. At high settings 
the filter will self-oscillate in 4-pole mode. If the filter does not oscillate, switch 
to 4-pole mode. 
Keyboard Amount: 0…127 — Sets the amount of keyboard (MIDI note) to the 
filter cutoff. A setting of 64 will step the filter one semitone for each note, 32 
would be half-semitones, and so on. 
Audio Mod: 0...127 — Controls the amount of audio from Oscillator 1 used to 
modulate the filter cutoff frequency. For filter-only audio, set O
SCILLATOR MIX 
to 127, O
SCILLATOR 2 SHAPE to Off, and OSCILLATOR 1 SHAPE to the desired 
waveshape. This is useful for bell-like FM sounds. A wide range of sounds can 
also be made using A
UDIO MOD with the oscillators routed normally through the 
filter. 
Config: 2 Pole, 4 Pole — Selects either 2- or 4-pole operation for the filter. 
Envelope Amount: -127…+127 — Sets the amount of filter envelope routed to 
the cutoff frequency. This can be positive or negative, allowing inverted 
envelope control of the filter. 
Envelope Velocity: 0…127 — Amount of key velocity controlling the level of 
the filter envelope. 
Delay: 0...127 — Sets a delay between the time the filter envelope is triggered 
and when the Attack portion actually begins.
Attack: 0…127 — 
Sets the Attack time of the filter ADSR envelope generator. 
Decay: 0…127 — Sets the Decay time. 
Sustain: 0…127 — Sets the Sustain level. 
Release: 0…127 — Sets the Release time. 
VCA Parameters 
VCA Level: 0…127 — Sets a base level for the VCA (Voltage Controlled 
Amplifier). This allows the VCA to be essentially bypassed, which is necessary 
for Programs that drone. 
Note: If VCA L
EVEL is on full, Envelope Amount has no effect. You 
normally want VCA L
EVEL set to zero. For droning sounds, or using the 
Mopho to process external audio, you will probably turn the VCA Level 
up. 
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