Korg M3 Parameter Manual page 150

Combination mode
Off (unchecked): X–Y position will not affect the volume.
However, you can use program parameter settings for X–Y
CC or AMS to control the volume.
Equal Amount
This applies only when Enable Volume Control is On.
When Equal Amount is On, the X–Y will fade between all
four X–Y axes while maintaining a total amount of 100%.
This provides a smooth fade between the different sounds,
and is the type of volume control used by classic Vector
synths.
X–Y Synthesis system, Combination mode
Combination
X–Y control
MIDI In
(Global Chan.)
X–Y motion
X–Y control
Timbre 1
X–Y control
MIDI In
(Timbre Chan.)
140
[Off, On]
Combi X–Y Volume Control
Timbres 1–16
Center Volume and
Equal Amount settings
Combi X–Y CC Control
X Mode and
Y Modes
X–Y CC MIDI Output
Global Controllers
MIDI CC Assignments
Defaults: X=118, Y=119
In X-Y control, only timbres that are set to
the global MIDI channel will be controlled
Program X–Y Volume Control
Osc 1–2 Center Volume
and Equal Amount settings
Program X–Y CC Control
X Mode and
Y Modes
Note that this will work best when the Programs assigned to
each of the four axes have equivalent volumes. For instance,
you might create a Combination with four Programs, each
sounding at the same volume and assigned to a different
axis. You could then add a fifth Program, assign it to one of
the axes, and then use the Timbre volume sliders to reduce
the levels of both Programs on that axis by 50%–so that their
combined volume is the same as any one of the other
Programs.
Also, when this is checked, the Center Volume parameters
will be grayed out, since Equal Amount sets them
automatically.
Combi switch:
"Enable Volume control"
Combi switch:
"Enable CC control"
X+/– and Y+/–
CC Assignments
Global switch:
"X–Y MIDI Out"
X–Y CC Control
X–Y TouchView
* Depending on the MIDI I/O settings of the KARMA module,
timbres other than the global MIDI channel will also be
controlled.
Program switch:
"Enable Volume control"
X+/– and Y+/–
CC Assignments
Program switch:
"Enable CC control"
X–Y Modulation of
Timbre Volume
X–Y CC Modulation of
Program and FX Parameters
(Global Channel Only)
X–Y CC MIDI Output
X–Y Modulation of
Osc 1–2 Volume
X–Y CC Modulation of
Program Parameters
Timbre 16