1) External MIDI Keyboard connected to DIN port + VST audio on XR18 via USB returns
MIDI devices connected to DIN ports sent all MIDI data straight to computer via USB
XR18 mixer is not affected at all (MIDI messages bypass actual mixer)
For VST-Instrument playback declare respective XR18 channels as USB returns
Connect more MIDI devices to DIN Input via separate MIDI merger box
DIN OUT
DIN OUT
MIDI Keyboard
2) DIN OUT provides MIDI commands from computer to affect external MIDI device
All MIDI data from computer is sent to front DIN OUT (MIDI bypasses actual mixer)
Send Program Changes to e.g. change presets of your Effects unuts
Send MIDI CC data to e.g. change fader-setting of a lighting controller
Connect more MIDI devices to DIN Output via external MIDI thru box
DIN IN
Lighting Controller
DIN IN
CAT-5
DIN OUT
USB
X Air App – Software setting
USB
X Air App – Software setting