Chapter Seven: MIDI
7.1 MIDI
MIDI is an acronym for Musical Instruments Digital Interface and is an internationally
accepted communications system between musical instruments (and processors and
computers) of all kinds. We will only need to learn a small portion of this “language” to use
the D-Moll and its peripheral MIDI partners. We are going to learn only about “program
change”.
7.2 MIDI In
MIDI In is a 7-pole DIN jack. It must be connected to the MIDI Out jack of your foot
controller (or MIDI pedal), or the MIDI Out of any effects unit connected to the pedal
directly.
7.3 MIDI Thru
Connect this port to the midi in of other units to continue the MIDI chain
7.4 MIDI Communication
7.4.1 Omni Mode
The Omni mode will allow reading of MIDI information on all 7 channels. It is an easy way
to get into the MIDI system but it is not advisable if more MIDI partners on different
channels are in the same system. Then a certain MIDI channel should be assigned to the D-
Moll and its program changes should be restricted to this channel (See 7.4.2). To put the
amp into the Omni mode, hold the “Mute” switch down and activate the “Master 2” switch
quickly and then release the mute switch. The Mid Cut, Master 2, Loop and Store LED’s will
now blink to verify that the Omni mode is being accepted. This function needs to be
disabled under some circumstances in order to use single mode automatic or single mode
manual.
