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 Herbert 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 Herbert
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.
