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MIDI Out ports, one switched and one un-switched, allow unprecedented control over
external MIDI devices attached to the organ.
Under normal circumstances, MIDI sound modules should be connected to the switched
MIDI port labeled MIDI OUT 2. Doing so allows the organist to disable the sending of
MIDI data from the organ to the sound module. Devices such as MIDI sequencers should
be connected to the un-switched MIDI port labeled MIDI OUT 1, eliminating the
necessity of having to draw the MIDI stop controls before recording a digital sequence.
MIDI TRANSMISSION CHANNELS
MIDI information may be broadcast on several different channels simultaneously. This
allows many channels of information to be sent through one cable and used
independently of one another similar to the way several television broadcasts can be sent
through one cable. In order to receive the intended information, a MIDI device must be
tuned to the same channel as the devise that is sending the information. Your Allen
organ transmits MIDI information on several channels.
When external MIDI devices are connected to the organ, it is important to make sure that
the devices' channels of transmission and reception match the MIDI channels of the Allen
organ divisions to which they are assigned.
For example, the C-19c and Protégé Theatre Compact transmit MIDI information on the
following channels:
Solo Manual
=
Channel 1
Accomp Manual =
Channel 2
Pedal Manual
=
Channel 3
General Pistons =
Channel 8
MIDI Program Change Messages
are transmitted from the organ’s General Pistons on
MIDI Channel 8. These program change messages can be used to change the setting of
MIDI sound modules or synthesizers that are connected to the organ. Please consult the
owner’s manual of your MIDI device(s) for more information on how MIDI Program
Change Messages are handled by that particular device.
In addition to note information
, MIDI Volume Change Information
is sent on MIDI
channels 1, 2, and 3 by the organ’s single expression pedal. In this manner, the volume
level of connected sound producing MIDI devices may be controlled. Please consult
your MIDI device's owner’s manual for information on how MIDI volume information is
handled by them.
If any external MIDI device is used to transmit information to the organ, the same
assignment of MIDI channels must be used as outlined above.
