Selecting Pr-300 Sounds W/Program Changes - Rodgers PR-300 Owner's Manual

Selecting PR·300 Sounds with Program Changes
The Sound Function, as described earlier, is one way
to
select
PR-300 sounds. There is another way to select PR-300 sounds
without even touching the PR-300 through Program Change
messages.
A Program Change is a MIDI message which can be sent from
the Rodgers organ to the PR-300 to select a sound. Each of these
messages has a value between 1 and 128. When a program
change is sent from the Rodgers organ to the PR-300, a sound
which corresponds to the program change number sent is
selected. What's more, Program Changes can be stored in the
combination action of the Rodgers organ with organ
registrations, allowing both PR-300 sounds and organ
registrations to be selected with the press of a combination
piston.
Let's start by selecting a sound for MIDI channel 1 by sending a
program change from the Rodgers organ to the PR-300.
Right now, the PR-300 should have "Harpsichord"
selected for Part 1 (which is controlled from the
Great manual when "MIDI ON GREAT" is
activated). Let's assume that you would like to use
the PR-300's "Piano 3" voice for Part 1 instead.
The PR-300's "Piano 3" voice has been assigned
Program Change #3. So, we will send Program
Change #3 on MIDI channel 1 to select the "Piano
3" voice for Part 1.
To send a program change from your Rodgers
organ to the PR-300:
This number in the display denotes
the Program Change for each
instrument. For example,
"Harpsichord" can be selected with
Program change #7.
~
P.;jt-·t.: 1 7-
Ilt-
H.::it-·p:=. i chot-'d
(1) Hold [SET] on the Rodgers organ.
(2) Press [MIDI ON GREAT]*, then release both
pistons.
The MIDI coupler will flash, signifying that the
organ is ready to send a program change.
*This coupler is called "MIDI GREAT A" on larger
Rodgers organs.
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