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

Selecting PR·300S Sounds with Program Changes
The Sound Function, as described earlier, is one way to select
PR-300S sounds. There is another way to select PR-300S
sounds without even touching the PR-300S through Program
Change messages.
A Program Change is a MIDI message which can be sent from
the Rodgers organ to the PR-300S to select a sound. Each of
these messages has a value between I and 128. When a program
change is sent from the Rodgers organ to the PR-300S, 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-300S sounds and organ
registrations to be selected with the press of a combination
piston.
Let's start by selecting a sound for MIDI channel I by sending a
program change from the Rodgers organ to the PR-300S.
Right now, the PR-300S 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-300S's "Piano 3" voice for
Part I instead.
The PR-300S's "Piano 3" voice has been assigned
Program Change #3. So, we will send Program
Change #3 on MIDI channel I to select the "Piano
3" voice for Part I.
To send a program change from your Rodgers
organ to the PR-300S:
(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.
23
This number in the display denotes
the Program Change for each
instrument. For example,
"Harpsichord" can be selected with
Program change #7.