Rodgers A778 - Intramanual Couplers; MIDI Couplers

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Intramanual Couplers
Intramanual couplers are different from intermanual couplers in that they operate within a
single organ division. These couplers allow you to play stops of the organ at a different pitch
level on the same manual where the stop is located. These couplers are often referred to as Sub
Couplers and Super Couplers. For example, by activating the Swell to Swell 16’ coupler
(Sub), the stops selected in the Swell division will sound one octave lower than the key played
on the Swell manual. An exception is the first octave where the lowest 12 notes will only sound
at unison pitch. With the Swell to Swell 4’ coupler (Super) activated, the stops selected in the
Swell division will sound one octave higher than the key played on the Swell manual. An
exception is the last octave where the highest 12 notes will not play if the selected stop is 2' or
shorter.
Another example of intramanual couplers is UNISON OFF. The SWELL UNISON OFF
coupler silences notes at concert or unison pitch (hence, the name) on the swell manual. The
Choir intramanual coupler is labeled CHOIR UNISON OFF and silences notes on the Choir
manual.
For example, selecting the SWELL UNISON OFF coupler would cause activated stops in the
Swell division to be silent even when notes are played on the Swell manual. The Unison Off
couplers are useful when you want to couple a division somewhere else without having it sound
on its assigned manual (i.e., you want to couple stops in Swell division to the Great but don’t
want them to play from the Swell manual).
MIDI Couplers
MIDI and MIDI/ORCH couplers are located under their respective manuals on pistons
(commonly referred to as thumb pistons).
The couplers labeled MIDI SW A and MIDI SW B for the Swell Manual, MIDI GT A and
MIDI GT B for the Great Manual, MIDI CH A and MIDI CH B for the Choir manual and
MIDI PED A and MIDI PED B for the pedals allow sounds from an external sound module to
be played from different divisions of the organ. Depending on model, some organs feature as
many as 52 internal orchestral voices. If the instrument has internal orchestral voices the MIDI
couplers will be labeled MIDI/ORCH SW A and MIDI/ORCH SW B for the Swell Manual,
MIDI/ORCH GT A and MIDI/ORCH GT B for the Great Manual, MIDI/ORCH CH A and
MIDI/ORCH CH B for the Choir manual and MIDI/ORCH PED A and MIDI/ORCH PED B
for the pedals.