Unison Off
2. Rearranging the manual and pedal divisions.
Suppose you want to use the Great Prestant 4' as a solo in the Pedal,
but you still need two levels of manual accompaniment on your two-manual
organ. Couple the Great Prestant 4' to the pedal. Then omit the
sound of the Prestant from the Great by using the Great Unison Off.
To get sound on the Great, we cannot use any more Great speaking
stops, since they would couple to the Pedal along with the Prestant
4'. So we couple and supercouple the celeste from the Swell to the
Great. Since the couplers are not affected by the Great Unison Off,
the celeste will be heard on the Great at normal pitch and an octave
higher, and on the Swell at normal pitch.
TRY IT: Try the stop combination to the right. If there is no Unison Off on your organ, study this screen carefully and then proceed with the lesson.
3. Playing a MIDI sound on one manual, the coupled organ
divisions on another.
Couple a large MIDI solo sound to the Swell. For contrast on the
Great, you want a large Great combination and the reeds coupled
from the Swell. But you want only the MIDI solo sound playable from
the Swell. Pull a full Swell combination, couple it to the Great
with Swell to Great, and then pull Swell Unison Off. Playing from the
Swell sounds only the MIDI source (because the Swell Unison Off
cancels the organ stops), and the Swell organ stops sound only from
the Great, to which they are coupled.
