Couplers
Subcouplers
When a key is played on the Swell, Swell to Swell 16' makes each stop drawn on the Swell play also the pipe AN OCTAVE LOWER than its standard pitch. Because it duplicates pitches down an octave, Swell to Swell 16' is also called a “Subcoupler” (as opposed to “Supercoupler”). If Swell to Swell 16' were pulled in combination with a Bourdon 8', for example, playing the key Tenor C would sound both the Tenor C pipe and the next lower C pipe from the Bourdon 8' rank.
A 16' indication on a coupler means “AN OCTAVE LOWER,” not 16-foot pitch.
TRY IT: Try each of the combinations to the right. If there are no subcouplers on your organ, study this screen carefully and then proceed with the lesson.
