Trinity Episcopal Church
New York, New York
Henry Erben, 1846
OHS ID 22808
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GREAT (CC-e''', 65 notes     SWELL (c-f''', 42 notes)
Open Diapason, larger        Stopt Double Diapason
Open Diapason, smaller       Open Diapason
Stopt Diapason               Stopt Diapason
Flute                        Dulciana
Principal, larger            Principal
Principal, smaller           Cornet
Twelfth                      Hautboy
Fifteenth                    Trumpet
Sesquialtera III             Clarion
Furniture III
Trumpet                      SWELL BASS (CC-c, 25 notes)
Clarion                      Dulciana or Soft Open Diapason, wood
                             Serpent (or Great Bassoon)
PEDAL (CC-c, 25 notes)
Open Double Diapason,        CHOIR (CC-e''', 53 notes*)
  playable at 32' & 16'      Dulciana
                             Stopt Diapason
COUPLERS                     Principal
Swell Bass to Pedals         Flute
Great to Pedal sub           Fifteenth
Great to Pedal               Clarionet (or soft Trumpet) treble
Choir to Pedal               Bassoon bass
Swell to Great
Swell to Great octave        Note:  The pitch indications are not
Choir to Great               given, as was typical of the era.  Unison
Swell to Choir               pitch stops (i.e., 8') are Open Diapason,
Swell to Choir octave        Stopt Diapason, Dulciana, etc.  Manual
                             16' stops are designated "Double".  
                             Principal and Flute are 4'.  However, one
                             curious feature of this organ is the special
                             extended manual compass in the bass, which
                             in effect gave every manual 8' stop a 16'
                             bass extension, every manual 4' an 8' bass
                             extension, and so forth.  This lower 
                             octave of the Great could be activated to 
                             the pedal by a coupler to augment the Pedal.
                             Also, as Ogasapian notes, the Swell Bass, 
                             given then-current practice of using the
                             Swell for treble melodies, could in practice
                             be permanently coupled to the Pedal

*Lowest octave of Choir with no pipes, permanently coupled to Swell.
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[Received online from T. Daniel Hancock, 2012-07-30]