The OHS Pipe Organ Database

Georgetown University
3700 O St NW
Washington, District of Columbia 20057

Dahlgren Chapel

OHS Database ID 53863.

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Status and Condition

The organ is in an unaltered state from its installation as described on this page.
The organ is in good condition and in regular use.
We received the most recent update on this organ's state and condition November 13, 2014.

Technical Details

Electro-pneumatic (EP) chests.

Three manuals. 16 stops. 49 registers. 19 ranks. Manual compass is 61 notes. Pedal compass is 32 notes.

The organ is in side chambers at the front of the room, with visible façade pipes or case front.


  • This entry describes an original installation of a new pipe organ. Identified by John Igoe, using information found in The American Organist, November 2014, p.53. (Database Manager. November 13, 2014)

Online Documents

Currently we have no online documents associated with this organ entry. If you can provide us with digital files of contracts, correspondence, dedication programs, or any similar items, please follow this link to our document upload form to send them to us.

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Other Websites

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Right Organ Case. Photograph by Jack Wood 2014-09-14

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When they are available, stoplists for organs are included in the Database. To make corrections in stoplists that you see here, please send details via e-mail to rather than submitting a new stoplist through our online form.

  • Specification from The Diapason, October 2015
    Washington, District of Columbia
    Georgetown University - Dahlgren Chapel
    Schoenstein & Co.   Opus 166   2014                 3 manuals, 16 voices, 19 ranks
             GREAT ORGAN (expressive)                 SWELL ORGAN (expressive)
         16' Corno Dolce             85           16' Bourdon                 73
          8' Grand Open Diapason     61 a          8' Salicional              85
          8' Open Diapason           61            8' Stopped Diapason (ext)  --
          8' Harmonic Flute          49 b          8' Gamba                   61 c
          8' Corno Dolce (ext)       --            8' Vox Celeste             61 c
          4' Principal               61            4' Salicet (ext)           --
          4' Corno Dolce (ext)       --            4' Chimney Flute           61
      1 1/3' Mixture III-IV         186        2 2/3' Nazard (fr. Chim. Fl.)  --
          8' Tuba Minor              SW            2' Fifteenth (fr. Salic.)  --
          8' Clarinet (tc)           49        1 3/5' Tierce (tc)             42
             Tremulant                            16' Bass Tuba               73 c
             Chimes                                8' Tuba Minor (ext)        -- c
             Great Unison Off                      8' Oboe                    61
             Great 4'                                 Tremulant
                                                      Swell 16'
             SOLO ORGAN                               Swell Unison Off
             Solo Stops:                              Swell 4'
          8' Grand Open Diapason     GT
          8' Open Diapason           GT               PEDAL ORGAN (unenclosed)
          8' Harmonic Flute          GT           32' Resultant               --
          8' Clarinet                GT           16' Open Wood (ext GT)      12
         16' Bass Tuba               SW           16' Corno Dolce             GT
          8' Tuba Minor              SW           16' Bourdon                 SW
          8' Oboe                    SW            8' Principal               20 d
             Ensemble Stops:                       8' Salicional              SW
          8' Stopped Diapason        SW            8' Stopped Diapason        SW
          4' Salicet                 SW            8' Corno Dolce             GT
          4' Chimney Flute           SW            4' Fifteenth (Grand Open)  GT
      2 2/3' Nazard                  SW            4' Flute (Harm. Fl.)       GT
          2' Fifteenth               SW           16' Bass Tuba               SW
      1 3/5' Tierce                  SW            8' Tuba Minor              SW
             Percussion Stops:                     4' Clarinet                GT
          8' Harp                    dg
          4' Celesta                 dg
             Cymbelstern                           a  unenclosed
             Solo 16'                              b  1-9 from Corno Dolce
             Solo Unison Off                       c  stop under double expression
             Solo 4'                               d  21-32 from Grand Open Diapason
             COUPLERS                                 MECHANICALS
             Great to Pedal      8  4                 Solid state combination action:
             Swell to Pedal      8  4                 100 Memories
             Solo to Pedal       8  4                 35 Pistons and toe studs
             Swell to Great  16  8  4                 6 Reversibles incl. Full Organ
             Solo to Great   16  8                    Programmable piston range for
             Great to Solo       8                      each memory level
             Swell to Solo       8                    Programmable Crescendo and
             Great to Swell      8                      Full Organ
                                                      Piston Sequencer
                                                      Expression Pedal - Swell
                                                      Expression Pedal - Swell Dbl.
                                                      Expression Pedal - Great
                                                      Crescendo Pedal 
    [Received from Steven E. Lawson  2015-10-07]
  • Click Here Specification from The Diapason, October 2015 Plain text; will open in a new window or tab.