CHURCH OF THE ASCENSION AND SAINT AGNES
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Orgues Létourneau
Opus 68

Specifications


GREAT
Double Open Diapason  16
Lieblich Gedeckt  16
Open Diapason  8
Second Diapason  8
Harmonic Flute  8
Stopped Diapason  8
Principal  4
Open Flute  4
Fifteenth  2
Cornet III (TC)  2 2/3 
Mixture V  1 1/3 
Trumpet  8
Tuba  8
Tremulant 
Great 16
Unison Off    

CHOIR
Lieblich Gedeckt  16
Metal Gedeckt  8
Gamba  8
Flute Celeste II  8
Principal  4
Spindle Flute  4
Octave  2
Larigot1 1/3
Sharp Mixture III-IV1
Cremona  8
Callaway Tuba  8
Tremulant 
Choir 16' 
Unison Off 
Choir  4

SWELL
Diapason  8
Gedeckt  8
Salicional  8
Salicional Celeste (CG)  8
Principal  4 
Chimney Flute  4
Nazard  2 2/3
Spitz Flute  2
Tierce  1 3/5 
Full Mixture V 2
Double Trumpet  16
Trumpet  8
Oboe  8
Clarion  4
Tremulant 
Swell 16' 
Unison Off    
Swell 4'    
PEDAL
Contra Bourdon  32
Open Wood  16
Double Open Diapason 16
Bourdon  16
Lieblich Gedeckt  16
Major Octave  8
Metal Principal  8
Bourdon  8
Lieblich Gedeckt  8
Choral Bass  4
Mixture IV  2 2/3
Contra Trombone  32
Double Trumpet  16
Trumpet  8
Clarion  4
Tuba  8
Paul Callaway Memorial Tuba

Summary Table

Division
Stops
Ranks
Extensions
Borrows
Electronic
Pipes
Great
13
16
1
2
-
940
Swell
14
16
2
-
-
993
Choir
11
14
1
-
-
826
Pedal
17
9
4
6
1
336
Total
55
55
8
8
1
3,098

How to read the specifications

This organ has four divisions: three manual divisions played by the hands, and the pedal division played by the feet. Each part of the specification refers to the stops played on those keyboards respectively.

The name on the stop refers mainly to function or musical color. Some organ stops are nonimitative and produce foundational organ tone, e.g. Diapason, Principal, Octave. Others resemble wind or string instruments, e.g., Chimney Flute, Harmonic Flute, Gamba, Trumpet, Oboe, Trombone.

The numbers following the stop names refer to pitch as a function of the length of the longest pipe in the stop. Eight foot pitch is unison pitch. It agrees with the pitches of the corresponding keys on the piano, for instance. The science of acoustics works on the simple principle that halving or doubling the length of a vibrating body changes its pitch by an octave. Therefore, the shorter and longer designations after stops indicate the pitch at which they sound. The combination of these with unison stops produces the complex ensemble sound of the instrument.

Stops with a Roman numeral following the name, or mixtures, correspond to the upper harmonics of the overtone series and have multiple pipes per note tuned to these overtones.

The second number after the stop name, in the rightmost column, refers to the number of pipes in the entire compass of the stop, or the rank. Ordinarily, a complete manual stop would have 61 pipes, corresponding to the 61 keys of a manual keyboard. Where fewer are indicated, the stop may be an extension of another stop at another pitch (extensions often have 12 pipes to finish a bottom or top octave), or it may be incomplete for some particular reason. Occasionally, stops will play in more than one location in the instrument and these are indicated by the name of the home division in the final column.
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Church of the Ascension and Saint Agnes
1215 Massachusetts Avenue, NW
Parish Office:
1219 Massachusetts Avenue, NW,
​Washington, DC 20005
(202) 347-8161
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  • Welcome
    • Newcomers >
      • Letter to Inquirers
    • Frequently Asked Questions
    • How to Find Us
  • Who We Are
    • Our Beliefs >
      • Statements of Mission, Vision, Beliefs & Value
      • What is an Anglo-Catholic?
      • Apolitical or Supra Political?
    • Our History
    • Our Leadership >
      • Parish Staff
      • Vestry
  • Worship
    • About our Worship >
      • Attending Mass
      • Music
  • Formation
    • About Formation
    • Adult Formation >
      • Adult Theology Upcoming
      • Adult Theology Archive >
        • Knowing Christ
    • Children's Formation
    • Sermons
  • Connect
    • Contact us
    • Rector's Weekly Letter
    • Pastoral Care >
      • Pastoral Offices >
        • Reconciliation (Confession)
      • Prayer Requests
    • Stewardship >
      • Givelify Instructions
      • Planned Giving
      • Endowment Fund
  • Calendar
  • Baptism
  • Outreach