Opus 12 - Cathedral of St. John Berchmans
Shreveport, LA


Cathedral of St. John Berchmans pipe organ, shreveport, la

The Cathedral of St. John Berchmans, Shreveport Louisiana is home to our Opus 12 instrument of three manuals and 55 ranks. The organ is installed in two free-standing cases in the rear choir gallery of the nave. The organ replaces a compromised instrument from the early 1990s that was never completed. The new organ stands over 30 feet tall and weighs in at nearly 20 tons. The console is a movable custom 3-manual and pedal drawknob console.

The organ was designed in collaboration with organ consultant Dr. James Dorroh of Birmingham Alabama and Justin Ward, the Director of Sacred Music for the Cathedral. The project was ushered through the Cathedral under the direction of Father Peter Mangum, Rector.

The end specification is a versatile instrument of five divisions, two of which are enclosed. The organ is comfortable with the improvisation work necessary for the Catholic service as well as congregational singing. All schools of organ literature are quite successful on Opus 12 when called upon for concerts, preludes/postludes and special services.

The Great Division is based on a robust American Principal chorus providing a rich, clear sound with tremendous presence in the space. The Swell Division is based on a French influence with fiery reeds and excellent support foundations. The Choir provides a nice Germanic secondary Principal chorus to mixture with full flutes and mutations available.
The blend of principals, flutes and strings provides for a seamless build from PPP to FFF. The final crown is the Pontifical Trumpet mounted inside the case in a horizontal position for maximum power. The solo reeds provide for a commanding single solo line, yet may be used for a final chord without being abrasive.

The organ uses electro-pneumatic slider chests for a clean articulate action. Unit or duplex stops are provided on electro-pneumatic unit action. Winding systems are done with ample size box reservoirs allowing just enough flex without intruding on melodic passages and musical integrity.

Michael Morris of our staff provided the visual case designs to couple with the gothic architecture of the 1920s Cathedral architecture. The results are a stunning combination of visual choreography and aural excellence.

The organ was dedicated on October 30, 2011 by Bishop Michael Duca of the Shreveport. Dr. Dorroh played the dedication concert that afternoon. The organ was again featured on November 1 for a High Solemn Mass that included the Messe Solennelle of Louis Vierne.

Visits may be arranged through our office or the office of the Cathedral.

Great (Unenclosed)

16 Violone 61 pipes
8 Principal 61 pipes
8 Bourdon 61 pipes
8 Violone 12 pipes


61 pipes


61 pipes
2 Super Octave 61 pipes
IV-V Mixture 1 1/3’ 281 pipes
8 Trompete 61 pipes

Pontifical Trumpet
(Mounted Horizontal in case)

61 pipes


37 Notes/Digital
Cymbelstern existing
Stops - 10
Ranks - 13

Swell (Enclosed)

16 Bourdon 12 pipes

Flute a Cheminee

61 pipes
8 Viola Pomposa 61 pipes
8 Voix Celeste GG 54 pipes
4 Principal 61 pipes
4 Cor de Nuit 61 pipes
2 Octavin 61 pipes
IV-V Plein Jeu 2' 281 pipes
16 Basson 12 pipes
8 Trompette 61 pipes
8 Hautbois 61 pipes
4 Clairon 61 pipes

Voix Humaine

61 pipes
Voix Humaine Tremulant
Swell 16
Swell Unison Off
Swell 4
Stops - 13
Ranks - 15

Choir (Enclosed)

8 Pinzipal 61 pipes
8 Gedeckt 61 pipes
8 Spitzflöte 61 pipes
8 Spitzflöte Celeste 49 pipes
4 Octav 61 pipes
4 Koppelflöte 61 pipes
2 2/3 Nazat 61 pipes
2 Superoctav 61 pipes
2 Blockflöte 61 pipes
1 3/5 Terz 61 pipes
1 1/3 Quinte 61 pipes
IV Zymbel 2/3' 244 pipes
8 Cromorne 61 pipes
8 Pontifical Trompet Great
Harp Digital
Celesta Digital
Choir 16
Choir Unison Off
Choir 4
Stops - 14
Ranks - 16

Chancel (unenclosed)

8 Gedeckt 61 pipes
4 Rohrflöte 61 pipes
Stops - 2
Ranks - 2


32 Subbass 12 Notes/Digital
16 Principal 32 pipes
16 Subbass 32 pipes
16 Violone Great
16 Bourdon Swell
8 Octave 12 pipes
8 Flötenbass 12 pipes
8 Violone Great
8 Flute a Cheminee Swell
4 Choral Bass 32 pipes
4 Flute 32 pipes
IV Rauschquinte 2 2/3' 128 pipes
32 Contra Posaune 12 Notes/Digital
16 Posaune 32 pipes
16 Basson Swell
8 Trompete 12 pipes
8 Hautbois Swell

Pontifical Trumpet

Chimes Great
Stops - 18
Ranks - 9


Swell to Great 16
Swell to Great 8
Swell to Great 4

Choir to Great 16

Choir to Great 8
Choir to Great 4
Chancel on Great

Swell to Choir 16

Swell to Choir 8
Swell to Choir 4

Great to Choir 8

Chancel on Choir
Great to Pedal 8
Great to Pedal 4
Swell to Pedal 8
Swell to Pedal 4
Choir to Pedal 8
Choir to Pedal 4
Chancel on Pedal

Great/Choir Transfer
(Moves Divisional Pistons as well)


Total Stops - 57

Total Ranks - 55

- New Organs/Opus List
- Major Renovations &

- Major Renovations &
- Console & Wiring


A client reference list is always available upon request.