St. John's University
Music Hall and Stephen B. Humphrey Theater
Gertken Organ Studio
Collegeville, Minnesota

K. C. Marrin Organ Co. Opus 6, 1988

Taken from St. John's Music Website: 

"Added to the building in 1985, the Gerken Organ Studio is one of the unique gems of the Music Hall. Organ students take lessons, practice, have studio class and perform on the beautiful 21-stop tracker instrument in the studio.
...
In 1988 K.C. Marrin constructed a new tracker organ to honor the early Saint John’s music professor, Norbert Gertken, OSB. Hence the name of the Gertken Organ Studio."

2 manuals, 21 stops, 15 ranks.

Manual I:	

8' Prestant
4' Octave
3' Quint: Half pull draws 2 2/3'; full pull draws 1 3/5' 
2' Octave
IV Mixture	

16' Quintadena: Half pull plays on manual; full pull plays in the pedal
8' Rohrflöte: Half pull plays on manual; full pull plays in the pedal
8' Trumpet: Half pull plays on manual; full pull plays in the pedal

Manual II:
	
8' Gedackt
4' Rohrflöte
4' Prestant 
2' Waldflöte
1 1/3' Larigot 
III Mixture
8' Dulcian

Pedal:	

16' Sub Bass
8' Open Bass
4' Choral Bass
16' Fagott

Light Tremulant 
Nightengale

Hitchdown Pedals: 

II-I
II-P
I-P
Tremulant

 [Received from Joel S. Kumro 2014-08-26.]