Opus 9 Specifications
| Manual I | Manual II | |||
| Bourdon | 16' | Gedackt | 8' | |
| Principal | 8' | Viol d'Gambe | 8' | |
| Rohrflöte | 8' | Spitzflöte | 4' | |
| Octave | 4' | Sesquialtera | II | |
| Nasard | 3' | Octave | 2' | |
| Mixture | ||||
| Trompet | 8' | |||
| Pedal | ||||
| Subbaß | 16' | |||
| Octave | 8' | |||
| Gedackt | 8' | |||
| Posaune | 16' | |||
| Trompet | 8' | |||
| 3 couplers | ||||
| Tremulant | ||||
| Vogelgesang | ||||
| Temperament Kellner | ||||
The pipework of both manuals except the Principal 8 foot on Manual I are contained in a single swellbox integral to the case.


