Opus 1 Specifications
| Great | Swell | |||
| Principal | 16' | Salicional | 8' | |
| Octave | 8' | Rohrflöte | 8' | |
| Gedackt | 8' | Celeste tc | 8' | |
| Viola da gamba | 8' | Octave | 4' | |
| Octave | 4' | Spitzflöte | 4' | |
| Rohrflöte | 4' | Nasard | 3' | |
| Quint | 3' | Octave | 2' | |
| Octave | 2' | Waldflöte | 2' | |
| Cornet mc | V | Sesquialtera | II | |
| Mixture | Scharff | |||
| Trompet | 8' | Dulcian | 16' | |
| Chamade | 8' | Schalmey | 8' | |
| Vox humana | 8' | |||
| Pedal | ||||
| Principal | 16' | |||
| Subbaß | 16' | |||
| Octave | 8' | |||
| Gedackt | 8' | |||
| Octave | 4' | |||
| Mixture | ||||
| Posaune | 32' | |||
| Posaune | 16' | |||
| Trompet | 8' | |||
| Trompet | 4' | |||
| 3 couplers | Zymbelstern | |||
| Tremulant | Dual stop action | |||
| Temperament Kellner | ||||
The principals and flutes outside of the mixtures are made of a 98% lead alloy, the mixtures of 28% tin, and the strings and chamade are of 77% tin.