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The choirorgel

Historical information:

The organ was built in 1982 by the organ builder Mense Ruiter of Zuidwolde, Netherlands.

This sample set is made from a recording made in the Petruskerk in Leens, Groningen, on October 10, 2007.
The recordings were made by Fred de Jong and Rietje Raatgeep.
Initially we refrained from the publication of this organ because of the very disturbing and difficult to remove motor noise.
Upon reflection and with much effort we were able to obtain an acceptable result which we do not wish to withold from you.
Most of the work involving the samples was done by Johan van der Waal van Dijk
The Organ Definition File and thus also the layout was created by Fred de Jong in the summer of 2013.

Technical Information:

Tuning: a' = around 436 Hz.
Temperament: Equal temperament.
For Hauptwerk, the sample set was retuned to equal temperment at a' = 440 Hz.
Windpressure 65 mm (2.56 inch) column.
There is no tremulant.


Manual: MIDI 36 up to and including MIDI 88 (C - e''')
The keyboard can be shifted a semitone to the right and because an extra pipe is installed on the chest, one can play a semitone higher without running out of pipes.
The organ builder did this to make it possible to play along with the Hinz main organ. (Also available via www.hauptwerk.nl)

1: Holpijp 8 foot Bass. MIDI 36 - 59
2: Holpijp 8 foot Descant. MIDI 60 - 89
3: Prestant 8 foot Descant. MIDI 60 - 89
4: Octaaf 4 foot Bass. MIDI 42 - 59 (For Hauptwerk, supplemented with MIDI 36 - 41)
5: Octaaf 4 foot Descant. MIDI 60 - 89
6: Roerfluit 4 foot Bass. MIDI 36 - 59
7: Roerfluit 4 foot Descant. MIDI 60 - 89
8: Octaaf 2 foot Bass. MIDI 36 - 59
9: Octaaf 2 foot Descant. MIDI 60 - 89
10: Flageolet 1 foot Bass. MIDI 36 - 59
11: Flageolet 1 foot Descant. MIDI 60 - 89

Pedal: MIDI 36 up to and including MIDI 60
12: Bourdon 16 foot. MIDI 36 - 60 (Added for Hauptwerk)

The actual organ has a pull-down pedal. To make the organ more useful, we have provided it with a copy of the Bourdon 16 foot from the main organ in this church. This made it necessary to equip the instrument with a pedal to manual coupler.
Of course the pedal also shifts when the keyboard is shifted.

Recording Technique

The organ was recorded in stereo (24 bit, 96 kHz) at a distance of about 2 meters from the front.

Alternative Tunings:
If you should use an unequal tuning, then you will notice that when the keyboard is shifted (one semitone higher) the tuning is no longer correct. For this reason we have created extra temperaments which are included with this organ.
200 Well-Temperament: Kirnberger III+semitone.
201 Well-Temperament: 1/7 Comma+semitone.
202 Well-Temperament: 1/6 Comma Vallotti-Young+semitone.
203 Well-Temperament: Werckmeister III+semitone.
244 Mean-Tone: 1/6 Pythagorean Comma+semitone.
245 1/8 Comma+semitone.
246 Just Intonation: Natural+semitone.
247 Just Intonation: Pythagorean+semitone.
248 Mean-Tone: 1/5 Pythagorean Comma+semitone.
249 Silbermann Organ, Erfurt Dom+semitone.

Should your preferred tuning not be included, please mail to hauptwerk.nl and we will make one for you.

  Hauptwerk.nl is an initiative from Sygsoft Holland. KvK 93602855. Last updated 2024-04-20