Grenzing Organ from Geneva                        

Geneva (Geneve, Genf) is the second most populous city in Switzerland (after Zürich) and is the most populous city of Romandy, the French-speaking part of Switzerland. Situated where the Rhone exits Lake Geneva, it is the capital of the Republic and Canton of Geneva. The population is almost 200,000.  

Les Eaux-Vives, became one of the biggest districts of Geneva, occupy the terminal portion of the left bank of Lake Geneva before the release of the Rhone downstream. The famous Jet d'Eau is located on the territory of Eaux-Vives  

The Protestant Temple des Eaux-Vives was built by the architect Jacques-Louis Staple in 1842. It is neo-Gothic style with stained glass of the glass painters Jacques Wasem and John Graz. Two restorations were made in this place of worship in 1950, then in 1992. 

The church's organ was built in 2001 by Gerhard Grenzing who is a famous German organ builder living in Barcelona. This is a typical North German Baroque organ. 

Alain Grandchamp recorded the organ. Although this recording was made with care and a high-quality hardware, its treatment was exceptionally difficult and it was thus necessary to slightly limit the precision and the features of the sample-set. Some organs, because of a very noisy and irregular external traffic can not be well sampled. So is this instrument. Also a malicious but enthusiastic small animal (bird or cricket?), singing a strong and strident accompaniment behind some few stops did not facilitate the things either. This sample-set was thus a challenge. The Augustine’s V.O. assumed the finishing of this so ungrateful recording and the making of the sample-set.  

Special thanks to Gérard Lefranc and Dominique Dantand. They continually supported my work and effective assistance provided to all phases of making of sample set. The artistic audiodemos created Dominique Dantand and István Nagy.  

Sample quality 
The sample sets are available in wave format 48kHz/24bit, stereo, multiple loops (1-14) and multiple releases (3 levels). Equal, a=440 Hz

The sample sets are made in two forms. 

a. The original stereo mix 'semidry'. The reverb is 1-1.5 s, reflects the original acoustics of the church. 

b. The 4-channel version made with a 4 s artificial reverb and wet/dry ratio can be controlled.

Hauptwerk v4.2 or v5 supported for the Organ Definition Files.

Keyboards, Pedal 

The compass of the manuals of the original version are 56 keys, the extended version are 58 keys.

The compass of the pedal of the original version are is 30 keys, the extended version are 32 keys.

Normal Hauptwerk installation (described in the HW manual) is all that is necessary if stop control is by mouse or touchscreen. However, an extra installation step is required to allow MIDI control of the virtual stops from an organ console with real stop-knobs or stop-tabs. It will also be necessary if using an external MIDI sequencer to control the organ. 

 A brief guide on doing this can be downloaded here. Special thanks to Adrian Wheal, who made this the manual.

RAM requirements (GB)




16 bit

24 bit

16 bit

24 bit

Grenzing Geneva





The values given are for reference only and depend on the operating system of the computer and the utilities used. 

Pedal  (original 30, virtual 32 keys)

Soubbasse 16', Octave 8', Octave 4', Choralbass 4'

Posaune 16', Trompette 8' 

Great (original 56, virtual 58 keys)

Bourdon 16', Principal 8', Bourdon 8', Gambe 8'

Oktave 4' Flute conique 4', Nasard 2 2/3'

Octave 2', Tieerce 1 3/5', Mixture 4f

Cornet 3f (from C and from C#)

Trompette 8'

Positiv (original 56, virtual 58 keys)

Quintaton 8', Flute a chem. 8', Principal 4',  Flute 4'

Flute 2', Sesquialtera 2f , Scharf 3f

Vox humana 8'


P+I, P+II, I+II bass, I+II discant


original: II

extended: + I

Slider of Near (semidry) - Far (wet) - Rear volumen control

(only in the surround version!)

Audio demos

Playing Domonique Dantand, Norberto Broginni, Andrew Lecky, Nagy István,  and 'Legrand'
Download / Order

The Luins sample set is released as a shareware virtual instrument. 
You have to request the download link.
Fill out this request form and send it to us. (Your personal information we will be kept confidential and not be passed on to someone else.)  
Within 48 hours the "Association de l’Orgue virtuels des Eaux-Vives" will send you the download link and detailed information on the condition of uses. The downloaded sample can be used for an unlimited period without restrictions, but if you like the sample set please make a donation to the AOEV in the suggested amount of € 65