The Schnitger organ of the “Grote of St. Michaelskerk” in Zwolle (1721)

By clicking on the name of the stop, you can hear a short sound presentation of that stop (sometimes in combination with other stops where necessary).

Rugwerk

    1. Praestant          8'
    2. Quintadena       8' 
    3. Roerfluit           8' 
    4. Octaav             4' 
    5. Fluit                 4' 
    6. Quintfluit          3'   *
    7. Superoctaav     2' 
    8. Sexquialtera      II   *
    9. Scherp             IV  *
   10. Cimbel            III  *
   11. Fagot              16' */S
   12. Schalmey         8'   *
 

 Hoofdwerk

    1. Praestant         16' 
    2. Quintadena      16'  */S
    3. Octaav             8' 
    4. Roerfluit           8' 
    5. Octaav             4' 
    6. Speelfluit          4' 
    7. Nasaat             3' 
    8. Superoctaav     2' 
    9. Ruyschpijp       II  
   10. Mixtuur           VI   *
   11. Cimbel            III   *
   12. Trompet          16'  */**
   13. Trompet          8'    */**
   14. Vox humana    8'    *

 Bovenpositief

    1. Praestant                8' 
    2. Holpyp                   8' 
    3. Viola                      8'  **
    4. Quinta                    6'  *
    5. Octaav                   4' 
    6. Holpyp                   4' 
    7. Quinta                    3' 
    8. Superoctaav           2'  *
    9. Woudfluit               2' 
   10. Sifflet              1 1/2' 
   11. Tertiaan                II   *
   12. Scherp                 V   *
   13. Viola di Gamba    8'   */S
   14. Trompet               4'   */S

 Borstwerk

    1. Fluitgedekt      8'
    2. Praestant         4'
    3. Roerfluit          4'
    4. Spitsfluit          3'
    5. Superoctaav    2'
    6. Gemshoorn      2'
    7. Quintanus   1 1/2'
    8. Nachthoorn      1'
    9. Sexquialtera     II
   10. Mixtuur    III-IV 
   11. Dulciaan          8'  **
   12. Regaal             8'  */S

 Pedaal

    1. Praestant         16' 
    2. Subbas            16'  */**
    3. Octaav             8' 
    4. Holpyp             8' 
    5. Superoctaav     4'
    6. Vlakfluit            2'  *
    7. Mixtuur         VIII  *
    8. Fagot             32'   */S
    9. Basuin            16'   */S
   10. Trompet          8'   */S
   11. Trompet          4'   */S
   12. Cornet             2'  */**

Couplers:

      I - II
      IV - II
      III - II
      II - Ped

• IV - III - originally "schuifkoppel" by pulling the manuals, in the virtual version, this coupler sits on the drawstop called "Koppelingen" which has no function on the real instrument.
• reversie coupler of the Pedal to the Hoofdwerk. Added only virtually, the coupler is not present on the real instrument. Attention! Do not use this reverse coupler in conjunction with the normal HW->Ped coupler!

Additional stops:

      Calcantenklok
      Windlosser
       Ventils for each division (Afsluiter)
       Tremulant Rugwerk
       Tremulant HW+BP+BW

Technical conditions based on our own measurement

Temperament: Equal [in Hauptwerk 3, it is possible to use also other tuning schemes]
Tuning (a'):      a = 491.6 Hz at 17°C
Pressure:         78 mm in all windchests  (set to 70 mm in Hauptwerk)

Abbreviations

• The stops without a mark are from Schnitgers
• The stops marked by * come from the Flentrop restoration (1955)
• Those with ** are from van Oeckelen (1883)
• If the stops uses remaining parts from Schnitgers + additions from Flentrop, it is marked */S, usually it is in reed stops, where the resonators are new, while the shallots, nuts and sockets are from Schnitgers.
• Stop made by Flentrop using older van Oeckelen parts is marked by */**.