Audsley describes this stop as follows:
A Principal or Diapason, 8 ft., of large scale and short compass, which extends throughout the treble octaves of the manual compass, or from middle c1 to the top note. The stop has very rarely been carried to tenor C. This short stop was considered of considerable value by the old German organ-builders, on account of its power of reinforcing the weaker octaves of the unison foundation-work. This weakness was so forcibly realized by Christian Muller, that he inserted two pipes to each note in the treble of several of the more important stops in his noble Organ in the Cathedral of Haarlem. This matter might, with advantage, recieve serious consideration at the present time; for the natural weakness of the treble in the Organ still remains one of its tonal shortcomings.
In The Art of Organ Building, Audsley describes five ways of overcoming weakness in the treble:
Sumner observes: �The stop is not now made, since proper scalings are used which prevent the characteristic falling off in power of the upper octaves of the old 8-ft. diapason stops.�See also Progressio Harmonica.
Principal Diskant 16', Manual; Kangasala, Finland; Thule 1845.
Principal Discant 8' (c'), Oberwerk; Jacobikirche, Dornburg, Thuringia, Germany; Gerhardt 1820.
Original site compiled by Edward L. Stauff. For educational use only.|
DiskantPrinzipal.html - Last updated 12 October 2000.