Diaphonic Bassoon English|
Diaphonic Violone English
Mentioned only by Wedgwood, who provides the illustration
reproduced here, with the following explanation:
Fig B illustrates a simpler, in fact the original, form of
No examples have actually been used
in organs in this country, but this particular form of
Diaphone is very successfully used by Voit of Durlach,
Germany, as the sole pedal stop (Diaphonic Bassoon) in
his small compact organs. The raison d'être
of this somewhat singular tonal disposition is to be found
in the high efficiency of this stop on a low wind pressure.
A specimen, speaking on a pressure of 100 mm. (4 in.) occurs
at Luxembourg Church (1902, designed in 1900).
. . .
The satisfactory working, and the tone quality, depend greatly
on the adjustment of the spring s.
The name Diaphonic Violone appears only in the caption
of the illustration.