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A comprehensive dictionary of organ stops - Allen Organ Studio of ...

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66 DICTIONARY OF ORGAN STOPS.<br />

Unitarian Church, Nottingham ; but it was removed a few years ago<br />

because the authorities could tolerate the tone no longer. Other<br />

instances : St. Sulpice and St. Eustache, Paris ; Zurich Cathedral.<br />

Euphonium— See Euphone.<br />

Evacuant—(Lat.) Evacuare = to empty. A drawstop, opening a valve<br />

which allows the bellows to exhaust.<br />

The only example in this country is at Derby Road Chapel, Nottingham<br />

(Conacher), inserted to the order <strong>of</strong> Mr. John Rogers, F.R.M.S.<br />

The author has vivid recollections <strong>of</strong> attempting to solve the nature <strong>of</strong> the<br />

stop, which in this instance is grouped above the Swell <strong>stops</strong>. The device<br />

originated on the Continent. There was doubtless some use for it in the<br />

days when bellows were sometimes so liberally made that (as we read in<br />

Hamilton's "Catechism <strong>of</strong> the <strong>Organ</strong>") those at Seville Cathedral, when<br />

fully charged, supplied the fuH <strong>organ</strong> for a quarter-<strong>of</strong>-an-hour on end.<br />

P.<br />

Fach—(Ger.) = fold. Mixtur dreifach = Mixture threefold, i.e., three<br />

ranks.<br />

FAGOTTO— See Bassoon.<br />

Contra Fagotto— 16 ft. See Bassoon.<br />

FAN TREMOLO—A species <strong>of</strong> Tremulant used by the Austin <strong>Organ</strong><br />

Co., U.S.A., consisting <strong>of</strong> a two-bladed fan.<br />

The fan is suspended in a swell box over the pipes affected, and<br />

worked by four small motors, coupled in pairs by means <strong>of</strong> right-<br />

angled cranks, and actuated by the pipe wind. The effect is pleasant<br />

and musical, for the Fan Tremulant acts on the sound waves after<br />

production, not interfering with the speech <strong>of</strong> the pipes. The bass<br />

pipes are only just perceptibly affected. In a large <strong>organ</strong> <strong>of</strong> the<br />

ordinary type both varieties <strong>of</strong> Tremulant might well be employed—the<br />

Fan Tremulant for rapid vibrato effects (e.g., with Vox Humana), the<br />

ordinary type, powerful and essentially slow, for other effects. There is<br />

an example in this country at the Baptist Church, Rushden, Northants<br />

(Austin <strong>Organ</strong>). The patent air-chest employed in the Austin <strong>organ</strong>s<br />

affords a wind supply so absolutely steady as to be quite impervious to the<br />

action <strong>of</strong> an ordinary Tremulant.<br />

FAN TRUMPET—Horizontal Trumpet. Also Fan Tuba, Horizontal<br />

Tuba (See also Chamade, Trompette-A-). See the Frontispiece.<br />

Tubas, or Trumpets, with pipes bent to an obtuse angle and spread out<br />

in the form <strong>of</strong> a fan. By this means the tone is caused to blare out at<br />

the audience in a manner generally savouring more <strong>of</strong> noise than <strong>of</strong> music.

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