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An organ stop is a component of a pipe organ that admits pressurized air (known as wind) to a set of organ pipes. Its name comes from the fact that stops can be used selectively by the organist; each can be "on" (admitting the passage of air to certain pipes), or "off" ( stopping the passage of air to certain pipes).
An organ stop can be one of three things: the control on an organ console that selects a particular sound; the row of organ pipes used to create a particular sound, more appropriately known as a rank; the sound itself; Organ stops are sorted into four major types: principal, string, reed, and flute.
The pipe organ is a musical instrument that produces sound by driving pressurised air (called wind) through the organ pipes selected from a keyboard. Because each pipe produces a single pitch, the pipes are provided in sets called ranks, each of which has a common timbre, volume, and construction throughout the keyboard compass.
These controls are generally either draw knobs (or stop knobs), which engage the stops when pulled out from the console; stop tablets (or tilting tablets) which are hinged at their far end; or rocker-tablets, which rock up and down on a central axle.
There are no pistons or toe studs. The combination action consists of six stop knobs, one for each division of the organ, connected to a system of pneumatics. When one of these knobs is pulled, the registration on its respective division may be altered without the stop changes taking effect.
Bourdon, bordun, or bordone normally denotes a stopped flute type of flue pipe in an organ characterized by a dark tone, strong in fundamental, with a quint transient but relatively little overtone development. Its half-length construction makes it especially well suited to low pitches, and economical as well.
The stop action magnet, usually abbreviated to SAM, is an electromagnetic device used for the control of pipe organs and virtual pipe organs, and forms part of the organ's combination action. On a classical organ the device may be referred to as a drawstop solenoid.
The Wanamaker Organ is a concert organ of the American Symphonic school of design, which combines traditional organ tone with the sonic colors of the symphony orchestra. In its present configuration, the instrument has 28,750 pipes in 464 ranks.
History. It was founded in Buffalo, New York in 1865 [1] but relocated to Erie, Pennsylvania. In 1872, the company was known as the Derrick and Felgemaker Pipe Organ Company. During the 1870s, the company employed over 55 workers and had $75,000 worth of capital. The firm produced between 15 and 20 organs per week. [citation needed]
Kegg Pipe Organ Builders is a manufacturer of pipe organs based out of Hartville, Ohio, U.S.A. The company was founded by Charles E. Kegg in 1985. Kegg had previously worked with a number of organ building firms, including Casavant Frères.