tubular pneumatic action
Quick Summary
Tubular-pneumatic action is a mechanism used in pipe organs where air pressure controls the opening and closing of a pipe's mouth. This action is regulated by the organist pressing and releasing keys.1
In a pipe organ, sound is created by pipes that are supplied with wind through a mechanism operated by the organist. Tubular-pneumatic action was a system developed where lead tubes replaced trackers, and compressed air traveling through these tubes controlled the pallet that opened the pipe. While effective when well-maintained, it could be sluggish and is rarely used in modern organs.2
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