Why don't pipe organs have stops operating by disk-shaped diaphragms like this?
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3Why would they? Explaining the motivations of this question would enhance it a lot!– TomAug 26, 2021 at 18:03
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@JonathanDahlin Could you mention what this diagram is from? (And, for all I know, some organs do have them; do you know that they don't?)– Andy BonnerAug 26, 2021 at 18:04
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2Not making people click through to an external link would help too… all that URL for a simple drawing.– TetsujinAug 26, 2021 at 18:04
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1@AndyBonner that looks like an air horn of the sort one might find on a boat or a train. I'm sure there's a theater organ somewhere that has some.– phoogAug 26, 2021 at 20:50
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For one thing, unlike an air horn, the air in a pipe organ is compressed, but not at high PSI, so the volume of the air is important. From the looks of it a diaphragm doesn't have much of a cross-section to allow the air through.– DustonAug 27, 2021 at 13:45
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