Air chamber

From International Dictionary of Marine Aids to Navigation
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3-2-205

Alternative term: Compression chamber

In an electromagnetic horn and certain types of electrodynamic emitters, a flat cavity having the diaphragm as one wall, and which opens into the throat of the horn.




Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM