acoustic suspension
noun
: an enclosed mounting for loudspeakers that produces a more defined acoustic tone at the cost of a reduced output
Acoustic suspension simply means that the driver is mounted in a sealed cabinet. 
Home Theater, June 1997
Home Theater, June 1997Note: Enclosing a loudspeaker (usually a woofer) in a small space causes the emitted sound waves to behave differently, allowing the speaker to generate cleaner sound but also reducing its efficiency.
Word History
First Known Use
1957, in the meaning defined above
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