| 摘要 |
A speaker enclosure includes a first set of walls defining a first box, a second set of walls defining a second box disposed within the first box to define an enclosed compartment between the first set of walls and the second set of walls, an aperture located at least one of the second set of walls defining an opening between the internal volume of the second box and the enclosed compartment, and an alternative density transmission medium affixed to one or more surfaces of the first set of walls and/or the second set of walls in the enclosed compartment.
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