| 摘要 |
A loudspeaker (10) comprising a loudspeaker drive unit (20) being operable to radiate sound in a forward direction and a rearward direction and an enclosure (30) configured to receive sound radiated in the rearward direction. The enclosure (30) comprises passageway means comprising a plurality of parts of different lengths (32). Each of the different length parts (32) has an opening (34), whereby rearward radiated sound induces standing wave resonances of air in the different length parts (32) at different fundamental frequencies. |
