| 摘要 |
In the preferred embodiment, a bandpass loudspeaker enclosure (10) includes three sub chambers (21, 22, 23), a first one being a non-Helmholtz-reflex chamber of a sealed acoustic suspension construction, and the remaining two chambers utilizing two passive acoustic radiators (30, 31) to achieve two Helmholtz-reflex vent tunings and a multiple of low pass acoustic filters th at provide an acoustic bandpass with a substantially second order high pass characteristic combined with an extended, steeper, at least 4th order slope low pass stop band characteristic.
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