| 摘要 |
PCT No. PCT/DK82/00007 Sec. 371 Date Sep. 28, 1982 Sec. 102(e) Date Sep. 28, 1982 PCT Filed Feb. 2, 1982 PCT Pub. No. WO82/02812 PCT Pub. Date Aug. 19, 1982.In a bass-reflex enclosure or cabinet of the kind in which a loudspeaker unit is mounted in an opening (11) of a front plate (10) and at the end of two coaxially mounted and into the interior of the cabinet extending tubular members (13, 14), so that an annular slot (28) around the speaker unit (16) is provided and in a known manner utilized as a bass-reflex port arranged coaxially with the speaker unit (16), said speaker unit is fixedly mounted on the one end of the inner tube (14) whereas the other outer tube (13) is fixedly mounted to the front plate (10) or forms an integral part therewith. The assembly comprising the inner tube (13) having the speaker unit (16) mounted thereto is suspended to the front plate (10) by means of a number of vibration absorbing rubber blocks (22) which are evenly distributed along the periphery of the speaker. Thereby an acoustically dead front plate (10) is achieved. |
