| 摘要 |
<p>A loudspeader enclosure assembly (2) comprises a chipboard box covered by a sound absorbing material. The material comprises an inner layer of expanded polystyrene and an outer layer of fine cellular neoprene, to improve the sound reproduction. The loudspeaker enclosure assembly is apertured over the high-frequency loudspeaker (20), low-frequency loudspeaker (22) and in the top wall (10). The front wall (14) of the loudspeaker enclosure assembly has a step (24), so that there is a gap between the covering and the low-frequency loudspeaker (22). A ring (35) of plastic material is bonded to the covering and to the rim of the low-frequency loudspeaker. Sound-absorbing foam matting (48), (54) backed with a film of filled unexpanded plastics material is bonded to the back wall (4) of the loudspeaker enclosure assembly (2) and to the back of the electromagnet housing (56). The loudspeaker enclosure assembly (2) stands on three feet. The two back feet (62) are of hard rubber and the front foot (64) is of softer rubber. </p> |
