| 摘要 |
1. A portable compact-disc player comprising a body portion having a turntable, characterized in that comprises an opposite pair of loudspeakers attached to the player, and in that each loudspeaker comprises a distributed mode acoustic radiator and a transducer mounted thereon exciting banding waves in the radiator, causing it to resonate to provide an acoustic output, the loudspeakers are adopted to move from a stored position in the body to a working position out of the body. 2. A portable compact-disc player according to claim 1, characterized by a body portion having a turntable and by a lid adapted to close over the turntable, and in that the loudspeakers are mounted to the lid. 3. A portable compact-disc player according to claim 2, characterised in that the loudspeakers are hinged to the lid. 4. A portable compact-disc player according to claim 2, characterized in that the loudspeakers are each housed in a slot in the lid for sliding movement between a stored position, in which the loudspeakers are substantially wholly housed in the slot, and a use position in which the loudspeakers are positioned on opposite sides of the lid. 5. A portable compact-disc player according to any preceding claim, characterized in that each radiator comprises a stiff lightweight panel having a cellular core sandwiched by opposed skin layers. 6. A portable compact-disc player according to claim 5, characterized in that the radiator is supported in a surrounding frame. 7. A portable compact-disc player according to claim 6, characterized by a resilient suspension (3) interposed between the frame and the radiator. |
