GENERAL−PURPOSE LOUDSPEAKER AND MOUNTING METHOD THEREOF

摘要

A loudspeaker can be used in an automobile, personal computer, home theater, for BGM and the like and can faithfully reproduce an acoustic signal. When mounted in an automobile, the loudspeaker forms a soft sound field. This loudspeaker is a general−purpose loudspeaker including at least one loudspeaker unit built in a cabinet via a baffle plate. The loudspeaker unit includes an electromechanical converter for converting an acoustic output signal into oscillator oscillation, an acoustic irradiation block for irradiating the oscillator oscillation as a sound wave, and an oscillation control metal frame of approximately cone shape fixed to the converter and surrounding the acoustic irradiation block. The oscillation control metal of the frame has an oscillation attenuation ratio not less than 0.01 and Young’s modulus not less than 5.0 x 109 N/m2. Mechanical vibration generated in the converter is absorbed by the frame of the loudspeaker unit.