According to the present invention, disclosed is a high-performance slim speaker, wherein a plate and an external magnetic body are divided into n segments (where n is a natural number of 2 or more). A support part is supported by the outer surface of a voice coil and extends laterally outward into the space between the external magnetic body and plate divided into n segments, the support plate comprising: a body part coupled to the outer end portion of the support part; an inner edge part extending inside the body part and coupled to a guide; an outer edge part extending outside the body part and coupled to an upper frame part; a vibration plate mounted so as to be capable of vibrating up and down; and a damper part for connecting the support part and the upper frame part.
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