| 摘要 |
A speaker with a sound generation part of a large area is provided. In the speaker, a ring-shaped protrusion part is formed at the outer circumference of the flange par in the frame, and also the inner surface of the outer circumference of the edge is coupled to the outer circumference of the protrusion. Moreover, the inner circumference of the outer end part of the edge is coupled to a step formed at the outer surface of the flange part in the frame.
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