| 摘要 |
PROBLEM TO BE SOLVED: To provide a loudspeaker in which an abnormal sound is reduced. SOLUTION: The loudspeaker is provided with: a magnetic circuit 4; a voice coil 8; a diaphragm 7; a frame 6; and a damper 9, the magnetic circuit 4 is composed of: a recessed yoke 3; a magnet 1 provided on a surface of a recessed portion of the yoke 3; and an upper plate 2 provided on a surface of the magnet 1, and a notch 10 is provided in the corner of the frame 6 or the yoke 3 facing the voice coil 8. COPYRIGHT: (C)2004,JPO
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