| 摘要 |
PURPOSE:To improve the frequency characteristic and the appearance by providing a drive cone attached to a voice coil supported by a damper attached to a frame and a center cap integrated cone type diaphragm supported by an edge attached to the frame and attached to the drive cone. CONSTITUTION:To the voice coil 24 supported by the damper 23 attached to the frame 21, the drive cone 25 is attached, the center cap integrated cone type diaphragm 27 is supported by the edge 26 attached to the frame 21 and attached to the drive cone 25. Accordingly, to the center cap integrated cone type diaphragm 27, the vibration of the voice coil 24 is transmitted faithfully by the drive cone 25. Thereby, the center cap integrated cone type diaphragm 27 is thinned, the turbulence of the frequency characteristic due to the front chamber effect is prevented and the vibration of the voice coil 24 is faithfully transmitted to a center cap part, so that the frequency characteristic is improved.
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