| 摘要 |
PROBLEM TO BE SOLVED: To reduce unwanted vibration of a cabinet, using a structure that is simple and cost reduced. SOLUTION: A speaker 1 is provided with a magnetic circuit 3, a voice coil assembly 6, including a bobbin 4 and a voice coil 5, a diaphragm body 7, an edge 9, first/second dampers 10, 11, a gasket 12, a lead wire (a tinselled wire) 14, and a dust cap 15. Since the oscillating speed in a support system can be set to zero over a wide frequency band so as to mutually make the resistance, equivalent mass, and equivalent stiffness of a first vibration system comprising the diaphragm body 7 or the equal, and those of a second vibration system comprising the magnetic circuit 3 or the like. Thus, the vibration of the first/second vibration systems is prevented from being transmitted to the support system comprising a frame 8 or the like, and from generating abnormal sounds and deterioration of voice due to unwanted vibration of the cabinet. COPYRIGHT: (C)2007,JPO&INPIT
|
