| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive loud speaker system of high sound quality by reducing a sound pressure level of a standing wave. SOLUTION: This device is a loud speaker system which is equipped with a passive radiator 2 having two vibration parts back and force, a driver unit 5 and a cabinet 1 which installs the passive radiator 2 where a front vibration part 3 of the passive radiator 2 and a rear vibration part 4 are joined and the rear vibration part 4 and vibration part 6 of a driver unit 5 are connoted by a sealed cavity 8. With this constitution it is possible to realize band pass characteristics without providing an inner divider and to realize reduction of costs by simple structure of the cabinet 1. Furthermore, since it is possible to make a diameter of the driver unit 5 smaller regardless of a diameter of the passive radiator 2, a strength level of a standing wave is reduced and high sound quality is realized.
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