| 摘要 |
PURPOSE: A tweeter of a coaxial speaker is provided to vary a size of an opening of a rotating member using a shutter revolving according to a rotation of a rotating member. CONSTITUTION: A coaxial speaker comprises a woofer(100) generating the bass, and a tweeter(200) generating the loud sound and a connecting member(300) connecting the woofer and the tweeter. The woofer comprises a frame(110), a magnetic circuit part(120) installed at the frame and a sound generation part(130) installed inside frame. The frame is formed into an open upper side and a cylindrical form having a penetration hole. The magnetic circuit part comprises a plate(121), a magnet of ring shape(123), and a yoke(125). The sound generation part comprises a vibration plate(131), and a voice coil(133), and a damper(135). The tweeter comprises a frame(210), and a magnetic circuit part(220) and a sound generation part(230). The connecting member is installed between the woofer and the tweeter. |
