| 摘要 |
An electronic sound-transforming unit with a structure of generating in-phase bass reflex for preventing distortion is provided to improve a bass by reflexing the bass of a second vibration unit as in-phase with a sound of a first vibration unit without offsetting the bass of the second vibration unit. A protector includes a first outlet with an open center. A first vibration unit(120) includes a first vibration plate block-integrated with an edge and a voice coil(123) formed in a lower side of the first vibration plate. The first vibration unit is positioned in a lower side of the protector. A magnetic circuit includes a magnet(143) inside the voice coil and a yoke(144) covering the voice coil to function as a vibration plate. A second vibration unit(140) includes the magnetic circuit and a second edge. An electrode pattern is printed on both sides of a terminal plate(150). The terminal plate is separated from the lower side of the second vibration unit with a predetermined interval and is coupled to a lower side of a frame(130). A damper(190) is positioned at the lower side of the first vibration unit and the upper side of the second vibration unit to have a ring shape and includes a braking guide to cover a part of the first and second edges. |
