Patent ID: 7325650
Filing Date: 2008-02-05
Classification: H04R

Abstract:
1. A speaker comprising: a diaphragm having a central portion with a dome shape and an edge portion formed on an outer periphery thereof; a frame, with which an outermost fringe of said edge portion is attached; a voice coil bobbin, an upper and outer periphery surface thereof being fixed on an inner surface of said central portion; a voice coil wound around a lower and outer periphery surface of said voice coil bobbin; a center pole portion, in which a magnetic gap is formed along an outer periphery surface thereof, said center pole portion having a top portion; and a damper member provided inside said central portion, covering substantially all of the top portion of said center pole portion and supporting an inner side surface of said voice coil bobbin to position said voice coil at an appropriate position in said magnetic gap.