Headphone driver, a speaker, a headphone driver or speaker production method of

摘要

The present invention headphone driver and the speaker using the bonded magnets, as well as a headphone driver or speaker production method of to propose. headphone driver according to A disclosure has a bottom and standing erected in the vertical direction with respect to the bottom surface, and a yoke which is formed by using a magnetic material, wherein provided on the upper bottom surface of the yoke, and has a bonded magnet unit composed of the bonded magnets, the flux of the bond magnet unit is concentrated on the side surface of the bonded magnet units facing the upright of the yoke there.BACKGROUND 4A