Patent ID: 8737675

Claim:
A speaker unit comprising: a diaphragm; a voice coil which is secured to said diaphragm; and a lead which is connected to said voice coil to energize said voice coil, said diaphragm including an annular securing portion which has said voice coil secured thereto, and a projection which is provided in a form of an elongate ridge projecting with respect to said securing portion at a side corresponding to a surface of said diaphragm having said voice coil secured thereto, and extends along said securing portion, said projection in said form of said elongate ridge having a top, said projection in said form of said elongate ridge having said top partially recessed to have a recess, said lead extending across said recess to traverse said projection in said form of said elongate ridge, wherein said projection in said form of said elongate ridge has an inner projection formed radially inwardly of said securing portion, and an outer projection formed radially outwardly of said securing portion, and wherein said recess is formed at said outer projection.