Patent ID: 7184568

Claim:
A speaker comprising: a basket, said basket comprising an accommodating open chamber, an annular bottom rib protruded from a bottom side of said accommodating open chamber around the center of said basket, and a plurality of radial reinforcing ribs formed integral with said annular bottom rib and radially extending over said annular bottom rib to the topmost edge of said basket and equiangularly spaced around said accommodating open chamber; a damper mounted in said accommodating open chamber inside said basket; and a locating ring mounted in said accommodating open chamber inside said basket to hold down said damper; wherein said radial reinforcing ribs each have a groove extending along the length thereof inside said accommodating open chamber and a plurality of slots formed in said groove and cut through said annular bottom rib for guiding heat and noises out of said accommodating open chamber during operation of said speaker.