Patent ID: 6731773
Filing Date: 2004-05-04
Classification: H04R

Abstract:
A speaker comprising:a motor assembly comprising: a motor basket having a front and a rear, wherein the front includes a frontal opening, and wherein the motor basket defines a cone assembly receiving space; a magnetically and thermally conductive pole fixed at the rear of the motor basket, the pole having a front end and a rear end; and a magnet surrounding at least a portion of the pole; and a cone assembly removably mountable in the motor basket comprising: a cone basket having a frontal opening; a cone having a central portion and a peripheral edge, the peripheral edge being supported in the frontal opening of the cone basket for axial movement; and a coil assembly comprising: a former having a linking portion and a coil portion, wherein the linking portion of the former is linked to the central portion of the cone to drive its axial movement, wherein the coil portion of the former is sized and positioned to be receivable over the front end of the pole when the cone assembly is mounted in the motor assembly; a coil winding on the coil portion of the former; and means for connecting the coil to an electrical source; whereby when the cone assembly is mounted in the motor assembly, the coil portion of the former is operatively supported over the pole near the magnet so that energizing the coil will cause reciprocating motion of the former and the cone to which it is linked.