Patent ID: 6819773
Filing Date: 2004-11-16
Classification: H04R

Abstract:
An electro-dynamic loudspeaker comprising a chassis;a translatable body with a three-dimensional diaphragm extending within the chassis, said three-dimensional diaphragm comprising a front part and a back part; an electromagnetic actuator for displacing said translatable body with respect to the chassis along a translation axis extending from said front part to said back part of the diaphragm, said electromagnetic actuator comprising a stationary actuator element fixed to the chassis and a translatable actuator element connected to the translatable body proximate to the back part of the diaphragm, said stationary and translatable actuator elements magnetically co-operating with each other over an air gap; a first flexible connecting means proximate to the front part of the diaphragm for connecting the translatable body to the chassis, said first flexible connecting means movably journaling the translatable body with respect to the chassis; and a second flexible connecting means proximate to the back part of the diaphragm for connecting the translatable body to the chassis, said second flexible connecting means movably journaling the translatable body with respect to the chassis, wherein the air gap, extending between the stationary actuator element and the translatable actuator element, is located outside a space enclosed and defined by contours of the diaphragm, and within an area between the first flexible connecting means and the second flexible connecting means.