Patent ID: 9173018
Filing Date: 2015-10-27
Classification: H04R

Abstract:
1. A loudspeaker element comprising: an enclosure; a cone diaphragm of a driver element located within the enclosure; a first cavity wall extending from the cone diaphragm of the driver element to a throat opening which has an area less than an area of the cone diaphragm and forming a first cavity within the enclosure; an exit element extending from the throat opening to an environment outside of the enclosure; an impedance compensation element extending from the first cavity wall, the impedance compensation element including a second cavity wall which forms a second cavity within the enclosure and an acoustic resistance element separating the second cavity from the first cavity; wherein the impedance compensation element comprises a resonating compensation element that comprises a first lumped element resonating structure; wherein the first lumped element resonating structure comprises: the second cavity; the resistance element; a third cavity wall forming a third cavity within the enclosure; and a passive radiator element separating the third cavity from the second cavity.