Patent ID: 8184832

Claim:
An electrostatic loudspeaker assembly having: at least one stator panel in the form of a substantially rigid plate having an electrically conductive core and an insulating coating, and having its opposed major surfaces interrupted by an array of holes covering a main area of the panel, wherein said panel is formed with: (i) a first edge curvature with a first axis, said first axis having a first orientation; (ii) a second edge curvature with a second axis having a second orientation, said second axis having a second orientation, the first orientation having a direction distinct from the second orientation, and wherein the insulating coating of the panel completely covers all of its surfaces in said main area including the surfaces around the sides of said holes; a flexible diaphragm generally co-extensive with said main area of said stator panel and situated in proximity to said main area of the panel, portions of said diaphragm being movable under the influence of electrostatic forces; spacer means formed of an insulating material situated between said stator panel and said diaphragm which normally prevents contact between said diaphragm and said stator panel, said spacer means having apertures that define boundaries of said movable portions of said diaphragm, said spacer means having continuous or approximated curvature corresponding to that of said stator panel with the proviso that stator panel and flexible diaphragm exclude paper.