Patent ID: 6626263
Filing Date: 2003-09-30
Classification: H04R

Abstract:
A speaker system for use with a shallow depth large volume displacement passive radiator comprising:a high pressure speaker box having a first opening sealed by a speaker mounted therein, a passive radiator disposed to seal a second opening of said speaker box, wherein said passive radiator comprises, a single, flat, stiff, non-porous centerpiece having a first thickness; a frame having an outer edge sized to mate with said second opening and inner edge to surround said centerpiece with said inner edge having a second thickness; an inner surround having an annular diameter with a first edge connected to a perimeter of a first side of said centerpiece and a second edge on an opposite side of said annular diameter from said first edge with said second edge connected to a first side of said inner edge of said frame; an outer surround having approximately said annular diameter with a first edge connected to a perimeter of a second side of said centerpiece and a second edge on an opposite side of said annular diameter from said first edge with said second edge connected to a second a second side of said inner edge of said frame; wherein said first thickness of said centerpiece is approximately the same as said second thickness of said inner edge of said frame; wherein said first and second thicknesses are each at least 0.25 inches.