Patent ID: 8094855

Claim:
A loudspeaker system with an inverse horn enclosure comprising: at least one electro-acoustical transducer mounted in a transducer opening on the horn enclosure, the electro-acoustical transducer comprising a moveable diaphragm for converting an electrical input signal into a corresponding acoustic output at a pressure; a first compression chamber comprising the transducer opening, a first internal volume that receives the acoustic output from the diaphragm, and a first exit, wherein the first internal volume is configured to increase the pressure of the acoustic output from the diaphragm towards the first exit a second compression chamber comprising a second entrance and a second exit, the second entrance directly acoustically connected to the first exit of the first compression chamber, and the second compression chamber having a second internal volume smaller than or equal to the first internal volume; a third compression chamber comprising a third entrance and a third exit, the third entrance directly acoustically connected to the second exit of the second compression chamber, and the third compression chamber having a third internal volume smaller than or equal to the second internal volume, the third exit of the third compression chamber acoustically coupled to a last exit; a resonance-distortion filter chamber comprising a filter chamber internal volume and a filter chamber opening acoustically connecting the filter chamber to one of the compression chambers, the resonance distortion filter chamber having a resonant tuning frequency F r , that is higher than a fundamental tuning frequency F b ; and the last exit acoustically coupled to the external environment.