Patent ID: 6704426
Filing Date: 2004-03-09
Classification: H04R

Abstract:
A loudspeaker enclosure system including:a) a total of first and second chambers within the enclosure system; b) at least one electro-acoustic transducer with a vibratable diaphragm having a first acoustical coupling surface and a second acoustical coupling surface; c) at least one differential area passive radiator within the enclosure system having three separate acoustical coupling surface areas including a small unitary acoustical coupling surface area, a large primary acoustical coupling surface area, and a differential acoustical coupling surface area, d) said first acoustical coupling surface of the said vibratable diaphragm being substantially air coupled through the first chamber to a first of the three separate acoustical coupling surface areas of said at least one differential area passive radiator; and e) a second of the three separate acoustical coupling surface areas of said at least one differential area passive radiator acoustically being coupled into the second chamber and from said second chamber to the external environment through at least a first opening of predetermined dimensions; f) a third primary acoustical coupling surface area of the three separate acoustical coupling surface areas of said at least one differential area passive radiator being acoustically coupled to the external environment.