Patent ID: 6275597
Filing Date: 2001-08-14
Classification: H04R

Abstract:
A loudspeaker system comprising an enclosure which accomodates a loudspeaker device and a bass-reflex port,said port being a tubular body formed of a single solid material defining a passage extending along a longitudinal axis betwen two open ends, said tubular body having a central area and two other portions, said central area being situated centrally with respect to the open ends, and each of said other portions having a longitudinal length greater than the length of the central area,characterized in that said central area is provided with a plurality of perforations spaced longitudinally and circumferentially about the passage,each of the other portions is provided with perforations spaced from the central area, andthe port includes a foam material in and/or on the perforations, said passage being free from said foam material.