Patent ID: 8767984

Claim:
An apparatus for reproduction of stereo sound from a two channel signal, comprising: a housing having a front face defining an output plane; one or more first transducers mounted within the housing and behind and directed to the front face for reproducing an audio signal comprising one of, or a sum of, two channels of the two channel signal and configured to transmit the reproduced audio signal from the front face of the housing in a forward direction substantially orthogonal to the output plane; one or more second transducers mounted within the housing and behind the front face of the housing for reproducing an audio signal comprising the difference between the two channels of the two channel signal; and a duct partially formed by and positioned in front of the front face, the duct being associated with, and extending from, the one or more second transducers to openings in front of the front face of the housing, the duct being configured to conduct the audio signal reproduced by the one or more second transducers such that the audio signal reproduced by the one or more second transducers is transmitted in the duct to the openings along a direction substantially parallel to the output plane from a point spaced in front of the output plane in the forward direction in which the audio signal reproduced by the one or more first transducers is transmitted.