An acoustic waveguide for use with a first driver that generates midrange sound signals and a second driver that generates high-frequency sound signals, the acoustic waveguide comprises: a first mounting location at a top surface of the acoustic waveguide and configured to connect to the first driver ; a second mounting location at a rear surface of the acoustic waveguide and configured to connect to the second driver ; a first plurality of openings (16, 66a-f, 116a-f, 286a-f) in a front surface of the acoustic waveguide ; a second plurality of openings (18, 68a-f, 118a-f, 288) in the front surface of the acoustic waveguide , wherein the first plurality of openings (16, 66a-f, 116a-f, 286a-f) is interleaved with the second plurality of openings (18, 68a-f, 118a-f, 288); a first plurality of sound channels (30a-e, 130a-e, 230a-e) coupled to the first plurality of openings (16, 66a-f, 116a-f, 286a-f) and to the first mounting location , wherein the first plurality of sound channels (30a-e, 130a-e, 230a-e) are configured to carry the midrange sound signals from the first driver to the first plurality of openings (16, 66a-f, 116a-f, 286a-f); and a second plurality of sound channels (32a-d, 132a-d, 232a-d) coupled to the second mounting location and the second plurality of openings (18, 68a-f, 118a-f, 288), wherein the second plurality of sound channels (32a-d, 132a-d, 232a-d) are isolated from the first plurality of sound channels (30a-e, 130a-e, 230a-e) and are configured to carry the high-frequency sound signals from the second driver to the second plurality of openings (18, 68a-f, 118a-f, 288), wherein each sound channel of the second plurality of sound channels (32a-d, 132a-d, 232a-d) has a path length substantially equal to the path lengths of the other sound channels of the second plurality of sound channels (32a-d, 132a-d, 232a-d). a first mounting location at a top surface of the acoustic waveguide and configured to connect to the first driver ; a second mounting location at a rear surface of the acoustic waveguide and configured to connect to the second driver ; a first plurality of openings (16, 66a-f, 116a-f, 286a-f) in a front surface of the acoustic waveguide ; a second plurality of openings (18, 68a-f, 118a-f, 288) in the front surface of the acoustic waveguide , wherein the first plurality of openings (16, 66a-f, 116a-f, 286a-f) is interleaved with the second plurality of openings (18, 68a-f, 118a-f, 288); a first plurality of sound channels (30a-e, 130a-e, 230a-e) coupled to the first plurality of openings (16, 66a-f, 116a-f, 286a-f) and to the first mounting location , wherein the first plurality of sound channels (30a-e, 130a-e, 230a-e) are configured to carry the midrange sound signals from the first driver to the first plurality of openings (16, 66a-f, 116a-f, 286a-f); and a second plurality of sound channels (32a-d, 132a-d, 232a-d) coupled to the second mounting location and the second plurality of openings (18, 68a-f, 118a-f, 288), wherein the second plurality of sound channels (32a-d, 132a-d, 232a-d) are isolated from the first plurality of sound channels (30a-e, 130a-e, 230a-e) and are configured to carry the high-frequency sound signals from the second driver to the second plurality of openings (18, 68a-f, 118a-f, 288), wherein each sound channel of the second plurality of sound channels (32a-d, 132a-d, 232a-d) has a path length substantially equal to the path lengths of the other sound channels of the second plurality of sound channels (32a-d, 132a-d, 232a-d). <EOS>