Patent ID: 9071908
Filing Date: 2015-06-30
Classification: H04R

Abstract:
1. A loudspeaker ( 1 ) including a first driver, which is configured to produce a first frequency band and a corresponding first acoustic axis, a second driver, which is configured to produce a second frequency band, which is different from the first frequency band but may overlap in a cross-over region, and which second frequency band has a second acoustic axis, and an enclosure enclosing said drivers and comprising a three dimensional wave guide positioned on a front surface of the enclosure and around the first driver, wherein the three dimensional waveguide comprises an acoustically selectively transparent portion which is acoustically essentially reflecting to sound waves of the first frequency band propagating a direction angled to the first acoustic axis, the selectively transparent portion is essentially transparent to sound waves of the second frequency band propagating in the direction of the second acoustic axis through the selectively transparent portion, and in that the second driver (