Patent ID: 7051835
Filing Date: 2006-05-30
Classification: H04R

Abstract:
1. A bass-reflex loudspeaker construction comprising: a loudspeaker chamber delimited by a loudspeaker enclosure structure, a reflex duct connected to the loudspeaker chamber which connects the loudspeaker chamber to a space outside the loudspeaker enclosure, the reflex duct having an inlet with a cross-section that is larger than a cross-section of a center portion of the reflex duct, and at least one loudspeaker unit mounted to the loudspeaker enclosure structure which forms a portion of the structure delimiting the loudspeaker chamber, wherein the loudspeaker enclosure structure comprises a curved spiral structure which is closed at both ends so as to form the loudspeaker chamber, and the reflex duct is formed at least partially on an outer periphery of the spiral structure.