Patent ID: 8430200

Claim:
A speaker apparatus comprising: a phase inversion-type enclosure in which a speaker unit and a bass reflex port are installed, the bass reflex port having a tubular body whose hollow cross-sectional area gradually becomes smaller from a first opening side toward an inside of the bass reflex port in a first axial direction of the bass reflex port and gradually becomes larger from the inside of the bass reflex port toward a second opening side in the first axial direction, a length in a second direction being not changing and constant along the first axial direction of the bass reflex port, the second direction being one direction of the hollow cross section of the tubular body; and a connecting space portion which connects the first opening side of the tubular body to an opening face of the enclosure, wherein the second direction is perpendicular to the opening face of the enclosure, and the second direction is different from the first axial direction.