Loudspeaker

摘要

The present invention provides a loudspeaker with a port tube having an acoustic leakage path through a motile part thereof. In this way, excess energy caused by longitudinal resonance at higher frequencies is radiated transversely through the port tube walls rather than contributing to the output of the loudspeaker itself.

主权项

1. A loudspeaker, comprising:
an enclosure defining an interior space and an exterior space; an acoustically radiating diaphragm, and a port conduit, acoustically coupling the interior space to the exterior space, and having an internal surface which is smooth at least in a direction parallel to said longitudinal axis, wherein the port conduit comprises at least one rigid conduit segment, coupled to a flexible conduit segment to form one or more motile parts in one or more openings in an otherwise rigid structure, the flexible conduit segment providing an acoustic leakage path in a direction transverse to a longitudinal axis of the port conduit the flexible conduit segment being impermeable and having a completely smooth inner surface.