Patent ID: 11937061
Assignee: POLK AUDIO, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An audio speaker, comprising:
a frame;
a diaphragm operatively coupled to the frame;
a voice coil bobbin operatively coupled to the diaphragm, the voice coil bobbin having an interior lumen;
a magnetic circuit comprising a magnet, a front plate, a pole piece having a vented distal pole tip defining a plurality of first lumens, and a pole yoke positioned on an opposite side of the magnet relative to the front plate, the pole piece and the front plate being separate from one another by a gap region;
a voice coil positioned about and carried by the voice coil bobbin and extending within the gap region between the pole piece and the front plate, the voice coil being configured to convert an electric current into an electro-motive force for imparting vibrational movement to the voice coil bobbin and the diaphragm; and
a spacer positioned adjacent to the front plate, the spacer defining a plurality of second lumens aligned with the plurality of first lumens, the second lumens providing airflow paths from an ambient environment outside the audio speaker and configured to impinge air directly on the voice coil.