Loudspeaker using Contour Field Hard Magnet Poles and Yoke Construction

摘要

Several embodiments of the instant invention incorporate a loudspeaker design utilizing hard magnetic poles and yokes. The magnetic field of the loudspeaker is created and guided with a series of critically formed hard magnetic structures guiding the magnetic field from the primary magnet to the gap in a loop of hard magnetic material, replacing the soft magnetic materials normally used. Magnetization of the components of the hard magnetic loudspeaker driver with radial pole patterns—a yoke radial magnet, a washer pole magnet and a yoke upper ring magnet—is performed with these components in their final assembly relationships.

主权项

1. A loudspeaker driver assembly comprising:
a yoke with a center cavity, the yoke comprising hard magnetic material; and a center pole piece comprising hard magnetic material, wherein the center pole piece is positioned within the center cavity of the yoke with a pole—yoke gap between a side of the yoke and a side of the center pole piece.