Acoustic transducer assembly

摘要

Driver for an acoustic transducer having a moving coil of substantially equal length to the air gap. The air gap may itself be extended in length using an upper or lower lip, or both. A stationary coil is also provided. The moving and stationary coils can be controlled by suitable control blocks to form an electromagnet-based transducer with reduced distortion.

主权项

1. A driver for an acoustic transducer comprising:
a moving diaphragm; a driver body formed of a magnetic material, the driver body comprising:
a center post;an outer wall coupled to the center post via a bottom portion of the driver body; andan annular plate extending inwardly toward the center post from the outer wall; a moving coil coupled to the diaphragm, the moving coil disposed at least partially within an air gap formed between the annular plate and the center post; a stationary coil disposed within a cavity defined by the annular plate, outer wall, bottom portion and center post, the stationary coil being operable to magnetize the magnetic material for inducing magnetic flux in the air gap; and at least one additional annular plate, the at least one additional annular plate defining at least one additional air gap and at least one additional cavity.