Multi-way coaxial loudspeaker with magnetic cylinder

摘要

A coaxial loudspeaker includes a permanent magnet positioned between a generally coaxially aligned first transducer having an associated permanent magnet and second transducer having an associated permanent magnet. In one embodiment, a magnetic cylinder is positioned between a woofer and a tweeter of a coaxial multi-way loudspeaker. An optional support structure, such as a plastic cylinder, may encompass the permanent magnet to enhance structural characteristics of the assembly. The woofer may include an external ceramic magnet extending around a center pole of the woofer.

主权项

1. A loudspeaker comprising:
a woofer having a permanent ring magnet positioned around a center pole extending through the permanent ring magnet, a voice coil positioned within an air gap formed between the center pole and a top plate contacting the permanent ring magnet, a frame, a diaphragm coupled to the frame and the voice coil, and a spider coupled between the frame and the voice coil; a tweeter having a center pole generally coaxially aligned with the center pole of the woofer, wherein the tweeter comprises a permanent ring magnet positioned around the center pole of the tweeter; and a permanent magnet extending between the center pole of the woofer and the center pole of the tweeter; wherein when the permanent ring magnet of the woofer is positioned with a north magnetic pole contacting the top plate of the woofer, the permanent magnet extending between the center pole of the woofer and the center pole of the tweeter is positioned with a magnetic south pole contacting the center pole of the woofer and a magnetic north pole contacting a bottom plate of the tweeter, and the permanent ring magnet of the tweeter is positioned with a magnetic north pole contacting the bottom plate of the tweeter.