Patent ID: 8630441

Claim:
A multi-magnet speaker, comprising: a frame defining a hollow space and a brace at a middle portion thereof; a magnetic system received in the hollow space and defining a yoke and a plurality of magnetic gaps; the yoke defining a bottom wall, a plurality of sidewalls extending upwardly from the periphery of the bottom wall and a groove formed in a middle portion of the yoke; a diaphragm mounted on the frame and defining a plurality of vibrating membranes, each of the vibrating membrane defining a dome part and an arcuate portion radially extending from the periphery of the dome part; a plurality of coils each defining an end suspended in the magnetic gap and another end connected with the vibrating membrane, respectively; wherein the diaphragm further defines a connecting part fixed to the brace of the frame and an edge fixed to a periphery of the frame; and wherein the magnetic system further defines a plurality of main magnets each located between two opposed sidewalls, a plurality of mid-magnets located between two adjacent main magnets, and two auxiliary magnets attach to two ends of the yoke.