| 摘要 |
PURPOSE: A high effective magnetic circuit for a speaker is provided to maximize the radiation efficiency of a plurality of magnets to increase the input level of a speaker by distributing the magnets on a top of a yoke with constant gaps, thereby generating remarkably higher magnetic force and decreasing distortion, compared with other magnetic circuits of same size. CONSTITUTION: A pipe type or circular head(3) is projected on a top of a disk type yoke(2), and a through hole(4) is formed in the head(3). A plurality of magnets(5) have respectively cylindrical or rectangular shapes for maximizing a radiation area, and are disposed with constant gaps on a top of a body(2) of the yoke(1). A plate(6) is coupled to the magnets(5).
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