Abstract
A voice coil assembly for a speaker comprises a substrate, a spiral pattern coil formed on the substrate, at least one holder fixedly secured to the periphery of the substrate, and at least one metallic layer attached to said substrate. The metallic layer facilitates the dissipation of the heat generated by the voice coil, while a pair of metallic layers establishes electrical connections between the voice coil terminals and external terminal strips. The shape of the opening of the holder(s) may be made other than rectangular for avoiding the occurrence of standing waves which cause the frequency characteristic of the speaker to be deteriorated.
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