Compound system speaker
专利汇可以提供Compound system speaker专利检索，专利查询，专利分析的服务。并且PURPOSE:To provide a speaker which has high efficiency and permits sufficiently low tone reproduction by so constituting the speaker that a dynamic type full face driving speaker and a piezoelectric speaker are combined. CONSTITUTION:A diaphragm 7 is constituted by forming a full face electrode layer 9 through vapor deposition, etc. on one side of a high polymer piezoelectric film 8 composed of thin film of polyvinylidene fluoride or other, forming a zigzag form coil conductor layer 10 on the other side, spreading this with a frame 11 and disposing bar magnets 12 and magnetic plates 12 supporting these and simultaneously forming magnetic circuits on both sides. As a result, by connecting the low impedance terminals 17, 18 of a transformer 15 to which signal voltage input to the coil conductor layer 10 and high impedance terminals 19, 20 to the electrode layer 9 via diodes 23, 24, the speaker which permits low tone reproduction with high efficiency may be provided by making use of the advantages of the dynamic type and piezoelectric type.，下面是Compound system speaker专利的具体信息内容。
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