发明名称 LOUDSPEAKER ASSEMBLY
摘要 <p>The assembly has a moving cone (4) which is mounted with its apex towards the desired direction of sound propagation. The cone (4) is driven by a moving coil (13) in the field of a central magnet (7) acting via pole pieces (6) and (8).</p>
申请公布号 WO1983001884(A1) 申请公布日期 1983.05.26
申请号 GB1982000296 申请日期 1982.10.19
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