| 发明名称 |
An electrodynamic transducer with a mechanical filter. |
| 摘要 |
<p>An electrodynamic transducer with a mechanical filter as coupling element between voice coil former (3) and cone (1) in order to obtain a frequency characteristic whose high frequency roll-off begins at a lower frequency, in which a part (7) of the centring diaphragm (4) situated within the periphery of the voice coil former is used as a mechanical filter.</p> |
| 申请公布号 |
EP0030758(A1) |
申请公布日期 |
1981.06.24 |
| 申请号 |
EP19800201144 |
申请日期 |
1980.12.03 |
| 申请人 |
N.V. PHILIPS' GLOEILAMPENFABRIEKEN |
发明人 |
KAIZER, ADRIANUS JOZEF MARIA;KOPINGA, WIERT |
| 分类号 |
H04R9/02;H04R1/22;H04R7/16;H04R7/26;H04R9/04;(IPC1-7):04R7/26;04R9/04;04R7/16 |
主分类号 |
H04R9/02 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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