| 摘要 |
<p>Technical field: Electro-acoustics. Realization of a speaker cone which may reproduce super low frequencies by the use of a usual cone speaker. Technical subject-matter: In conventional techniques, it costs much to reproduce super low frequencies. This invention gives a solution by the provision of thermoplastic adhesive to a simple speaker cone, thereby improving vibration mode thereof in the peripheral portion. Use of bass weight enables to reproduce super low frequencies by utilizing a felt ring. Application of the invention: The invention is available to any speaker unit thereby enabling reproduction of super low frequencies even by a small size speaker at the reduced cost. This speaker is particularly useful for stereo reproduction systems. </p> |
