Title:
REPRODUCTION OF SUPER LOW FREQUENCIES BY BASS WEIGHT
Document Type and Number:
WIPO Patent Application WO/1981/000661
Kind Code:
A1
Abstract:
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.
Inventors:
SUWABE T (JP)
Application Number:
PCT/JP1979/000282
Publication Date:
March 05, 1981
Filing Date:
November 01, 1979
Export Citation:
Assignee:
SUWABE T
International Classes:
H04R1/22; H04R7/12; H04R7/26; (IPC1-7): H04R1/20; H04R7/12
Foreign References:
| JPH0371599Z1 | ||||
| JPS5143123U | 1976-03-30 | |||
| JPS5188219U | 1976-07-15 | |||
| JPS533781Y2 | 1978-01-31 | |||
| JPS5421536U | 1979-02-13 |
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