Mechanical two-way loudspeaker
US4477699A · kind A · utility
35Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1982 |
| Grant date | Oct 16, 1984 |
| Priority date | — |
| Expiry date | Mar 10, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/063
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A mechanical two way loudspeaker includes a low frequency diaphragm arranged coaxially with one another which are driven by the same voice coil. In order to flatten the sound pressure versus frequency characteristic of the loud speaker in the high frequency range, the low frequency diaphragm is provided with a flat sound wave radiation surface. The flat surface may be of a honey-comb configuration, or may be made of a low density synthetic foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.