Loudspeaker system
US4135600A · kind A · utility
11Cited by
5References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1977 |
| Grant date | Jan 23, 1979 |
| Priority date | — |
| Expiry date | Jan 12, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/288
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A loudspeaker system has a cabinet in which a loudspeaker is mounted, the cabinet supporting therein a hollow duct which provides sound communication between the exterior and interior of the cabinet. A standing wave prevention member made of a sound absorbent material is disposed within the duct in spaced relation thereto, the member being smaller in volume than the duct.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.