Speaker system
US5333204A · kind A · utility
35Cited by
2References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1992 |
| Grant date | Jul 26, 1994 |
| Priority date | — |
| Expiry date | Apr 1, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/288
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker system has a bass-reflex duct provided in a cabinet. A sub-duct is provided on a central portion of the bass-reflex duct. The sub-duct is communicated with the bass-reflex duct, and filled with sound absorbing material for absorbing unnecessary resonance generated in the bass-reflex duct.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.