In-ceiling loudspeaker
US5952619A · kind A · utility
11Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1998 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Oct 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An in-ceiling loudspeaker is provided which comprises a woofer and at least three tweeters located below the woofer with respect to the ceiling with the woofer and tweeters arranged to radiate direct acoustic signals downwardly and widely spread from the loudspeaker, the three tweeters mounted at acute angles with respect to the horizontal plane which is parallel to the ceiling, the acute angle preferably being approximately 65.degree.. The three tweeters are regularly spaced equally at 120.degree. from each other between the axis of the tweeter and the plane of the ceiling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.