Loudspeaker
US4130174A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1977 |
| Grant date | Dec 19, 1978 |
| Priority date | — |
| Expiry date | May 25, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A loudspeaker having precise imaging, neutrality of frequency response, and controlled mid-range and tweeter dispersion. The loudspeaker incorporates an open cell, reticulated polyurethane cartridge for placement of a supertweeter mounted in the loudspeaker at an angle of 45.degree. from other speaker axes. The housing therefore may be positioned so as to adjust the high frequency acoustic radiation to the right or the left of the loudspeaker frontal axis, thus making a mirror image pair of the loudspeakers possible. In addition, angled corner posts are arranged at the front corners of the loudspeaker in order to reflect back into the loudspeaker mid-range and high frequency sounds that strike the posts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.