Loudspeaker horn
US4187926A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1978 |
| Grant date | Feb 12, 1980 |
| Priority date | — |
| Expiry date | Dec 8, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/025
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A loudspeaker horn has a throat section with a rectangular cross section to which the driver unit is coupled. The throat section has substantially parallel side walls joined together by diverging top and bottom walls. The horn has a rectangular mouth which is formed by a bell section which runs between the throat section and the mouth with an angular divergence corresponding to the desired horn dispersion pattern. If the mouth is made square, equal horizontal and vertical low frequency directivity roll off can be provided. On the other hand, with the speaker of the present invention, various relative horizontal and vertical directivity control can be obtained with different aspect ratios for the mouth. The walls of the bell section may be additionally flared outwardly at a portion thereof near the mouth to provide improved midrange directivity control. The use of planar sides between the throat section and the mouth also makes for an improved directivity pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.