Enclosures for loudspeaker drive units
US6019188A · kind A · utility
19Cited by
6References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1997 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Oct 16, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/288
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An enclosure (1) for a loudspeaker drive unit (5) comprises a chamber (2) defined by one or more walls (3), in which a loudspeaker drive unit (5) is to be mounted. A port member (4) defines a passageway providing fluid communication between the interior and the exterior of the chamber (2). The internal surface (9) of the port member (4) is, at least in part, of a coarse texture. A multiplicity of indentations (11) and/or peaks may provide the coarse texture. This reduces so-called "chuffing" noises caused by air movement through the port member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.