Loudspeaker having adjustable magnet
US8300874B2 · kind B2 · utility
0Cited by
9References
19Claims
0Family size
Inventor
Key dates
| Filing date | Jun 19, 2009 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Oct 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Loudspeakers are provided that include a moveable magnet that can be positioned relative to the speaker piston. A user of the loudspeaker may position the moveable magnet to achieve a desired tone, distortion, or other sound without requiring the loudspeaker to be operated at an undesirable sound pressure level. The loudspeaker may include an indicator showing the relative position of the magnet relative to the piston to the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.