Bass intensification device for speaker system
US6522757B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 10, 1999 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Mar 10, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a bass intensifying device for a speaker system, a passive radiator (5) constructed by a speaker having a voice coil (7) is disposed at a location where it receives a sound pressure from a main speaker (1) driven by a main amplifier (4). A motion feed-back circuit independently of the main amplifier (4) for driving the main speaker (1) is connected to this passive radiator (5). Since the motion feed-back circuit is closed only in the passive radiator (5), it is possible to reinforce the bass while preventing the motion feed-back circuit from degrading the sound quality of the main speaker (1). The selection of the main amplifier 4 for driving the main speaker is free.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.