Amplifier unit
US5181251A · kind A · utility
14Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1991 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | Sep 25, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In order to obtain for electrodynamic loudspeakers, on the one hand, the energy-favorable acoustical enhancement by the bass reflex principle and, on the other hand, to be able to use the motional control of the diaphragm of the electrodynamic loudspeaker by controlling such by means of an amplifier exhibiting negative output impedance, it is proposed to compensate the thus resulting unfavorable frequency characteristic by a forwardly connected circuit which generates an inverse characteristic with respect to the unfavorable frequency characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.