Circuit system for switching loudspeakers

Electrical audio signal processing systems and devices – Audio transducer protection circuitry

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

381 81, 381 85, 381123, H03G 320, H04R 2700

Patent

active

057518181

ABSTRACT:
A circuit system for selectively switching between main and remote loudspeakers includes a pair of input terminals for applying an input audio signal to the loudspeakers. A first selector switch contact is provided in series with the main loudspeakers. A second selector switch contact is provided in series with the remote loudspeakers. A current-dependent resistance element is provided in series with the remote loudspeakers to protect the remote loudspeakers from overdrive. The circuit system may also include a second current-dependent resistance element and a cooperating defeat switch contact as well as a resistor and associated load limiting switch contact all in series with the remote loudspeakers.

REFERENCES:
patent: 2237448 (1941-04-01), Reinhard
patent: 2830117 (1958-04-01), Blow
patent: 3662107 (1972-05-01), Vorgan
patent: 3890465 (1975-06-01), Kaizu
patent: 3925708 (1975-12-01), Picciochi
patent: 3959736 (1976-05-01), Grosjean
patent: 4004095 (1977-01-01), Cardone
patent: 4122507 (1978-10-01), Queen
patent: 4163119 (1979-07-01), Baba et al.
patent: 4296278 (1981-10-01), Cullison et al.
patent: 4301330 (1981-11-01), Trump
patent: 4330686 (1982-05-01), Roe
patent: 4468806 (1984-08-01), Gaulden et al.
patent: 4490770 (1984-12-01), Phillimore
patent: 4864624 (1989-09-01), Tichy
patent: 4944015 (1990-07-01), Juve et al.
patent: 4953218 (1990-08-01), Hughes, Jr.
patent: 5131048 (1992-07-01), Farenelli et al.
patent: 5165097 (1992-11-01), Morishima et al.
patent: 5343534 (1994-08-01), Dorrough et al.
patent: 5479516 (1995-12-01), Damato et al.
patent: 5526434 (1996-06-01), Wakui
patent: 5528695 (1996-06-01), Klippel
patent: 5577126 (1996-11-01), Klippel

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Circuit system for switching loudspeakers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit system for switching loudspeakers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit system for switching loudspeakers will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-991258

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.