STEREO LOUD SPEAKERS

Brand Owner Address Description
SDA TRUE-STEREO LOUDSPEAKER POLK INVESTMENT CORPORATION SUITE 1704 BANK OF DELAWARE BLDG. WILMINGTON DE 19899 STEREO LOUD SPEAKERS;TRUE STEREO LOUDSPEAKER;THE LINING IN THE MARK ON THE DRAWING IS A FEATURE OF THE MARK AND DOES NOT INDICATE COLOR.;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. This invention concerns a distributed stereo audio system (1). Distributed stereo audio systems are used to provide stereo sound to several rooms or areas from a single source of signal. The system includes two or more speakers (2, 3) for the broadcast of stereo audio signals; a source of stereo audio signals; a stereo amplifier (4) to amplify stereo audio signals and drive the speakers; and a mains operated electrical power supply (10) to provide power to the amplifier. The amplifier is located in the same room as the speakers, and remote from the signal source and power supply. The amplifier is connected to the signal source and power supply by means of a category 5 four pair twisted cable (11) which provides, in respective twisted pairs, right channel audio signals (12) from the signal source to the amplifier, left channel audio (13) from the signal source to the amplifier, DC power (14) from the power supply to the amplifier, and control signals (20) from the amplifier to the signal source.