TRIPOLE SURROUND MATRIX

SOUND RECORDINGS FEATURING MUSIC, SPEECH AND/OR SOUND EFFECTS; AUDIO SOUND SYSTEMS, NAMELY, LOUDSPEAKERS, SOUND MIXERS AND MULTICHANNEL SOUND REPRODUCTION EQUIPMENT, NAMELY, AMPLIFIERS, SOUND PROCESSORS, LOUDSPEAKERS, AUDIO MIXERS, MICROPHONES, AND PLAYBACK DEVICES BEING CD PLAYERS, DVD PLAYERS, AND DIGITAL TAPE PLAYERS