73078793
Mar 1, 1976
Sep 7, 1976
SOUND PRODUCING EQUIPMENT-NAMELY BOOSTER AMPLIFIER, EQUALIZERS, MIXERAMPLIFIERS, PRE-AMPLIFIER MODULES, MIXER EXTENDERS, COMPRESSION DRIVERS, LOUDSPEAKER ASSEMBLIES, RADIAL HORNS, SPEAKER MATCHING TRANSFORMERS, CONE SPEAKERS, CROSSOVER NETWORKS, MULTICELLULAR HORNS AND PANELS
Electrical and Scientific Apparatus