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Horn loudspeaker "10GRD-5" was produced since 1965. The horn directional loudspeaker of the type '' 10 GRD-5 '' is intended for the sounding of a large area in open spaces, streets or for large enclosed spaces. Rated power consumption of 2.5, 5 and 10 watts. The rated input voltage is 30, 120 and 240 V. The range of reproducible frequencies is 200 ... 4000 Hz.