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Two-way acoustic system "AC 80-2-1" was produced since 1969 by the Riga Radio Factory named after A.S. Popov. These speakers were included in the Riga-101 radio set (102). Type of design "closed box". They are completed with 4GD-5 woofer (reduced copy 6GD-2) and HF 1GD-3 Sensitivity AC -93 dB. The range of reproduced sound frequencies 80 ... 16000 Hz. Rated power input 4 watts. The input impedance is 8 ohms. Dimensions 470x240x205 mm.