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Loudspeakers    Sound Screen Devices    Electrodynamic Earphones    Microphones and accessories    Megaphones    Radio-line devices	Electrodinamic Earphones Type Rated Frequency Range Rated Impedance at 1000 Hz ?aaioia iiuiino i?e iiieiaeii ieai ia caoeiai iaeyaaia 94 dB Weight     Hz Ohm mW kg DS 200/200 20-12000 200 1 0,50 DS 200/Hi-Fi 40-16000 200 1 0,70 SEM-01 300-3400 350-450 1 0,027 DS 200/2 40-16000 200 1 0,22