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NSN 5965-00-243-6420
The LS-166/U is the loudspeaker designed for use with all military radio sets having appropriate audio connector. Features include a mounting bracket as part of its rectangular enclosure, a 4 inches, 3 Watts, 8 Ohms permanent magnet cone type speaker and is coupled through a sealed, 8 Ohms to 600 Ohms impedance transformer. Frequency response is 300Hz to 7Khz, Field or vehicular use modes switch available. The connecting cord is terminated with a U-77/U connector (old type with U-79/U).