MIL-DTL-12606F, DETAIL SPECIFICATION: LOUDSPEAKER, PERMANENT MAGNET (UNENCASED, 3-INCH AND 4-INCH DIAMETER CONE, 2-WATT; FUNGUS-, AND IMMERSION-RESISTANT), TYPE LS-445/U, M12606-01, AND M12606-02 (01-OCT-2018)

MIL-DTL-12606F, DETAIL SPECIFICATION: LOUDSPEAKER, PERMANENT MAGNET (UNENCASED, 3-INCH AND 4-INCH DIAMETER CONE, 2-WATT; FUNGUS-, AND IMMERSION-RESISTANT), TYPE LS-445/U, M12606-01, AND M12606-02 (01-OCT-2018)., This specification covers type LS-445/U, M12606-01 and M12606-02, unencased, permanent magnet loudspeakers with a 2-watt normal (4-watt peak) input. These loudspeakers are fungus-, and immersion-resistant, and have a voice coil impedance of 8 ± 1 ohms. The cone and spider are made of polyamide-based phenolic material (see 6.1).