LOUDSPEAKER, PERMANENT MAGNET (UNENCASED, 3-INCH AND 4-INCH DIAMETER CONE, 2-WATT; FUNGUS-, GUNBLAST-, AND IMMERSION-RESISTANT), TYPE LS-445/U, M12606-01, AND M132606-02
Electromagnetic Compatibility (EMC) including Electromagnetic Pulse (EMP) and Lightning Protection - Program and Procedures - Administrative Regulations