AIC-13. This loudspeaker is a horn type unit with a frequency response of 200-7,000 Hz, nominal 16 ohms voice coil impedance, and a 20 watt peak power output \(see 6.1\).

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MIL-DTL-25547C

3.2.2 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or

environmentally preferable materials should be used to the maximum extent possible provided that the

material meets or exceeds the operational and maintenance requirements, and promotes economically

advantageous life cycle costs.

3.3 Design and construction.

3.3.1 Dimensions. The dimensions of the loudspeaker shall be as shown on figure 1.

3.3.2 Width of air gap. The air gap for the voice coil in the permanent magnet shall be such that the

difference between the minimum width of the radial air gap and the maximum thickness of the voice coil

shall be at least 0.014 inch.

3.3.3 Weight. The weight of the loudspeaker shall not exceed 1.6 kilograms.

3.3.4 Color. The loudspeaker color shall be lusterless gray, color #36270 in accordance with

FED-STD-595.

3.3.5 Terminal board. The voice-coil lead wire of the loudspeaker shall be brought to a terminal board on

the mounting plate of the loudspeaker assembly, as shown on figure 1. The terminal board shall be covered

with a metal protective shield with a grommet to permit the entry of a 5/16-inch diameter cable. The terminal

board shall be constructed of a suitable high-grade insulating material and shall contain a minimum of two

screws which will accept a No. 6 wire terminal.

3.4 Voice coil impedance. When loudspeakers are tested as specified in 4.6.2, the impedance of the

voice coil, mounted in a complete loudspeaker assembly, shall be 16 � 3.2 ohms.