LS-11A

This unit is a four inch, direct radiator, dynamic type loudspeaker. It is housed in a metal inclosure and is resistant to weather, gun blast and immersion. The unit is intended for use with ground service tactical equipments where resistance to gun-fire and immersion are requirements.

Specifications

CONSISTS OF

1 Loudspeaker, Permanent Magnet LS-11A

PHYSICAL DESCRIPTION

Diameter - 4 inches (101. 60 mm)

Mounting Dimensions - Adjustable mounting bracket with two 9/32 inch diameter holes spaced 1-1/2 inch C to C

Plug - PJ-055B

Over-all Dimensions

Length - 7-1/32 inches (178.59 mm)

Width - 4-29/32 inches (124.62 mm)

Depth - 3-5/16 inches (84. 14 mm)

Case Material - Metal

INPUT

Voice coil impedance - 8 ohms

Power handling rating - 2 watts (warble tones)

Frequency range - 300 to 7,000 cps

Transformer data - 250 ohms primary impedance

Resistant Characteristics - Resistant to gun-blast, immersion, humidity, temperature extremes, and bounce

Operating Conditions

Temperature - From - 65 deg F to + 160 deg F

Elevation - 5,000 feet above sea level

Relative Humidity - 95 percent

Salt-Laden Air - As encountered in coastal regions

Nonoperating Conditions

Temperature - From -80 deg F to +160 deg F for 72 hrs

Elevation - 50, 000 feet above sea level

Relative Humidity - 100 percent

Reference Files

MIL-L-12606

MIL-L 12632