MIL-STD-2115, MILITARY SPECIFICATION: AUDIO DEVICES AND COMPONENTS, SELECTION AND USE OF (25 MAR 1982) [NO S/S DOCUMENT]., This standard consists of the following: a. Selected standard audio components chosen jointly by the Departments of the Army, Navy, and the Air Force for use in the design and manufacture of military equipment under the jurisdiction of the Department of Defense. b. Guides for the choice and application of audio components for use in military equipment.