MIL-DTL-9415B
2.3 Non-Government publications. The following documents from a part of this document to the extent specified
herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.
NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)
NEMA HP 3
-
Electrical and Electronic PTFE (Polytetrafluoroethylene) Insulated High Temperature
Hook-up Wire; Types ET (250 Volts, E (600 Volts), and EE (1000 Volts) (DoD
adopted)
(Copies of these documents are available online at https://www.nema.org or from the National Electrical
Manufacturer's Association, 1300 North 17th Street, Suite 1847, Rosslyn VA 22209.)
2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited
herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws
and regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 First article. When specified (see 6.2), dynamic loudspeakers shall be subject to first article inspection in
accordance with 4.3.
3.2 Materials. Materials shall be as specified herein and referenced drawings. However, when a definite material
is not specified, a material shall be used which will enable the dynamic loudspeaker to meet the performance
requirements of this specification. Acceptance or approval of any constituent material shall not be construed as a
guarantee of the acceptance of the finished product.
3.2.1 Substitution of materials and processes. If a manufacturer, either prior to or during production, desires to
substitute another material or process for one specified in the specification, or if desires to substitute for a particular
material or process previously approved, he shall first submit to the procuring activity. A statement to that effect,
describing the proposed substitution and the reason therefore, and shall submit evidence that the substitution
proposed will be at least as satisfactory as the specific material or process previously approved. At the discretion of
the procuring activity, samples may be required for use in determining, by laboratory tests, the suitability of the
proposed substitution.
3.2.2 Pure tin. The use of pure tin, as an underplating or final finish, is prohibited both internally and externally.
Tin content of Dynamic Loudspeaker LS-184A/AIC-10 components and solder shall not exceed 97 percent, by mass.
Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6.3).
3.3 Component parts. Dynamic Loudspeaker LS-184A/AIC-10 shall consist of a loudspeaker (acoustic transducer
component), an AF Amplifier AM-492B/AIC-10, and the housing for the loudspeaker, and the amplifier, as shown on
figure 1. The term complete assembly is taken to mean Dynamic Loudspeaker LS-184A/AIC-10, including all
component parts.
3.4 Loudspeaker.
3.4.1 Construction. The loudspeaker (acoustic transducer component) assembly is specified on figure 1.
3.4.1.1 Width of air gap. The difference between the minimum width of the radial air gap and the maximum
thickness of the voice coil shall be at least 0.018 inch (.457 mm) (see 4.5.1).
3.4.1.2 Lead wire flexibility. The loudspeaker lead wire shall show no evidence of damage to the conductors or to
the insulation as a result of the flexibility test specified herein. Loudspeaker lead wire is the connecting wire between
the terminal on the loudspeaker terminal board and the socket connector or connection (see 4.5.3.1).
3.4.1.3 Lead wire tubing. The loudspeaker lead wires shall be enclosed in an insulating tubing to insure that the
hookup leads are kept close together to improve lead dress. The lead wire tubing shall show no evidence of damage
as a result of the flexibility test (see 3.4.1.2).
2
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business