MIL-DTL-24223/1B(SH)
Draft Dated 14 January 2014
A. Internal volume control using a quick connector (LS-305()/SIC, LS-530()/SIC).
B. External volume control using a rotary selector switches (LS-306()/SIC, LS-531()/SIC).
FIGURE 3. Wiring diagram and terminal designation.
Marking: The positive voice coil terminal shall be marked "+" by die stamping or in a manner that is not
obliterated by paint removal, chipping, or mild oxidation. Terminal boards shall be marked as shown on FIGURE 3.
For low stray magnetic field loudspeakers (LS-530()/SEC and LS-531()/SIC), an instruction plate shall be provided
on the front of these loudspeakers to indicate the correct mounting position to minimize stray magnetic field below
the loudspeaker. The instruction plate shall be in accordance with MIL-DTL-15024 Types A, B, F, or H; attachment
shall be by mounting screws.
Wiring diagram: See FIGURE 3 for applicable schematic wiring diagram for each enclosure.
ENVIRONMENTAL REQUIREMENTS:
Temperature: The operating temperature shall be 32 to 149 ° F (0 to 65 °C).
Stray magnetic field: Low stray magnetic field loudspeakers (LS-530()/SEC and LS-531()/SIC) shall not
exceed 105 gamma (0.105 millioersted). All material except the permanent magnet shall be non-magnetic having a
permeability of 2.0 or less after fabrication. The permeability of this material shall be determined as specified in the
stray magnetic field test of MIL-DTL-24223.
CHANGES FROM PREVIOUS ISSUE: Marginal notations are not used in this revision to identify changes
with respect to the previous issue due to the extent of the changes.
Preparing Activity:
Navy SH
(Project 5965-2012-003)
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