MB-21B — LOUDSPEAKER,PERMANENT MAGNET

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

MB-21B: LOUDSPEAKER,PERMANENT MAGNET.

The LOUDSPEAKER,PERMANENT MAGNET is a the manufacturer industrial component. Key specifications include power_rating: 5.00 WATTS NORMAL AND 10.00 WATTS PEAK, usage_design: OUTDOOR, overall_width: 1.250 INCHES NOMINAL IN, overall_height: 2.500 INCHES NOMINAL IN, overall_length: 2.500 INCHES NOMINAL IN, mounting_method: BRACKET(S). This part is cataloged in the U.S.

Government catalog under NSN 5965-01-426-3215, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

MB-21B

NSN: 5965-01-426-3215
FSC: 5965 — Headsets, Handsets, Microphones and Speakers
CAGE: 0HBN8 — POLY-PLANAR INC (USA)

SPECIFICATIONS

power_rating	5.00 WATTS NORMAL AND 10.00 WATTS PEAK
usage_design	OUTDOOR
overall_width	1.250 INCHES NOMINAL IN
overall_height	2.500 INCHES NOMINAL IN
overall_length	2.500 INCHES NOMINAL IN
mounting_method	BRACKET(S)
transducer_type	CONE
special_features	STAINLESS STEEL ENCLOSURE; 10-INCH WIRE ATTACHED TO SPEAKER AT ONE END AND 2.5 MM PHONE PLUG AT THE OTHER; COMPLETED WITH STAINLESS STEEL MOUNTING BRACKET; DESIGNED FOR MARINE USE MM
style_designator	RECTANGULAR/SQUARE ENCLOSURE
installation_design	NONPORTABLE
transducer_diameter	2.5 INCHES NOMINAL IN
end_item_identification	RIGID HULL INFLATABLE BOAT (RHIB)
NSN	5965-01-426-3215

COMPONENT DIAGRAM

KEY FEATURES

•

MOUNTING FACILITY QUANTITY: 2

•

USAGE DESIGN: OUTDOOR

•

TRANSDUCER TYPE: CONE

•

MOUNTING METHOD: BRACKET(S)

•

STYLE DESIGNATOR: RECTANGULAR/SQUARE ENCLOSURE

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	2.500 INCHES NOMINAL IN
MOUNTING FACILITY QUANTITY	2
USAGE DESIGN	OUTDOOR
TRANSDUCER TYPE	CONE
MOUNTING METHOD	BRACKET(S)
STYLE DESIGNATOR	RECTANGULAR/SQUARE ENCLOSURE
OVERALL LENGTH	2.500 INCHES NOMINAL IN
OVERALL WIDTH	1.250 INCHES NOMINAL IN
TRANSDUCER DIAMETER	2.5 INCHES NOMINAL IN
IMPEDANCE RATING IN OHMS	4.0 VOICE COIL NOMINAL

OTHER ITEMS IN FSC 5965 — Headsets, Handsets, Microphones and Speakers

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5965-00-001-1492 5965-00-001-7591 5965-00-001-7592 5965-00-001-7593 5965-00-003-2686 5965-00-003-2690 5965-00-003-4754 5965-00-004-5510

SUBSTITUTES & CROSS-REFERENCES 1

MB21Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is MB-21B?

MB-21B is a LOUDSPEAKER,PERMANENT MAGNET.

What parts can replace MB-21B?

There is 1 known substitute for MB-21B: MB21. Substitute compatibility should be verified for your specific system.

What is the NSN for MB-21B?

MB-21B is cataloged in the U.S. Government catalog under NSN 5965-01-426-3215. This indicates validated use in U.S. government and defense supply chains.

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MB-21B — LOUDSPEAKER,PERMANENT MAGNET

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