4" (102 mm) Mil-Spec, Voice Communication Speaker

Brand Name
MISCO OEM
Model #
NSN 5965-008-923665
Part #
LS445/U
Out of stock
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  • MSRP$299.00
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THIS IS A “BUILT TO ORDER” PRODUCT

This ruggedized voice-range speaker was designed for TOUGH DUTY for military communications. This speaker stands out from the rest of the field. If you need tough, this is the one.

  • Die cast aluminum design
  • NSN 5965-008-923665
  • Built & tested; IAW MIL-DTL-12606
  • Phenolic impregnated cone and dust cap
  • Meta-aramid laminate, voice coil form
  • Includes separate rubber gasket and steel front screen

Meeting and Exceeding MIL Specs, this speaker is designed to work in communication panels and can be surface or rear mounted. Its copolymer phenolic resins create an extremely stable and tough cone surface. A meta-aramid laminate form supports the voice coil. This rare laminate material is known to be one of the most heat resistant materials made today. A powder-coated aluminum basket is its frame. This combination of design elements can withstand the bumps and jumps of a combat tank and even the constant vibration of a C-5M Super Galaxy military transport in flight.  

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More Information
Brand Name MISCO OEM
Model # NSN 5965-008-923665
Speaker Type Voice
Shape of Speaker Square
Size, Nominal (inch & mm) 4" (102mm)
Environment Outdoor / Indoor
Application Military, Outdoor , Signal / Alarm Systems, Voice Communications
RoHS Compliant No
PRIMARY SPECIFICATIONS
Rated impedance (Ω) 8
Rated Power IEC268-5 (W) 8 Watts
Power, Program (W) 8
Sensitivity (dB SPL) ¹ 91
Frequency range (Hz) 300 - 7,000
SMALL SIGNAL PARAMETERS
DC resistance (Re) (Ω) 7.0
Resonant Frequency (Fs) (Hz) 590
Nominal Impedance (Z) (Ω) 8
Voice Coil Inductance (Le) (mH) 0
Total Q factor (Qts) 0.83
MATERIAL DESCRIPTIONS
Basket type Cast Aluminum
Terminal size 0.152" x 0.025"
Voice coil diameter (mm) 0.73" / 18.5mm
Voice coil wire material Copper
Voice coil former material Meta-Aramid Laminate
Magnet Material Barium Ferrite
Magnet weight (gm) 5.5 ounces (156 grams)
Cone body material Cloth Impregnated With Phenolic Resin
Cone surround material Cloth Impregnated With Phenolic Resin
Spider Material Cloth Impregnated With Phenolic Resin
Dust cap material Cloth Impregnated With Phenolic Resin
Net weight (kg) 0.56
Technical Notes

¹ Sensitivity is measured with 2.83 volt input, measured on-axis at 1 meter distance