4" (100 mm) Mil-Spec, Voice Communication Speaker

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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
Speaker Type Voice
Shape of Speaker Square
Size, Nominal (inch & mm) 4" (100 mm)
Environment Outdoor / Indoor
Application Military, Outdoor , Signal / Alarm Systems, Voice Communications
RoHS Compliant No
Rated Impedance (Ω) 8
Rated Power IEC268-5 (W) 2 Watts
Program Power (W) 2
Sensitivity (dB SPL) ¹ 91
Frequency Range (Hz) 300 - 7,000
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
Basket Type Cast aluminum
Terminal Size (mm) 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 (g) 156
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