4" (100 mm) Ultra-Light, Piezoelectric, Wide Range Speaker

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This all-weather, ultra-lightweight speaker is ideal for voice or alarm applications. Designed for the military, it is so lightweight in can be worn. The phenolic cone and plastic housing helps prevent moisture absorption, especially useful in highly humid locations.  Its solid state piezo electric driver means it can reliably handle high power without burning out; also works great for audio systems in magnetic resonant imaging rooms as an MRI speaker.

  • Ultra-lightweight and ultra-thin
  • 100 Watts, program power
  • High impedance, approximately 1000 ohms.
  • Treated phenolic cone
  • Includes screw-down grille with built in windscreen
  • Piezo Bender, Solid State Technology, appears capacitive electrically
  • Structural corrosion-proof plastic structure
  • Treated phenolic surround
  • The only piezo speaker manufactured in North America

This speaker operates with no voice coil and no magnet. It is feather light, less than 1.13 oz and ideal for near field voice and signal / buzzer audio. MISCO engineers designed it to handle 50 Watts (EIA).

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More Information
Brand Name MISCO OEM
Speaker Type Voice
Shape of Speaker Round
Size, Nominal (inch & mm) 4" (100 mm)
Environment Outdoor / Indoor
Application Aerospace, Commercial, Medical, Military, Outdoor , Signal / Alarm Systems, Voice Communications
RoHS Compliant No
Rated Impedance (Ω) 1000
Rated Power IEC268-5 (W) 50 Watts
Program Power (W) 100
Sensitivity (dB SPL) ¹ 80
Frequency Range (Hz) 450 - 20,000
Resonant Frequency (Fs) (Hz) 500
Nominal Impedance (Z) (Ω) 1000
Total Q Factor (Qts) 0.83
Basket Type Plastic
Terminal Size (mm) 5.2 x 0.5mm (0.205" x 0.02")
Magnet Material Piezo Element
Cone Body Material Phenolic treated cloth - yellow
Cone Surround Material Phenolic treated cloth - yellow
Net Weight (kg) 0.032
Technical Notes

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