4" Piezoelectric, Wide Range Speaker

Brand Name
Oaktron by MISCO
Model #
Part #
In stock

The MP-1103 is now available for customers looking for individual packaging. This all-weather, ultra-lightweight speaker is ideal for voice or alarm applications. Designed for the military, it is so lightweight it 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 Oaktron by MISCO
Model # MP-1103
Size, Nominal (inch & mm) 4" (100 mm)
Shape of Speaker Round
Speaker Type Voice
Application Aerospace, Commercial, Medical, Military, Outdoor , Signal / Alarm Systems, Voice Communications
Environment Outdoor / Indoor
RoHS Compliant No
Nominal Impedance (Z) (Ω) 1000
Rated Power IEC268-5 (W) 50 Watts
Rated Impedance (Ω) 1000
Program Power (W) 100
Frequency Range (Hz) 450 - 20,000
Sensitivity (dB SPL) ¹ 80
Resonant Frequency (Fs) (Hz) 500
Total Q Factor (Qts) 0.83
Basket Type Plastic
Terminal Size (mm) 5.2 x 0.5mm (0.205" x 0.02")
Voice Coil Winding Single Layer
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