2.5" (66 mm) Square, Waterproof Voice Range Speaker

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This all-weather speaker is ideal for an outdoor voice communications device or one exposed to extreme moisture or temperature. This is a universal fit 2.5-inch speaker ideal for small enclosures and tight spaces.The high energy magnet delivers high levels of output for voice applications. The acrylic treatment helps ensure long life both indoors and out (when used inside a weatherized enclosure).

  • Voice range speaker
  • 2.5" (66 mm) basket diameter
  • 4 watts, 8 ohms, 88 dB SPL
  • 0.7" copper voice coil, aluminum former
  • Ferrite magnet, stamped steel basket
  • Acrylic treated cloth & cone

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More Information
Brand Name MISCO OEM
Speaker Type Voice
Shape of Speaker Square
Size, Nominal (inch & mm) 2" (50 mm)
Environment Outdoor / Indoor
Application Indoor, Medical, Outdoor , Signal / Alarm Systems, Transit, Voice Communications
RoHS Compliant Yes
Rated Impedance (Ω) 8
Rated Power IEC268-5 (W) 4 Watts
Program Power (W) 8
Sensitivity (dB SPL) ¹ 88
Frequency Range (Hz) 350 - 4,500
DC Resistance (Re) (Ω) 6.3
Resonant Frequency (Fs) (Hz) 459
Nominal Impedance (Z) (Ω) 8
Mechanical Q Factor (Qms) 8.9
Electrical Q Factor (Qes) 3.9
Total Q Factor (Qts) 2.70
Basket Type Stamped steel with zinc plating
Terminal Size (mm) 2.74 x 0.5
Voice Coil Diameter (mm) 17.8
Voice Coil Wire Material Copper
Voice Coil Former Material Aluminum
Magnet Material Ferrite
Magnet Weight (g) 68
Cone Body Material Acrylic treated cloth
Cone Surround Material Acrylic treated cloth
Spider Material Acrylic treated cloth
Dust Cap Material Felt
Net Weight (kg) 0.21
Technical Notes

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