4 Inch (100 mm) 45 Ohm, Waterproof Voice Range Speaker

Brand Name
Part #
Built to Order

A specialized, all-weather replacement speaker for your voice applications—the DC4WI-45A is an ideal speaker for communication systems in need of a 45 ohm driver. Dual lug terminals allow for multiple connection options. This driver sports an acrylic treated cloth cone that prevents moisture absorption from rain and high humidity.

  • Voice range speaker
  • 4” (100 mm) steel basket diameter
  • 4 watts, 45 ohm, 83 dB SPL
  • 0.6" copper voice coil, aluminum former
  • Acrylic treated cloth cone, 2.35 oz. ferrite magnet

Download Product Specifications (PDF) »

More Information
Brand Name MISCO OEM
Speaker Type Voice
Shape of Speaker Square
Size, Nominal (inch & mm) 4" (100 mm)
Environment Outdoor / Indoor
Application Outdoor , Voice Communications
RoHS Compliant No
Rated Impedance (Ω) 45
Rated Power IEC268-5 (W) 4 Watts
Program Power (W) 8
Sensitivity (dB SPL) ¹ 83
Frequency Range (Hz) 200 - 6,000
DC Resistance (Re) (Ω) 45
Resonant Frequency (Fs) (Hz) +/- 15% 280
Nominal Impedance (Z) (Ω) 45
Total Q Factor (Qts) 2.3
Basket Type Stamped Steel
Terminal Size (mm) 5.2 x 0.5
Voice Coil Diameter (mm) 14.3
Voice Coil Wire Material High Temperature Copper
Voice Coil Former Material Aluminum
Magnet Material Ferrite
Magnet Weight (g) 68.04
Cone Body Material Acrylic Treated Cloth
Cone Surround Material Treated Cloth
Spider Material Cotton
Dust Cap Material Felt
Net Weight (kg) 0.25
Technical Notes

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