4 Inch (102 mm), 8 Ohm Voice Range Speaker

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Built to Order

The RDC4WI driver creates sound that is ideal for outdoor voice communications in intercom and drive-thru applications while remaining RoHS compliant. A waterproofed cone provides protection against moisture absorption from rain and high humidity.

  • Voice range speaker
  • 4” (100 mm) steel basket diameter
  • 4 watts, 8 ohm, 93 dB SPL
  • -67°F (-55°C) to +185°F (+85°C)
  • Acrylic-treated cloth cone
  • RoHS compliant

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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
Application Voice Communications
RoHS Compliant Yes
Rated Impedance (Ω) 8
Rated Power IEC268-5 (W) 4 Watts
Program Power (W) 8
Sensitivity (dB SPL) ¹ 93
Frequency Range (Hz) 180 - 6k
DC Resistance (Re) (Ω) 8
Resonant Frequency (Fs) (Hz) +/- 15% 291
Nominal Impedance (Z) (Ω) 8
Total Q Factor (Qts) 3.21
Basket Type Stamped Steel
Terminal Size (mm) 4.7 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 Acrylic Treated Cloth
Spider Material Cotton
Dust Cap Material Felt
Net Weight (kg) 0.242
Technical Notes

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