3" (77 mm) 4 Ohm, Voice Range Speaker

Part #
RDC3WP-4
Built to Order
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The RDC3WP-4 is a compact voice range driver ready to drop into a variety of communications projects and systems that demand a durable waterproof sound solution.

  • Voice range speaker
  • 3” (77 mm) basket diameter
  • 4 watts, 4 ohms, 87 dB SPL
  • 0.6" copper voice coil, aluminum former
  • Ferrite magnet, stamped steel basket
  • Acrylic treated cloth cone & surround

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More Information
Height (Inch) 1.1000
Width (Inch) 3.0000
Length (Inch) 3.0000
Speaker Type Voice
Shape of Speaker Square
Size, Nominal (inch & mm) 3" (77 mm)
Environment Outdoor
Application Voice Communications
RoHS Compliant Yes
Rated Impedance (Ω) 4
Rated Power IEC268-5 (W) 4 Watts
Program Power (W) 8
Sensitivity (dB SPL) ¹ 87
Frequency Range (Hz) 250 - 7,000
DC Resistance (Re) (Ω) 4
Resonant Frequency (Fs) (Hz) 291
Nominal Impedance (Z) (Ω) 4
Total Q Factor (Qts) 1.33
Basket Type Stamped steel
Terminal Size (mm) 4.7 x 0.5
Voice Coil Diameter (mm) 14.53
Voice Coil Wire Material Copper
Voice Coil Former Material Aluminum
Magnet Material Ferrite
Magnet Weight (gm) 68.04
Cone Body Material Acrylic treated cloth
Cone Surround Material Acrylic treated cloth
Spider Material Cotton
Dust Cap Material Felt
Net Weight (kg) 0.21
Technical Notes

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