3 Inch (77 mm) Waterproof Voice Speaker, 4 Ohm

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Built to Order

The RDC3WP-4 is a compact voice range driver ready for use in a variety of communications projects and systems that require 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
Brand Name MISCO OEM
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) +/- 15% 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 (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) 0.21
Technical Notes

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