1.2" (31 mm) 12 Ohm, Wide Range Speaker

Brand Name
MISCO OEM
Part #
31RN12-3
Built to Order
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THIS IS A “BUILT TO ORDER” PRODUCT.

This bottle-cap sized driver makes wide range sound in compact enclosures. Its size and weight are ideal for speaker phones and smart devices. A black, anodized aluminum cone create clear sound without extra ringing. Increase your device’s electrical signal by wiring this speaker in a parallel set of three to decrease its electrical impedance to 4 ohms. This speaker puts powerful and versatile sound into the palm of your hand.

  • Wide range speaker
  • 1.2" (31 mm) basket diameter
  • 1 watt, 12 ohms, 78 dB SPL
  • 0.7" copper voice coil, paper former
  • Neodymium magnet, stamped steel basket
  • Anodized aluminum cone, polyether foam surround

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More Information
Brand Name MISCO OEM
Height (Inch) 0.6000
Width (Inch) 1.2000
Length (Inch) 1.2000
Speaker Type Wide Range Speaker
Shape of Speaker Round
Size, Nominal (inch & mm) 1.2" (31 mm)
Environment Indoor
Application Indoor, Smart Device
RoHS Compliant Yes
PRIMARY SPECIFICATIONS
Rated Impedance (Ω) 12
Rated Power IEC268-5 (W) 1 Watt
Program Power (W) 2
Sensitivity (dB SPL) ¹ 78
Frequency Range (Hz) 250 - 20,000
SMALL SIGNAL PARAMETERS
DC Resistance (Re) (Ω) 12.1
Resonant Frequency (Fs) (Hz) 250
Mechanical Q Factor (Qms) 4.7
Electrical Q Factor (Qes) 0.85
Total Q Factor (Qts) 0.74
MATERIAL DESCRIPTIONS
Basket Type Stamped Steel with Zinc Plating
Terminal Size (mm) 3.6 x 0.5
Voice Coil Diameter (mm) 17.8
Voice Coil Wire Material Copper
Voice Coil Former Material Paper
Magnet Material Neodymium
Magnet Weight (gm) 8.22
Cone Body Material Black anodized aluminum
Cone Surround Material Polyether foam
Dust Cap Material Aluminum
Net Weight (kg) 0.03
Technical Notes

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