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Model #31RN12-4

31RN12-4
Key Features:
  • 1.2" (31 mm) 12 ohm Full Range 1 watt Neodymium magnet aluminum black anodized cone with polyether foam surround .110" terminal RoHS Compliant.

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Product Specifications & Parameters

Primary Specficiations

 
Speakers EnvironmentIndoor
ROHS CompliantYes

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 1.2 / 31.0 inch / mm
Rated Impedance12 ohms
Rated Power1.0 Watts
Program Power2 Watts
Frequency Range250 - 20000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)		80dB SPL
Voice Coil Diameter0.7 / 17.8inch / mm
Magnet Weight0.29 / 8.0oz / gr

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo)250Hz
D.C. Resistance (Re)12.1ohms
Mechanical Q (Qms)4.7
Electrical Q (Qes)0.85
Total Q (Qts)0.72
Compliance Equivalent Volume (Vas) 0.27 ltr
BL Product (BL) T-M
Maximum Linear Excursion (Xmax) mm
Surface Area of Cone (Sd) cm2

Material Descriptions

 
BasketStamped Steel
Terminal Size
MagnetNeodymium
Voice Coil WireCopper
Voice Coil Form
ConeAluminum Black Anodized
Cone EdgePolyether Foam
Dust Cap

Drawing

ID Description MeasurementsTolerance
OD Outside Diameter +/- 0.020”
CD Cutout Diameter +/- 0.020”
MG Magnet Diameter +/- 0.050”
HD Hole Diameter +/- 0.010”
MD Mounting Diameter +/- 0.010”
ID Internal Depth +/- 0.025”
FT Flange Thickness +/- 0.050”
NW Net Weight
neodymium

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