OC12WF-4A
Key Features:
  • 12" (304mm), 4 ohm
  • Woofer, 100 watts
  • Ferrite magnet, black talc filled polypropylene cone with polyether foam surround;

Primary Specifications

Speakers Environment Indoor
ROHS Compliant No

Technical Specifications

UNIT of MEASURE
Nominal Basket Diameter 12.0 / 304.0 inch / mm
Rated Impedance 4 ohms
Rated Power 100.0 Watts
Program Power 200 Watts
Frequency Range 20 - 1000 Hz
Sensitivity
(2.83 V input measured at 1 Meter)
91 dB SPL
Voice Coil Diameter 2.0 / 50.8 inch / mm
Magnet Weight 40.0 / 1136 oz / gr
Transformer

Small Signal Parameters

UNIT of MEASURE
Resonant Frequency (fo) 33 Hz
D.C. Resistance (Re) 3.7 ohms
Mechanical Q (Qms) 7.9
Electrical Q (Qes) 0.5
Total Q (Qts) 0.47
Compliance Equivalent Volume (Vas) 156.7 ltr
BL Product (BL) 9.6 T-M
Maximum Linear Excursion (Xmax) 5.8 mm
Surface Area of Cone (Sd) 539.0 cm2
Moving Mass (Mmd) g

Material Descriptions

 
Basket Stamped Steel
Terminal Size 0.205 X 0.02
Magnet Ferrite
Voice Coil Wire Copper
Voice Coil Form Kapton
Cone Black Talc Filled Polypropylene
Cone Edge Polyether Foam
Dust Cap Plastic
http://s3.amazonaws.com/misco/curves/OC12WF-4A.JPG
ID Description Measurements Tolerance
OD Outside Diameter 12.2 in. +/- 0.040”
CD Cutout Diameter 11.1 in. +/- 0.030”
MG Magnet Diameter 5.3 in. +/- 0.050”
HD Hole Diameter 0.3 in. +/- 0.020”
MD Mounting Diameter 11.3 in. +/- 0.020”
ID Internal Depth 5.3 in. Maximum
FT Flange Thickness 0.23 in. +/- 0.050”
NW Net Weight 3858.0 g
ceramic