SPECIFICATION : 

Throat Size 2" , 50.8mm
Nominal Impedance* 8© 
Minimum Impedance 7.1 ohm @ 3.4 kHz © 
Power Rating* * 100 W ( AES) 
Resonance 0.47kHz
Usable Frequency Range 800Hz-20kHz
Recommended Crossover 800 Hz / 12 dBkHz
Sensitivity* * * 108.8
Magnet Material Ferrite
Magnet Weight 80oz, 2.27kg
Voice Coil Diameter 3" / 76mm
Voice Coil Former Polyimide
Diaphragm Material Titanium w/ geodesic ribs for increased stiffness and break-up control.
DC Resistance ( Re) 4.8© 

MOUNTING INFORMATION : 

Overall Diameter 7.9" , 200.7mm
Driver Volume Displaced 0.048 cu.ft., 1.36 liters
Depth 3.1" , 78.7mm
Weight 13.5 lbs, 6.1 kg
Mounting Thread N/ A
Mounting Holes Diameter 4X 1/ 4-20
Mounting Holes B.C.D. 4 in. 101.6 mm.