SPECIFICATION : 

Throat Size 1" , 25.4mm
Nominal Impedance* 8© 
Minimum Impedance 7.7 ohm @ 3.0 kHz © 
Power Rating* * 50 W ( EIA-426A) 
Resonance 0.59kHz
Usable Frequency Range 2500Hz-20kHz
Recommended Crossover 2.5 kHz / 18 dBkHz
Sensitivity* * * 104.4
Magnet Material Ferrite
Magnet Weight 12oz, 0.34kg
Voice Coil Diameter 1.3" / 33mm
Voice Coil Former Aluminum
Diaphragm Material Titanium
DC Resistance ( Re) 6.7© 

MOUNTING INFORMATION : 

Overall Diameter 3.5" , 88.9mm
Driver Volume Displaced 0.009 cu.ft., 0.26 liters
Depth 2.45" , 62.2mm
Weight 2 lbs, 0.9 kg
Mounting Thread 1 3/ 8 in. 18 ext.