Nominal Basket Diameter 12"  300mm
Nominal Impedance 8 ohm
Nominal Power Handing (AES) 450W
Continuous Power Handing 900W
Resonance 40HZ
Usable Frequency Range 40HZ-2KHZ
Sensitivity 97 dB
Magnet Weight  67 oz
Voice coil (TIL) 3" 75.5mm
THIELE&SMALL PARAMETERS 
Resonant Frequency fs 40HZ
DC Resistance Re 5 ohm
Mechanical Q Qms 6.5
Electromagnetic Q Qes 0.28
Total Q Qts 0.26
Compliance Equivalent Volume VAS 116.7 Ltr
Mechanical Compliance of Suspension (Cms) 0.25mm/N
BL Product BL 16.2  T-M
Diaphragm Mass Inc.Airload Mms 56 grams
MOUNTING INFORMATION 
Overall Diameter 320mm
Baffle Hole Diameter 282mm
Mounting Holes Diameter 7mm
Mounting Holes P.C.D 305mm
Depth 138mm
Net Weight 7.2 kg
Shipping Weight 8.2 kg