Nominal Basket Diameter 12" 305mm
Nominal Impedance 8 ohm
Nominal Power Handing (AES) 450W
Continuous Power Handing 900W
Resonance 43HZ
Usable Frequency Range 43HZ-2KHZ
Sensitivity 97 dB
Magnet Weight 67 oz
Voice coil (TIL) 3" 75.5mm
THIELE&SMALL PARAMETERS 
Resonant Frequency fs 43HZ
DC Resistance Re 5 ohm
Mechanical Q Qms 6.3
Electromagnetic Q Qes 0.29
Total Q Qts 0.28
Compliance Equivalent Volume VAS 98.2 Ltr
Mechanical Compliance of Suspension (Cms) 0.24mm/N
BL Product BL 16.5  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 143mm
Net Weight 7.5 kg
Shipping Weight 8.5 kg
Packing Size: 345x345x365mm (2PCS)
20”/1290pcs  40”/2670pcs  40”H/3130pcs