Nominal Basket Diameter 12" 305mm
Nominal Impedance 8 ohm
Nominal Power Handing (AES) 500W
Continuous Power Handing 1000W
Resonance 50HZ
Usable Frequency Range 50HZ-4500HZ
Sensitivity 96 dB
Magnet Weight 80 oz
Voice coil (TIL) 3" 76.2mm
THIELE&SMALL PARAMETERS 
Resonant Frequency fs 50HZ
DC Resistance Re 5.4 ohm
Mechanical Q Qms 7.56
Electromagnetic Q Qes 0.37
Total Q Qts 0.35
Compliance Equivalent Volume VAS 123 Ltr
Mechanical Compliance of Suspension (Cms) 329um/N
BL Product BL 17.1  T-M
Diaphragm Mass Inc.Airload Mms 60 grams
MOUNTING INFORMATION 
Overall Diameter 315mm
Baffle Hole Diameter 282mm
Mounting Holes Diameter 7mm
Mounting Holes P.C.D 294mm
Depth 158mm
Net Weight 7.6 kg
Shipping Weight 8.4 kg
Packing Size: 340x340x395mm (2PCS)
20”/1220pcs  40”/2540pcs  40”H/2980pcs