Nominal Basket Diameter 12" 320mm
Nominal Impedance  8 ohm
Nominal Power Handing (AES) 350W
Continuous Power Handing 700W
Resonance 52HZ
Usable Frequency Range 52HZ-2KHZ
Sensitivity 98 dB
Magnet Weight 67 oz
Voice coil (TIL) 3" 75.5mm
THIELE&SMALL PARAMETERS 
Resonant Frequency fs 52HZ
DC Resistance Re 5.2 ohm
Mechanical Q Qms 5.78
Electromagnetic Q Qes 0.27
Total Q Qts 0.26
Compliance Equivalent Volume VAS 73.4 Ltr
Mechanical Compliance of Suspension (Cms) 0.20mm/N
BL Product BL 17.8  T-M
Diaphragm Mass Inc.Airload Mms 52 grams
MOUNTING INFORMATION 
Overall Diameter 316mm
Baffle Hole Diameter 282mm
Mounting Holes Diameter 7mm
Mounting Holes P.C.D 296mm
Depth 136mm
Net Weight 6.5 kg
Shipping Weight 7.5 kg
Packing Size: 660x340x345mm (4PCS)
20”/1440pcs  40”/3000pcs  40”H/3520pcs