Nominal Basket Diameter 12" 305mm
Nominal Impedance 8 ohm
Nominal Power Handling (AES) 300W
Continuous Power Handling 600W
Resonance 45HZ
Usable Frequency Range 45HZ-2.5KHZ
Sensitivity 94.5 dB
Magnet Weight NEODYMIUM
Voice coil (TIL) 3" 75.5mm
THIELE&SMALL PARAMETERS 
Resonant Frequency fs 45HZ
DC Resistance Re 5.8 ohm
Mechanical Q Qms 9.51
Electromagnetic Q Qes 0.47
Total Q Qts 0.43
Compliance Equivalent Volume VAS 89.58 Ltr
Mechanical Compliance of Suspension (Cms) 169.47um/N
BL Product BL 17  T-M
Diaphragm Mass Inc.Airload Mms 68 grams
MOUNTING INFORMATION 
Overall Diameter 320mm
Baffle Hole Diameter 282mm
Mounting Holes Diameter 7mm
Mounting Holes P.C.D 302mm
Depth 136mm
Net Weight 4kg
Shipping Weight 4.6kg
Packing Size: 675x345x320mm (4PCS)
20”/1500pcs  40”/3100pcs  40”H/3640pcs