Nominal Basket Diameter 12" 305mm
Nominal Impedance 8 ohm
Nominal Power Handling (AES) 250W
Continuous Power Handling 500W
Resonance 49HZ
Usable Frequency Range 49HZ-3KHZ
Sensitivity 94.5 dB
Magnet Weight NEODYMIUM
Voice coil (TIL) 3" 75.5mm
THIELE&SMALL PARAMETERS 
Resonant Frequency fs 49HZ
DC Resistance Re 5.4 ohm
Mechanical Q Qms 9
Electromagnetic Q Qes 0.48
Total Q Qts 0.45
Compliance Equivalent Volume VAS 60.93 Ltr
Mechanical Compliance of Suspension (Cms) 159.47um/N
BL Product BL 15  T-M
Diaphragm Mass Inc.Airload Mms 65 grams
MOUNTING INFORMATION 
Overall Diameter 317mm
Baffle Hole Diameter 287mm
Mounting Holes Diameter 7mm
Mounting Holes P.C.D 300mm
Depth 136mm
Net Weight 3.3kg
Shipping Weight 4kg
Packing Size: 675x345x330mm (4PCS)
20”/1460pcs  40”/3020pcs  40”H/3540pcs