Nominal Basket Diameter 18"  460mm
Nominal Impedance 8 ohm
Nominal Power Handling(AES) 450W
Continuous Power Handling 900W
Resonance 29HZ
Usable Frequency Range 29HZ-3KHZ
Sensitivity 96 dB
Magnet Weight 80 oz
Voice coil (TIL) 3" 75.5mm
THIELE&SMALL PARAMETERS 
Resonant Frequency                   fs 29HZ
DC Resistance                        Re 5.7ohm
Mechanical Q                         Qms 10.965
Electromagnetic Q                    Qes 0.462
Total Q                              Qts 0.443
Compliance Equivalent Volume         VAS 371.184 Ltr
Mechanical Compliance of Suspension (Cms)  189.011uM/N
BL Product                           BL 17T-M
Diaphragm Mass Lnc.Airload           Mms 163.4grams
MOUNTING INFORMATION 
Overall Diameter           460mm
Baffle Hole Diameter     422mm
Mounting Holes Diameter   7mm
Mounting Holes P.C.D     445mm
Depth     192mm
Net Weight 7kg
Shipping Weight 9kg
Packing Size: 485x485x475mm (2PCS)
20”/500pcs  40”/1040pcs  40”H/1220pcs