Nominal Basket Diameter 18" 460mm
Nominal Impedance 8 ohm
Nominal Power Handing (AES) 800W
Continuous Power Handing 1600W
Resonance 35HZ
Usable Frequency Range 35HZ-2KHZ
Sensitivity 97 dB
Magnet Weight 112 oz
Voice coil (TIL) 4.5" 114mm
THIELE&SMALL PARAMETERS 
Resonant Frequency fs 35HZ
DC Resistance Re 5.1 ohm
Mechanical Q Qms 9.6
Electromagnetic Q Qes 0.32
Total Q Qts 0.31
Compliance Equivalent Volume VAS 258.01 Ltr
Mechanical Compliance of Suspension (Cms) 0.12mm/N
BL Product BL 23.2  T-M
Diaphragm Mass Inc.Airload Mms 148 grams
MOUNTING INFORMATION 
Overall Diameter 476mm
Baffle Hole Diameter 423mm
Mounting Holes Diameter 7mm
Mounting Holes P.C.D 450mm
Depth 223mm
Net Weight 14.2kg
Shipping Weight 16.2 kg
Packing Size: 500x500x275mm
20”/405pcs  40”/845pcs  40”H/990pcs