Nominal Basket Diameter 18" 460mm
Nominal Impedance 8 ohm
Nominal Power Handing (AES) 1200W
Continuous Power Handing 2400W
Resonance 35HZ
Usable Frequency Range 35HZ-1KHZ
Sensitivity 97 dB
Magnet Weight 126 oz
Voice coil (TIL) 4" 99.2mm
THIELE&SMALL PARAMETERS 
Resonant Frequency fs 35HZ
DC Resistance Re 5.1 ohm
Mechanical Q Qms 8.63
Electromagnetic Q Qes 0.41
Total Q Qts 0.39
Compliance Equivalent Volume VAS 217.8 Ltr
Mechanical Compliance of Suspension (Cms) 0.11mm/N
BL Product BL 22.5  T-M
Diaphragm Mass Inc.Airload Mms 203 grams
MOUNTING INFORMATION 
Overall Diameter 460mm
Baffle Hole Diameter 423mm
Mounting Holes Diameter 7mm
Mounting Holes P.C.D 440mm
Depth 209mm
Net Weight 12.02 kg
Shipping Weight 14.02 kg
Packing Size: 485x485x495mm (2PCS)
20”/480pcs  40”/1000pcs  40”H/1170pcs