Nominal Basket Diameter 15" 380mm
Nominal Impedance 8 ohm
Nominal Power Handling (AES) 900W
Continuous Power Handling 1800W
Resonance 40HZ
Usable Frequency Range 40HZ-1.5KHZ
Sensitivity 96 dB
Magnet Weight NEODYMIUM
Voice coil (TIL) 4" 99.2mm
THIELE&SMALL PARAMETERS 
Resonant Frequency fs 40HZ
DC Resistance Re 5.1 ohm
Mechanical Q Qms 7.1
Electromagnetic Q Qes 0.36
Total Q Qts 0.34
Compliance Equivalent Volume VAS 110.58 Ltr
Mechanical Compliance of Suspension (Cms) 95.47um/N
BL Product BL 23  T-M
Diaphragm Mass Inc.Airload Mms 162 grams
MOUNTING INFORMATION 
Overall Diameter 393mm
Baffle Hole Diameter 355mm
Mounting Holes Diameter 7mm
Mounting Holes P.C.D 374mm
Depth 166mm
Net Weight 7.7kg
Shipping Weight 8.7kg
Packing Size: 420x420x415mm (2PCS)
20”/770pcs  40”/1590pcs  40”H/1860pcs