Nominal power 80W Maximum power 160W Sensitivity 92.5dB Cone Polyglass Surround Butyl Nom. impedance 4 Ohms DC resistance 2.65 Ohms VC diameter 25mm VC height 11mm Former Kapton Layers 2 Wire Copper Inductance 0.15mH Xmax 3.25mm 01/8 in Magnet d x h 85 x 17mm 31/3 x 02/3 in Magnet weight 215g 0.47 Ib Flux densityGap height 5mm 03/16 in Net weight 1000g 2.20 Ib