Specifications. Brand:FAITAL PRO; Model:8FE200; Nominal Diameter:8"; Nominal Impedance:4ohm; RMS Power:130 W; Peak Power (Watts):260 W; Sensitivity (dB):95 dB; Max Excursion(Xdam)(Xlim):10.4 mm; Max Linear Excursion (Xmax):4.62 mm; Usable Frequency Range (Hz):60-5k Hz; Surround Shape:Triple Roll; Basket / Frame Material:Steel; Spider Detail/Material:1x constant height waves; Voice Coil Diameter:1.46"; Voice Coil Former:Kapton; Voice Coil Wire Material:Aluminum; Voice Coil Winding Depth:11.9 mm ; Voice Coil Gap Height:8 mm ; Demodulating Ring:No; Magnet Material:Ferrite . Parameters. Compliance Equivalent Volume (Vas):0.47 Ft3; Total Q (Qts):0.44; Mechanical Q (Qms):8.7; Electromagnetic Q (Qes):0.47; Minimum Impedance (Zmin):3.6ohm; DC Resistance (Re):3 ohm; Mechanical Resistance (Rms):1.94 lbs/sec; Surface Area of Cone (Sd):29.61 in2; Voice Coil Inductance (Le):0.25 mH; Flux Density:1 T; BL Product(Bl):7 T-m; Moving Mass Of Diaphragm (Mmd):13.8 g; Moving Mass(MMs):15.3 g; Reference Efficiency (No):0.0142; Mechanical Compliance (Cms):0.26 mm/N; EBP:170 Hz; Driver Displacement:36.25 in3. Mounting and Shipping Information. Overall Diameter:8.24"; Baffle Hole Diameter:7.01"; Bolt Circle Diameter:7.75"; Flange and Gasket Thickness:0.31"; Depth:3.5"; Net Weight(lb):4.7