PYLE PLD15WD 15-Inch 4000 Watt DVC woofer Custom Titanium Moulded Poly Cone - 2.5'' 4 Layer Dual Voice Coil - Nominal Impedance: Dual 4 Ohms Custom Grooved Specially Treated Rubber Surround - Moulded Plastic Gasket - Fs:20, Qms:5.03, Qes:0.89, Qts:0.66, Vas (Cu ft)8.689 Diamond Cut Aluminum Die-Cast Basket - Spring Loaded Wire Connectors - SPL: 92 dB Dual Stacked Magnet Structure - 4000 Watts Peak Power - Overall Diameter: 16'' Chrome Mesh Magnet Vent - Magnet Weight: 2 x 100 oz. - Mounting Depth: 6.40''