... ,100 OZ Magnet 220*110*20"Sensitivity:96dbImpedance: 8 OhmPower:400 Watt RMSDWF515515" Woofer,Alu basket4" VC,100OZ Magnet 220*110*20 ... "Sensitivity:97dbImpendence: 8 OhmPower:450 Watt RMSDWF518518" Woofer,Alu basket4" VC,100OZ Magnet 220*110*20 ...