SSZ12D4 12" Subwoofer with dual 1ohm/2ohm voice coiL, 1250W RMS                           
Voice coil        75mm/3" flat wound aluminium VCRMS              1250W RMS / MAX power       2000W SPL              91dBCone              CarbonFiberImpedane      Dual 1 ohm / Dual 2ohmFrequency resp.   35-1.5khzMotor/Triple 220mm  370 ozMounting depth    170.5mmXMAX    30mmQts    0.38Vas    23.0 liter