4-Ohm Single Voice Coil 10 Loaded Subwoofer EnclosurePower handlingPeak: 1100 wattsRMS: 250 wattsPassive (non-amplified) design provides system flexibilityVoice Coil Cooling System (VCCS)Extended magnet pole for improved linearityMagnet weight: 29ozDimensions: 17-5/8W x 9-1/4D x 13-1/2H