10"/12"Subwoofer 88 OZ Magnet 2.5"Voice Coil Single 4 Ohm WA250-150E 10"Subwoofer,88 OZ Magnet,2.5"Voice Coil ... Aluminium basket white fiber glass cone with rubber surroundWA300-150E12"Subwoofer,88 OZ Magnet,2.5"Voice Coil,Single 4 OhmMax ... Aluminium basket white fiber glass cone with rubber surround 10"/12"Subwoofer