Cadence Acoustics S0-Series S0W12-S2, 12� 500 Watt 2 Ohm SVC SQ Subwoofer Series: S0 Series Type: Subwoofers Cone Material: Pulp Composite Cone – SQ Style Woofer Surround Material: High Roll Double Laminated Foam Surround Voice Coil: Single Voice Coil Construction: High Temperature Aluminum Voice Coil Former Damper (Spider): Linear Progressive Conex Spiders Magnet Construction: Ultra Saturated, High “BL� Magnetic Motor Gap