Lanzar DCTOA8D Distinct Open Air DVC Distinct Series 8-Inch High Power IB Open Free-Air 4 Ohm Subwoofer DVC, Set of 1 8" High Power Open Air 4 Ohm Woofer - DVC: Dual Voice Coil - 30 OZ. Barium Ferrite Magnet Dual 1.5" (35mm) High Temperature Aluminum Voice Coils - Stamped Steel Basket Power Handing: 80 Watts RMS/160 Watts Peak - Frequency Response: 41-3kHz Black Pressed Paper Cone with Reinforced Foam Surround - Sensitivity: 872dB (1w/1m) Mounting Depth: 4.06" - Overall Diameter: 8.31" - Cutout Diameter: 7.01"