Skar Audio ZVX-8 D2 8" 900 Watt Dual 2 Ohm SPL Car Subwoofer 8-inch Dual 2 Ohm SPL Car Subwoofer Peak Power: 1,100 Watts | RMS Power: 900 Watts Competition Grade Pressed Paper Cone with Stitched High Roll Foam Surround Massive Triple Stack Magnet | 2.5" Voice Coil Sensitivity: 80.4 dB | Fs: 41.8 Hz