(2) RE Audio SEX10D4 V2 10" Dual 4-Ohm Car Subwoofers Totaling 1500 Watt RMS With Redesigned Look and Improved Efficiency RE Audio SEX10D4 V2 10" 750W RMS Dual 4-Ohm Car Subwoofer SEXV2 Sub SEX V2 10D4. Power Handling: 750 Watts RMS. Dual Composite 2-piece Cone. Rubatek Foam Surround. Cast Aluminum Basket. Tork-Tite Terminal. 3 4-layer Aluminum Voice Coil. FEA-optimized Motor Structure. Double-stack Magnets. Progressive Spiders. Wrap-around Rubber Gasket. Impedance: Dual 4 Ohm. Top-mount depth: 5.5. Diameter: 11". Enclosure Recommendations. Sealed (Compact), cubic ft/liters: 0.4/11.33. Sealed (Optimal), cubic ft/liters: 65/18.41. Ported (Compact), liters/cubic ft: 1/28.32. Ported (Optimal), liters/cubic ft: 1.25/35.4.