Package Includes: (2) Rockville W8K6D2 V2 8" 1400w Peak Car Stereo Subwoofer Dual 2-Ohm Sub 350w RMS Features: Rockville K6 Series 8" Dual 2-Ohm Car Subwoofer Peak Power Handling: 1400 Watts Program Power Handling: 700 Watts RMS Power Handling: 350 Watts 2" 4-Layer voice coils (Black Aluminum Former Wound with 100% OFC Copper Wire) Double Stacked 70 Oz Magnet Cast Aluminum Basket With Black Sanded Finish Two Chrome-Plated Binding Post Terminals Black Non-Pressed Paper Cone Ultra-Stiff cone is extremely thick and strong Thick Foam Surround Provides Incredible Sound Quality With Minimal Distortion Black stitching reinforces the cone and ensures long life Polypropylene (PP) Dustcap Impedance: Dual 4-Ohm Voice Coils Vented Holes on T-yoke Enhances Heat Dissipation Custom Rubber Boot Magnet Cover Custom Rockville Mounting Gasket makes it Easy To Mount the Subwoofer Air-Tight High BL Magnetic Motor Gap 2 layer spider made with thick gauge material that is resistant to tearing Cutout Diameter: 7.5" inches Mounting Depth: 4.13" inches Frequency Response: 44Hz - 1.5kHz 6mm T-Yoke + 6mm Washer Sensitivity: 83.4dB Sealed Enclosure Volume: 0.21-0.6 Cubic Feet Vented/Ported Enclosure Volume: 0.35-1.0 Cubic Feet 1-Way XMAX: 15 MM Weight: 8.82 Lbs. Shipping Weight: 11.5 Lbs. Shipping Box Dimensions: 11.41" x 11.41" x 11.81"