Video of K5 Series UPDATED:Features: Rockville DV8K52 Dual 8" K5 1600w Car Subwoofers Pre-loaded In Vented Sub Enclosure Peak Power Handling: 1600 Watts Program Power Handling: 800 Watts CEA Rated RMS Power Handling: 400 Watts Final Impedance: 2 Ohm MDF enclosure Bonded stapled and braced Computer designed vents Angled at 15 % for perfect bass alignment High quality aviation grade tweed carpet Satin Nickel speaker wire push terminals Enclosure air space is 0.8 Cu Ft per sub Vent dimensions (inches): 2.5" x 6.75" x 9.75" Tuning frequency of enclosure: 44 Hz 1.5" 4-Layer Black Aluminum Voice Coils Wound with OFC (100% Copper) Wire The wire we use to wind the voice coil is imported from Japan which is way better quality than the standard China wire 30 Oz High Quality Magnet Cast Iron Basket With Black Sanded Finish Fiber Reinforced Ultra Stiff Black Non-Pressed Paper Cone This cone is very efficient which makes the speaker sound louder even without requiring a lot of power to push it Thick Foam Surround Provides Incredible Sound Quality With Minimal Distortion Blue Stitching Cone Reinforcement Ensures Long Life Polypropylene Dust cap Gold-Plated spring loaded push terminals Impedance: Single 4-Ohm Voice Coils Vented Hole on T-yoke Enhances Heat Dissipation Mounting Gasket with Rockville branding Makes it Easy To Mount the Subwoofer Air-Tight High BL Magnetic Motor Gap High grade black glue that handles extremely high temperatures which allows our woofer to handle even more power Cutout Diameter: 7.16 inches Mounting Depth: 3.54 inches Frequency Response: 44 Hz - 1.3K kHz 5mm T-Yoke + 5mm Washer Sensitivity: 85.7dB Weight: 37.7 Lbs. Dimensions of enclosure: 24.25x 14.75" x12" Shipping Weight: 43.1 Lbs. Shipping Box Dimensions: 25.4" x 16.1" x 14.1"Detailed Info of Subwoofer: Body: Non-Pressed Paper Gap Plate Inside Diameter: 60m