Polk Audio DB842SVC - 8" 750W

Rich Deep Bass, On the Go Delivers thunderous sonic output and powerful low frequency response whenever... that will get your heart pumping. Marine Certified Built to last for cars, boats and ATVs with an IP56 rating and tested for Salt-fog, UV & Humidity. Space Saving Design Slimmed down form factor reduces the need for oversized subwoofer enclosures for a look that goes virtually unnoticed-but a sound that doesn't. Dynamic Balance Technology Patented process that guides material selection through rigorous testing that identifies and cancels out unwanted resonant frequencies.  Features: Polk Audio DB842SVC 8" 750 Watt Single 4-Ohm Car/Marine Boat Audio Subwoofer Sub Driver Compliment: 8" (203.2mm) Cutout Dimensions: 7.28" (185mm) Mounting Height: 0.51" (13.05mm) Mounting Depth (Top): 3.82" (97mm) Mounting Depth (Bottom): 4" 102mm Peak Power Handling: 750 Watts Continuous Power Handling: 250 Watts Nominal Impedance: 4 Ohms Frequency Response: 30Hz-200kHz Sensitivity: 84 dB Magnet Weight: 24.7 oz Magnet Material: Ceramic Magnet Size: 110mm x 45mm x 18mm VC Diameter: 1.5" Minimum Sealed Enclosure: 0.5 cu. ft. Maximum Sealed Enclosure: 1.2 cu. ft. Minimum Vented Enclosure: 0.66 cu. ft. Maximum Vented Enclosure: 1.2 cu. ft.