Wet Sounds REVO 10 HP S4-B V2 | Wet Sounds 10" High Power Marine SubwooferHigh Power REVO subs are recommended for applications where there is adequate room for a specifically designed sealed or ported subwoofer enclosure. Full specifications to design enclosures for REVO HP Subs are available here. Both 10 & 12 REVO HP Subs are available in Black frames (with metallic grey cones) & single 4 Ohm impedance. Features include: Nylas Composite Frame to withstand extreme environmental use. Designed to accept optional RGB wiring.