Car Audio & Video. Rockville RBG15FA 15 2400 Watt Active Subwoofer With Folded Horn Design. Condition: BRAND NEW IN ORIGINAL PACKAGING. Ultra-efficient, Earthshaking Folded-Horn Powered Subwoofer. What the hell is a Folded-Horn Subwoofer anyway? Folded-Horn Reflex Technology Explained: Any “horn” shape, which gradually expands from a small inlet to a large opening, will act as […]... Read More