The 10-inch L7R Square Sub moves more air and delivers bigger bass than circular subs, so you get more bump out of every watt! It's simple - more cone means more air moves.KICKER's L7R Square Sub technology gives you up to 20% more cone area than a round sub. Full 360-degree back bracing keeps the entire cone strong and stable for smooth, distortion-free bass. The L7R's powerful motor delivers big bass, while utilizing next-level thermal management for optimal performance. The UniPlateT solid pole piece & backplate construction ensure the sub stays cool, even under extreme power loads.