Roswell marine subwoofers are available in 10" and 12" sizes. R1 boat subwoofers are built with marine-grade materials and perform in sealed, ported and infinite baffle configurations, with a built-in RGB LED backlit grille. RMA 10" and 12" marine subwoofers offer a value option for smaller systems and upgrades. Complete your install with a Roswell 10" or 12" subwoofer enclosure and a mono R1 or R1 Pro marine amplifier for full bass output.