Rockville RG212CA Dual 12" Powered Subwoofer vs 10" 800W Under Seat Car Subwoofer

The Rockville RG212CA is the bigger, louder system: dual 12-inch subs, a 500W RMS Class D amp and a braced ¾-inch MDF vented box tuned to 40Hz. The 10-inch under-seat package is far smaller and lighter, with roughly 220W RMS, and fits where the Rockville cannot. Buy the Rockville if you want real output and have room for a wide, shallow enclosure. Buy the under-seat unit if space is the constraint and you want a modest bass lift. Owners of slim powered enclosures like the Rockville report solid output for the size but note the vinyl finish and the need for a proper 8-gauge install.

• Choose the Rockville RG212CA if you have a wide, shallow cargo or hatch space and want genuine sub-bass output from a complete amp-and-enclosure package.
• Choose the 10-inch under-seat package if you have no room for a box and want a compact, light bass addition that hides under a seat.