Rockville RVB8.1A Powered Subwoofer vs Rockville RG212CA Dual 12" Powered Subwoofer

Buy the RVB8.1A if you want bass that fits in a small trunk, hatch or truck cab and you value easy install. Buy the RG212CA if you have the room and want far more output and headroom. The RVB8.1A is a single 8-inch powered box with a Class AB amp rated 200W RMS; the RG212CA is a dual 12-inch slim vented box with a Class D amp rated 500W RMS and 2-ohm stable. Owners of the smaller unit praise its deep bass for the size and simple wiring; the larger one is heavier and needs more space, so measure first.

• Choose the Rockville RVB8.1A if space is tight, you want a compact all-in-one sub with a dash bass knob, and 200W RMS is enough for your cabin.
• Choose the Rockville RG212CA if you have room for a wide slim box and want much more output, a Class D amp and dual 12-inch drivers.