Add serious low end to your gig with the Rockville bass gig rbg-18s powered subwoofer. This is an incredible sounding powered sub that features a 18" driver with up to 2000-watts of peak power for tremendous bass that can run all Night without stopping. The subwoofer features a high temperature 4-layer 4” voice coil and is set in a 120oz magnet motor structure. The amplifier features an internal heat sink with a heat sensitive, variable speed, Auto turn-on fan cooling system, so even when your music gets hot ‐ your amp will stay cool.