2,000-watt Powered Subwoofer with 12" LF Driver, Variable Crossover, Signal Overload Protection, Pole Mount, and Alignment Delay. You can rely on the Mackie DLM12S powered subwoofer for thumping, powerful bass much more than you'd expect from its compact size. That's because the DLM12S boasts 2,000 watts of Class D amplification, powering a custom-designed 12" woofer with 3" voice coil. And you'll get a great sound fast because the DLM12S has presets specifically for use with Mackie DLM and SRM Series loudspeakers. But with a variable digital crossover, it's easy to match with virtually any system too.