MTX's JackHammer subwoofer: Billed as the subwoofer that “other woofers have nightmares about,” the MTX JackHammer is a 2-foot tall, 320-pound behemoth that makes you proud to be an American. This 22“ subwoofer handles 5,000 watts RMS (up to 10,000 watts peak), and features a 900-ounce (that's a little over 56 pounds, folks) magnet and a 6.5” voice coil. The JackHammer is set up for high SPL (Sound Pressure Level), but you can purchase an replacement cone assembly that allows you to switch quickly to Sound Quality performance (and you don't have to remove the speaker from its enclosure to make the switch). There was a constant crowd around this woofer throughout the show, jaws open, staring in awe as the woofer cone moved in and out. Sometimes excess is a good thing!