Mackie THUMP215 1400W Powered Loudspeaker - 15"Big bang for your bucks Mackie's Thump 215 powered speaker offers serious performance with a reasonable price tag. The Thump 215 uses a 2 channel 1400 watt amplifier to power its 15" woofer and 1" horn loaded tweeter. Built in time alignment and crossover circuitry result in maximum performance from the two drivers. To make sure the show will go on, Mackie incorporates thermal and power protection circuits so the drivers can't get pushed too hard.