Mackie Thump15A 15" 2-Way Active Speaker 1300WWhen you need a broad frequency spectrum with powerful lows to pump up grooves, the Thump15A with 1300 watts of power and a high output 15" woofer and 1. 4" titanium dome tweeter is the best sonic tool for the gig. It's called "Thump" for a reason; it's amplifier design with Dynamic Bass Response delivers low frequencies that will pound into your chest. The built in 2 channel mixer boasts two Vita preamps, Wide Z mic line jacks, and four speaker modes