Building on the success of the original Everse 8 the Everse 12 offers better sound more output and greater coverage. Electro-Voice loaded this battery-powered PA speaker with a 12-inch woofer to handle the lows and a 1-inch compression driver for the highs. The drivers together with the patented SST (Signal Synchronized Transducers) port design supply a crisp clear tone regardless of how hard you push the master volume.