Definitive Technology SR-8040BP Speaker System - Sold Individually... The perfect surround speaker for BP SuperTower® series front speakers Bipolar dispersion pattern (speakers on front and back) for totally enveloping surround sound that puts you in the action The same highest quality components as Definitive’s front channel speakers for seamless channel to channel transition Two 3-1/2 inch die cast basket patented BDSS drivers and two 1 inch pure aluminum dome tweeters Easy wall mount system included The SR-8040HD is built to the same high performance standards as Definitive’s main left and right front speakers and includes features like high-definition second generation patented BDSS bass/midrange drivers with butyl rubber surrounds wide-dispersion pure aluminum dome tweeters complex crossover networks and rock-solid cabinet construction. It can be mounted to a wall with the integrated keyhole plate or placed on a shelf or stand. However you use the SR-8040BP you’ll enjoy superior surround sound realism.
