Big Speaker Sound Without The Big Speaker Whether you"re looking for your first home theater sub/sat system or want to upgrade to more performance, you"re in for a big surprise in a small, compact package from Polk Audio. Everything you need for explosive surround sound home theater thrills (except the subwoofer). The 5-piece system includes a center channel speaker, front speakers and surround speakers. Add the sub that’s right for you, like a PSW125 or PSW10, and get blown away by movie and gaming thrills.