On my gaming PC, I have a 5.1 speaker setup, four Micca MB42x:
http://noaudiophile.com/Micca_MB42x_Bookshelf_Speakers/
and a Micca MB42x-C center channel as well as a powered Energy subwoofer (8" downfiring, flared front port, has both sub and speaker-level inputs). Sound source is a Creative...