I'm not an audiophile. I just like good sound for movies & music. My system consists of Yamaha HTR 5850 Receiver, 6.1, Paradigm Titans (4) & Atoms (2) i.e. 3 Titans in front and 1 Titan and 2 Atoms in rear. It sounds great as it is. My wife keeps asking me why we even need a subwoofer when the bass sounds ok as it is. Will adding a sub really make that much difference? Thanks for your comments.