I recently purchased an onkyo ht-s650 and have been using it for about a week now and everything is great except for the low end. Explosions and other stuff along those lines seem muffled they are not as bright and big as I thought the would be. I believe the problem may be with how it's setup, but I don't know where to start. Right now I'm using the sub cable that came with the htib, which is pretty thin. Would it help if I got a Monster Bass Cable? Any information you guys can give would be appreciated. Thank You. And no I don't have the lfe problem commonly associtated with the ht-r500.