I was initially disapointed with the fact the bass guitar was curiously put out through the center channel, one that I was aware was designed more for the mid/treble sounds of voices and effects, and thus the bass was practically unaudable and light. I have however since found that my amp has an option of switching the various effects speakers (center in this case) between "small" and "large". It's a fairly big speaker so I had it set to "large". However on changing it to "small" all of a sudden the bass came roaring out of it and everything is perfect now. Does this make any sense to anyone? Needless to say i'll be leaving it like it is, and the suround mix is now sounding amazing.