Steakster, what volume levels are we talking about? Do you have access to a SPL meter? Also what is the size of your listening room and how far are you sitting from your speakers? Measured decibel levels at the speaker and at the listening position will give insight into whether it's a loudness curve issue or not, plus you should measure the background noise level of your listening room. It may be that the at soft listening levels you are knocking at the room's noise floor.