Davey, to be frank you're not in general supposed to hear "distinct sounds" in the surrounds or "boom" in the bass. It's your money, of course, so adjust the levels to suit your taste, but many listeners tend to set the levels of both their sub and their surrounds too high because they want to "hear" them. Wrong. The sub isn't supposed to be heard as a separate source, but rather to give the impression that it's not working but the other speakers are putting out more bass. Often there's nothing but subtle ambience effects happening in the surrounds. I'm not there, of course, but I strongly suspect that the settings YPAO reached are pretty accurate and should be trusted. I'm reminded of a post I read on another audio forum about a week ago in which the poster actually said that the YPAO was "inaccurate" in setting the bass level because he had to turn the sub way up to hear it. Unfortunately we can't "just trust our ears".
