Ok, I don't have an SPL meter. Is there a "ballpark" figure for where the Sub's DBL needs to be in regards to the other speakers?
For example, with my Energy S10.3's volume 1/2 way, the YPAO auto setup set my mains and surrounds at 1.5+DBL and my sub at -2.0DBL. It didn't seem to have much impact on bass, so I brought it up to +4.0DBL. Now it kicks for movies, music etc... Is this normal or am I running it too hot? Xover is 80hz.
It is very normal for people to like more bass than is recorded on movie soundtracks, and more bass than is recorded on CDs. Most likely, the YPAO auto setup set the levels fairly accurately, and you simply like excessive bass. This, of course, will be particularly common when one listens at low volumes, as human hearing is not linear, and when one turns down the volume, bass subjectively appears to diminish faster than midrange. This is why old two channel receivers typically had "loudness compensation" circuitry that could be engaged for listening at low volumes.
Additionally, if you don't have a great subwoofer, you will have less bass at very low frequencies than is recorded on some soundtracks and some CDs, and consequently one may be tempted to turn up the subwoofer higher to compensate for this. However, doing so overemphasizes upper bass, so one will not get accurate reproduction of the sound that way.