"I have my equipment in my basement and I have not really noticed this issue before but as I change equipment I seem to be listening to my music louder. I have no idea how much louder but maybe 30%. I have never listened to my music really loud. But it seems that if I turn the music down I the intensity goes down more than just what the volume goes down."
There are so many different areas that you can explore given the type of problem you have. The above quote stands out, though. I find that the happier you are with your system, you tend not to play it as loudly. Increased volume suggests that you may be missing something and you compensate by turning it up. Maybe something is wrong with the equipment or you just don't like the way it sounds. No idea if that is your problem, its just something to consider.
A couple of other things that come to mind is to check your speakers and make sure all the screws are tight. Its a very common problem to have them work loose over time. Also, move your system to another room and try it. Its a pain but it can answer a lot of questions as to weather its a room acoustic problem or not.
