Originally Posted by RUR
For music recordings, there's no probably about it.
Agreed, but the OP also stated "But It just seems like now I'm missing something."
If he's been listening to various recordings, then your graph proves (by law of averages) that sometimes he should have GAINED something.
I think the OP is experiencing what many others have noticed, and that is when subs are EQ'd for "flat" measured frequency response, the subjective effect is that "the bass sounds weak now".
Now I'm sure that equal loudness curves could have something to do with that, but most who read this forum not only like their bass, but they like to reproduce it loud when called upon. EL curves shouldn't really play a part of weak sounding bass when the levels are high, and yet some find the sound is still not balanced at those levels.
I've experienced the same effect but was astounded to read that there are others in this forum who state that they actually prefer a measured flat response, or even a reduction
in bass output to make sounds seem natural!
I'm curious, is there anyone out there who had a system that measured flat and thought it sounded weak in the bass department, but has since upgraded to a receiver that has Audyssey Dynamic EQ function engaged and finds the bass to sound balanced now?