Thanks Bruce, Wayne, thewire, JohnM (for the creation of REW) and several others.
I completed measuring and EQing my sub and front three channels and it sounds amazing. (I'll tackle the surrounds tomorrow.)
Cleaning up the sub's response made the biggest improvement, but I also had a nasty peak at 100Hz in the right speaker because I can't get it quite far enough away from the wall.
Now that the bass is in check, everything sounds balanced and even the mids and highs sound more in focus.
:T :yay: :T