Actually acoustic panels are not always the first option if you are on a tight budget and the BFD is definitely not the last and/or least desirable method of calibration. It's hard to find and implement bass traps that will deal with sub 40Hz response, where the BFD can really be a great supplement.
Don't get me wrong, if you have the cash and the space, bass traps can be very useful, but it's definitely not
always the first option.
The first thing I would ask is are you using a cal file with the ECM8000? You can
use mine if you would like... it should work close enough for you.
Since you've boosted that low end... how is your sub reacting on the rather bass heavy movies like WOTW... any bottoming, strange sounds, etc.?
Have you experimented with the phase... 30, 60, 90, 120, 150, 180 degrees out of phase with measurements for each? Something to try anyway.
Is adding another sub a possibility?
Definitely a nice room...
