FWIW, I spent the last six days exploring a "house curve." Recently, with the addition of XT32, I have been able to get an excellent flat graph but playing the volume at +/-dBfs was just too much for the wife and even a bit to loud for my needs. Hence the need for the house curve to adjust for this conundrum. I tested the house curve on her today and it was met with smiles and approval. Sounds better than a paid for movie theater.
Each of two subs are bumped +10dB over flat.
The center channel is bumped +6dB over flat.
The mains and surrounds are left at their initial flat settings.
MVC is held back to -17.5dBfs.
One sub is nearfield, three feet from the MLP and the second sub is on the equipment wall, ten feet from the MLP. Very nice.
When watching cable provided programming, the system is dialed back to each sub being bumped +3dB over flat and the center channel is bumped +3dB over flat. All other speakers have no level changes made and the MVC is usually set in the -40dBfs to -30dBfs range.