I've re watched Transformers since my sub's arrival and didn't notice anything, however I don't have it on BR. FWIW I'm running my sub just under half gain with my receivers level at 0 dbs and volume @ -(5/10)dbs and able to reach significant SPL's without a problem. You really need to get a SPL and calibrate your set up.
Heh.. I was watching some Nascar the other day and my wife was in the kitchen when she entered the living room to ask me if I heard some thunder, I just smiled and said NO.