My HT consists of the following....

Denon 1804 receiver
Paradigm CC-170 center channel
Paradigm Titans fronts
Paradigm Atoms rear
SVS 20-39PCi sub
older model Pioneer DVD player

It seems that I can't find a good adjustment for the tone that sounds good on every DVD. I am constantly adjusting tone for every DVD I watch. Sometimes the sound is too bright and sometimes it is muffled. Once tone changes are made it is pretty awesome. Is this common and something I'll just have to deal with or is there something I can do? I have calibrated the system with a SPL meter and calibration disk.