Im calibrating my sub with the BFD and everything is going good until I tested the satalites and center with the sub. I have test tones 20 - 125Hz. My sub sharply dips from about 90Hz up with a total diff. of about 15dB. My sats and center play down to 56Hz and looks like a roller coaster when graphed. From 100-125hz there is a huge spike in contrast to the subs dip. My center is in an entertainment center in a cubby above the tv which is roughly 8"x20"x20". I have a 14'x18'x8'room with an opening in one wall and an entrance to a kitchen and hallway. The sub is corner loaded. I stuff pillows behind the center and it helped some and moving it is not an option. The sats are also in cubbies. I have taken many measurements and Im getting very disheartened. I have pretty flat response from 20-90hz and was hoping to do the 400hz house curve trick tonight! I can smooth it out quite a bit in that upper range by boosting the subs input by 5-10dB but then Im out of headroom for when I get a house curve and raise the level again. My subs volume control is 4/5 the way up to. I dont know how to approach this delima! On top of this Im confused about this; Im playing the tones on my dvd player. I cant use a true surround channel because of the cd. Im using pro logic 2 movie. Ive noticed only the center plays these freq. in this mode. In P.L. 2 music they play them along with the center. I also use 3 stereo from time to time with stereo sources.Are there dif. crossover points for diff. sources? This all seems so complicated! HELP!