Here is my setup:
HK 525 (Receiver)
M22ti's (fronts) 2db
VP 150 (Center) -4db
QS8's (Surrounds) 1db
SVS 20-39 PCI (Sub) -5db

Like Gem said, I have all my crossover set at 80Hz. All speakers set to small. You really need a Sound Level Meter (Radio Shack sells them under $40) for a proper calibration. Once you calibrated with a sound meter the difference is like night and day, atleast in my case. Good luck.