Thanks for the response guys. I also didn't mention that I have a Trinity sub.
I will try some of the suggestions of turning up the input to the centers, as well as placing them vertically. However, I don't know anything about crossovers. What do you suggest I try. Again, BP7001 for fronts, BPVX for back and surroungs, and two CLR-3000 centers. I currently have a Denon receiver preamped out to two 5-channel amps. This allows me to bi-amp the fronts and give power to both centers, my backs, and surrounds (all 10 channels are used). I love the versibility of Def Tech! But, I am ignorant to the use of crossovers. Do I need to by one, or is there one built in somewhere? Any suggestions of things to try to improve the sound would be appreciated.