JZ5

I recently added the SC-1 to my system. I've been without a center for some time now, so I'm used to all sound coming from the two front mains (KSF 8.5s). My question is, now that I have a center, the sound is not nearly as full as it was before. Sure, I can hear the dialogue much better, but the sound now lacks the fullness or depth it had before. I'm looking for suggestions on speaker levels, placement etc... Sounds kind of strange, but I think my system sounded better without the center. Suggestions..coments..?? sytem: Denon AVR 2801 Fronts KLF 8.5s Rears KLF 8.5s Center SC-1 TV Sony Wega 36"