Wait a min...I'm no sound expert, but wouldn't the acoustics/ design of the room have an effect on all that
I know that our current building gives us no problems at all..But go to the new building with the same setting & you'd think something is wrong with your hardware, when it's merely the room..
What you have to do is inspect if the speakers are set up the right way.
Try adjusting the settings to something that will yield the best possible results..it's advisable to note down all those settings, including way that speakers have been positioned once you are satisfied with the sound.
HINT: it might not be a bad idea to get the guys from Guitar Center to come & help set it up for you if they won't charge too much (1 guy at church gets all that for free coz he's a loyal customer & built a relationship with the owner)..
I hope this is handy advice.