AJ,

you running the QSC-HPR152 full range?

you should use the mid/high out from the bass into the tops, so they ONLY put out mids/highs, (NO BASS), this way they will push much more power through those frequencies...

and use BASS bottom just for that BASS,
so you will have a nice 3-way sound,
(no low frequencies on the tops)

when i goto large halls i plug the tops to the mid/high out of the bass bottom.

when i goto small halls, i'll run full range out to my tops from the bass bottoms