+1, I use DXR10 (and a couple of Alto's) for monitors and sometimes for FOH at smaller gigs. If you are a really loud band then, as Mike says, the DXR10s will probably find themselves struggling with bass. The answer though,as unpalatable as it might sound, is discipline, i.e. play more quietly.
I doubt that just
sticking the bass through the PA will make any noticeable difference to the onstage sound, that is usually determined by the drummer (this is not a dig at drummers BTW) but if the guitar and bass are loud on stage the drummer will play louder to compete. The answer is for everybody to turn it down a little and the onstage sound will be more acceptable. Then the FOH will be able cope with a little kick, bass and guitar* just to add 'spread' in the room and tie everything together.
I have played in pub bands since my teens and run PA systems for bands of all kinds and have never been asked to turn it up
by an audience member (I have been asked to turn it down more times than I care to remember mind you
* I virtually always DI the bass and mic the kick and guitar. The guitar in particular almost never needs to be louder but bringing it up in the FOH just enough that you can hear the difference, seems to bring it into focus. Same with bass DI and kick, not making them louder but getting everything to gel.