I use the speakers as PA mid/high speakers together with two 15 inch subs and low cut of 100 Hz. I generally use the contour-setting and flat bass.
I bought the XA model to be able to use them as monitors as well. I haven't tried it yet though.
The sound is transparent, loud, and clear and they function well with the subs. They have a precise sound and pack a good punch. I guess they will have all the power that I will ever need. Perhaps I ought to have another pair of subs to really match them, but I rarely need to play that loud.
The build quality appears to be very good, yet they are compact and not too heavy.