Large masonry stations are not unlike great cathedrals built in the middle ages in Europe. The acoustics are terrible, no matter how good the sound system is. Mostly because of the long reverberations from the sound bouncing back and forth off the various non-sound absorbing wall and ceiling material. As I was a music major in college a hundred years ago, something we learned about structures such as the great hall in Chicago, and especially large stone churches, is - if you sing it, chant style, it is heard and understood much better. In fact, that is one of the reasons chant in a church service came into being in the middle ages. No one could understand a word anyone was saying. But, when the words are chanted, it is perfectly intelligible. Sometime when you are in a big church, try it.
Now - if we could get them to chant the announcements at CUS we'd all be set.