I know someone on here has the tour x TX1152. I would like to know if they have ever compared them to QSC K12? I use my K12's for small parties, but would like more bass without adding a sub. Also if you have the TX1152's, do you have covers for them? and are the covers good quality(thick-padded). Oh I know that I am asking to compare powered vs non powered, but I would like to buy non powered this time.