Great all around utility speaker. I've used them without subs to distribute sound further out (delay zone) from the main LR mix. At first I wasn't happy with the bass (wasn't expecting much), but it only took a few seconds to scoop it in the parametric eq with the ipad app and get it to where I like it. Cool. They are useful as a powerful floor wedge monitor as well. I provide sound for events where I might need a separate setup that I can't patch into the main mixer - a remote cocktail area for example. I tape an ipad onto on of the units and it's good to go. In comparison, I've heard the old K12's plenty of times and think these PRXs sound a little better with more clarity in the highs. I haven't heard the latest 12.2's so I can't compare.