Actually got a pair of those, Frank. Mount them on mike stands, put them at the corners of my G70, run stereo from the output of my G70 to both, then take one aux from the band's mixer to add in vocals and anything else I need, they keep up pretty well with a full-on live band (though just one is pushing it for a really loud band!).

Very little low end, but that's what I like when the subs are pumping! Highly recommended, albeit a tad pricey...