any real life experiences with the omni 10? how about 1/2 omni 10 (single 10" in 1/2 the size) ? looking for input on its usefulness , or 2 separate o10-1/2's, as a ministack for elctric bass playing rock at moderate volumes with FOH support. Can i get SPL approaching, say, 2 gs112's? whats the frequency cutoff on the high end of things if you forgo the tweeters? thanks.