I would say pretty much equally both. Definately built to pound and handle a good amount of power in order to do so (they like about 500-600 watts rms each) but in a SQ system they do okay with about half that barely. any less and you arent really doing them much justice. Do M6's pound, haha **** right they do!
I have an M6mkIID4, Rumble. I love it, bro - badda$$ sub. Put it in a good box and you won't be disappointed, trust me. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif