those seem nice. they wont take the 200rms as free air though. i'd guess about 50-65 maybe. just a guess though. i know you can use mb quart subs as free air also but only handle about 75rms that way. wow, just looked at the price too for the xtant. very nice price indeed sir. if you're getting 2 subs, you'll only need about 150rms at most(for the xtant it'll be like 120 or so probably). kicker's are nice but not much sq.