bought 2 12's and a 15 off ebay from robot underground on ebay.. and all i gotta say is that for 160 shipped its a STEAL. I've only listened to 1 12 in a 2.5 cu ft @ 33 and this thing not only sounds just as clean as my old idmax,icon but on the same amount of power it just hits the lows so much better. Im about to go get this 12 metered on a tl right now and get a number... its to much for my ears in my corsica. i expect 140+ @ 36-39 hz. cant wait for my 160 amp alt to come in and feed it a clean 1400. i cant imagine the 15.. waiting for box