i currently have an 05 XXX 12" in a 2.5 cu ft @ 28hz box, im thinkin of switchin to a 15" tc-3000 in a 2cu ft sealed box, do you think that the tc-3000 sealed would be louder than my 12" xxx ported? of the same amp (orion 1200D), also is the 1200D 0.5 ohm stable daily? as the tc-3000 has a quad voice coil so i could configure it for 0.5 ohms) thanks for any advice