ok 2 dwscent 15s will always be louder then 1 15. i dont think the mtxs are that much better that it wold produce twice the spl as a type-R. a type-R will sound a lot better doing it too.
nope the 9500 will be louder why??? it has greater xmax and grater vd, plus in the contes on cxi i think the 9500 it came in 4th place in spl and the 9500 will be loduer than the kicker l7, yes the l7 have good output and get loud
2 type rs will be 3dB louder than 1 type r, given the same power for each. it all depends on box.... I've seen 1 15" type r hit 155.x ...havent heard much for numbers on the 9500... but i saw some at a car show once, and they were insanely loud, and hardly moving.... I would go with 1 9500. Better SQ than both others mentioned, and just as loud, if not louder