4 MJ18's sealed on a AQ 2200 (or other 2200-2500 watt @ 1 ohm). Less than $1k and will get loud and sound good doing it. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
well my cousin had 3 15" kicker cvr's running off an absolute amp, not sure the model # in an expedition. and that was loud enough and pounded enough for me lol