I just got my blueprint 1503 sub today. Actually came pretty quick. I ordered it last friday and got it at 1:30pm today. And I'm in Canada. Also got some 18" sonotube. It will be in a 160l enclosure with a 6", 26" long port. I also bought a 1200watt amp for $350 off a friend of mine. What I'm wondering now is Do I need an eq with this sub or will it be fine without? Oh yeah, I also got an Energy EAC subcrossover. I was also wondering if I need dual flared ports or if a single flare is enough? The reason I ask is I can't find 6" flared ports anywhere. Even the single flare would have to be made out of the top of the mdf.