After checking out my car a bit more and taking rough measurements and doing some r&d bs with my current setup I think Im gonna buy 2 more AQ SDC 2.5 15's and go for 4 15" ported. But Im tight for air space, I think I'll get something like 14 cubes net total if I go with the oddshape box and go pretty close to the back of my rear seat.
I have some port questions though. Im currently running the 2 15's @ 38 hz and its port up sub back, which works great and hits hard, but the box is a cube so I rolled it over and went sub forward port up, and it was exactly the same almost identical, the port up may have been a little louder. But what I wana do is put it subs BACK and port PREFERABLY forward (toward head). Possiby with PVC ports. slong the top of the box above the rear heat.
Here a few pix that explain it alot better, see what I mean about making an odd shaped rear wall to get the most space out of my trunk..... harder to build but I need all the space I can get, dad might give me a hand with the angles.
So the tops of the port forward boxes would look like this. Side by side labelled
I dont know anything about using PVC for prots so Im gonna have to reasearch, but I dont think HUGE aeroports like Im gonna need is gonna be in my budget at all when 8-12" PVC would be good for this daily driver.
I dont have any cubic feet numbers so I dont know exactly how big these ports have to be. I think Im gonna have roughly 14 cubes net though, and the AQ SDc 2.5's will be fine on 12sq/in per cube per sub. But theres different measurements to get lenght and diameter with pvc ports right? Anyone have a link? Gonna have to research that.
Just trying to gauge which setup I should be leaning towards....