Box design for 2 HDC315s

[NickTheBassHeadCook]

I recently decided to upgrade my system and get 2 AQ HDC315s running off an AQ2200D. I drive an 07 Trailblazer, I need a vented box design for them. The MOST room i have is 44"(W) 18"(H) 26"(D). I want it tuned around 34-35 Hertz. Someone help me out. Also, I cant decide whether to go with the 12s or 15s. Any advice on this? I think the 15s would have plenty of space, but ive never ran AQ before so im not really sure.. someone help me out please.

[Decaf]

you would want 8-9cuft net, your max dimensions with 1 layer all around and a double baffle leaves you with 9.49cuft. each subs displ is roughly .25cuft. so you are down to 9cuft without even adding a port.

port would be roughly 130sqin give or take, to achieve 34/35hz tuning you are looking at over 1cuft port displacement

then you need bracing, which will take up another .1-.3cuft depending on what material you use

in other words, you dont have enough room

[Joe X]

The DC Audio XL 15" can work on 3.25 cubic feet each, much more feasible on your space.

[NickTheBassHeadCook]

What about 12s?

[Decaf]

12s would be easy to fit

if you can find 2 15s that work in 3-3.5cuft per sub as mentioned above that would be better....maximizing cone area within the space you have

[Joe X]

Those will fit easily, at about 2.3-2.5 each you probably could fit 3.

[NickTheBassHeadCook]

I really want the AQs because they are cheap for the quality, I would prefer 15s, there's no way to make to 15s work? Max dimension I can go with is 28.5(depth) 44(width) 18(hight). What would be the best AQ hdc3s to throw in that box?

[NickTheBassHeadCook]

Also, the box for my l515s is 9.25 cubes after all displacements, I can post a pic

[StrongmanDesigns]

_{You can fit the aq's and make them sound great if the box design is done right.}

[NickTheBassHeadCook]

_{You can fit the aq's and make them sound great if the box design is done right.}

You know anyone that could give me a design for the 2 15s? I'll send the exact demensions, it should be right around what I posted. I'll go check exactly.