This is what I've started working on for my Xterra. This isn't a full range build, mainly just for bass, seeing as I'm on a budget(no job) and that's where the stock system is most lacking. This is my first REAL build. What I had before was just some old house boxes shoved into the back and hooked up with a 40w EQ. Yes, I know, redneck as hell. So, let the fun begin! Oh, and all pics are off of a phone, so quality isn't that good.
What I'm starting with. It's pretty good to use, seeing as there is plenty of room in the back.
My head unit. Nothing special, a Sony Xplod GT25, 52w max x4, 17w rms x4.
My amp. Definitely nothing special, a DP Audio 250w max x2. Remember, BUDGET.
One of the subs that are going in, Pyle PLW12BL, 800w max, 400w rms. Ooooh, priddy.
Now! On to the actual building! The box is made out of 3/4" OSB(or plywood, not really sure about the differences), measures 37.5"x17.5"x17.5", and is about 5.26 cubes. This is it after constructing and siliconing(if that's a word) it.
The top of the box. Look carefully and you can see the cutout lines.
This is all for now, but I should have more pics to post in a few days.