Damn you guys don't give this guy a break. I must say the build quality on the box is pretty impressive coming from him. And otherwise some of you are giving him shit for no reason. There is nothing wrong at all with 2 subs in a single chamber ported, hell I have built tons of boxes like that, and seen 100s more like it. In fact it is easier, smarter, and just overall better really do it like that. As for the size of the box, 4.4 doesn't seem to big. Hell given the amp that is being used, it is probally smart to make the box that big. It's going to allow the subs to much more effieicent, so a ton of power won't be neccesary.