05-17-2013, 08:03 PM
Alright, so to start off, I just want to apologize ahead of time if anything I asked seems stupid, but I'm still pretty new to car audio. I've been doing a few hours of research and still haven't came up with anything solid yet. I am planning on getting 2 IDQ v.4 12's for the back of my 2004 xterra. And I was thinking of attempting to build a box for them, but first I need to come up with the plans. So I was wondering what you guys would probably do, I was thinking about building an angled, downfiring ported box, and building it to ID's specs for the sub. First off, I wanted to know how you guys think that box would work out. I would also appreciate any suggestions. I was thinking slanted and downfiring, to try and save a little space for my gear as I am in the military and have to keep some stuff in my vehicle, and to of course, protect the subs. Now for probably, stupid question. In coming up with plans for the box, ID's recommends a volume of 1.9 cu. ft., and a port of 4" round x 13.80" long, with 0 to 3 pounds of polyfill. Now my question is, would these recommendations double with two of the subwoofers, such as 3.8 cu.ft.? And lastly, if I build the box to their recommendations correctly, there wouldn't be any need for polyfill correct? Again, any information is greatly appreciated, as i've looked all of this up quite a bit, but i may just be overthinking everything. Thank you very much.