Hey guys, I'm looking to build my own vented enclosure (my first) for a 12" BTL fully loaded. I have looked at the box builder programs, but am having trouble. Would someone please design on for me? The maximum dimensions are 15"H x 34"L x 30"D. I plan on making it double baffle, and adding a magnet holder. But I guess before finalizing a design, I was thinking that it should be tuned to 35Hz, what do you guys think? Thanks for the help in advance, Justin