well i got my sub today 18" q bp option and that bi** is big came through ups fine no problems so now i have to build my box i did all my measurements on the re calculator and wrote down what i thought was the parts needed list and did the math and thought i could use just one sheet of mdf and when i drew it up i realized that i didnt write down the measurements for tha face but i guess its a blessing in disquise because istill have a couple of questions about it all like bracing double baffle and brad nails or screws so for its sub up port back driver side i was thinking just a like a 1 x 3/4" strip of mdf placed close to the sub but everything else i have no clue and probally not right on the braceing so any help is greatly appriecated
I would x2 baffle, use brads and glue to get it together, then use like 1 5/8 drywall screws to hold it together. Predrill the holes. Screws like every 8-10 inches. stay away like 2" from ends. and make a X type cross brace. I would x2 that as well. staggering the overlap.