Hey guys. I'm going to build a new box for my 2 skar vvx 12's. The enclosure I have now came free with the subs. It is about 3.5 ft tuned to about 36 hz. It only has about 10 sq inches of port per cube. Sounds ok, but I believe more port area would be better. I'm thinking 3.5 cubes is good for the pair, but does anyone have any recommendations on tuning and port area? Thanks.