Ok well I'm building a box for my hdc315. I already have my wood cut except for the port.
H = 16.5"
W = 43"
D = 16.5" (This is the top where the sub and the port will be. It's double baffled so it will be 17.25" with the second baffle)
I need the box tuned to 36hz with around 65sq" of port area. Could someone tell me the dimensions I need my port to be and the final volume with my port displaced.