Box design help with a external port!

[Seth Touchet]

I need to build a box for 2 obsidian 15 v3 d2s and i have a max space of:

30 inch height

26 inch depth

And 56 inch width

I want something tuned around 33 hz and i want a square external port not a aero port

[timc31610]

5 to 7 cubic feet net depending on power. 80 to 100 square inches of port should do it. More info like power you are running would be helpful.

[bigmizzle99]

do a search for a member named BassBarbie...she built subs with external ports, she had an octagonal port on the last pages of her thread that was nice...if you need some ideas for the box (sorry I didnt help with the design)

[Seth Touchet]

Ima be putting 600 on each subwoofer for now