2 AMERICAN BASS XFL 15'S PORT HELP

[kfx400kid]

I need some help with the port for my box that i am trying to build, i have used the torres box calculator and have come up with a box that is 20h x 38w x 24d. The subs will be facing up and the port is going on the back of the box facing the hatch in the middle. For a port i have 18.5h x 28d and i have .5ft3 for woofer displacment and have it check for using three common walls. Now the port opening is 5" so were is make the L i have to make it 2.5" from the back on each side. No from this point on i am lost as to what to cut the boards to. I know that it won't be 28" long but i am not sure what the length with be and any help would be great.....

[stevenE140]

^{use re audios box calculator and type in all your dimentions it tells you what to cut your wood to}