Im building a box for a 18" BL. I designed this box on the RE website, but for some reason it just doesnt seem right to me. It a L-ported box.
W=40" H=19" D=26"
port length 1=18.25" (long part on L)
port length 2=7" (little part on L)
box vol= 7 cubic feet
Should i go with this box or is it wrong?