guys i have 4 rf p3 10's i want to put them in a bandpass box tuned at 68 hz.I used bassbox pro and i gave me an enclosure with one chamber at 16 cubic ft and the other at 5.85 cubic ft. with a port measuring 11"x11" with length of 2 inches. Guys does this sound like it will work? does this measurements sound accurate to you guys and help will be appreciated.