I'm building a 4th order box for 3 p2 12's. 3.99 cubes sealed, 2 ported per. box will be 32wx16.5Tx42l. Port will be for the 6 cubes at 16 per foot so im gonna do 100 sq inches of port. so a 10 x 10 port. I'm wanting to tune to 38 htz I need the length of the port. Any and all help thanks!!!
