decided on box shape for 8 ft3 box w= 23.5 h=32 d=23.5 this is 8.54 ft3 the extra .54 is for driver, bracing, and ports
this allows for most efficient use of a 4x8 sheet 1 sheet needed for the box. extra wood needed for bracing I have not decided on bracing yet.
I will use red oak plywood from home depot and use red oak stain with polyurethane for finish.
total price for each box jbl gto15 for driver , red oak plywood, Dayton binding post,etc $200 for 8ft3 passive...