Re: ported truck box
building for a truck isn't that hard imo. just make the port through the top or side so you don't have to deal with port length on the sloped face. here is what i built last weekend for my truck:
65.5"(width) x 16.5"(height) x 6.5"(top depth) x 8.5(bottom depth). port is 3" x 8" x 21.75". built with 3/4" wood
i just used an online port calculator and trialed and errored until i got it where i wanted.(i think it was this one: )
i'd stick between 30-35hz.
pm me if you think i can be of any further assistance and i'll help as much as i can
--My truck: 2007 GMC 1500 crew cab, Kenwood DNX570HD, DLS front stage, SQ3500.1, 3x RD Alpha Max 15"s in 6th order blow through, Second Skin deadening.
--Wife's car: 2013 Chevrolet Impala LTZ, Kenwood DNX470, GermanMAESTRO components on CT125.2, 2x AT10"s on an AT800.1, RF Deadskin deadening.
--Work truck: 2014 GMC 2500 crew cab, Kenwood DNX470, Kenwood front stage, DD M1A on a pair of American Bass XD10s.