should ported sub boxes generally be bigger than sealed boxes? I dont know because in the owners manual it says the opposite. it says 1.94cu.ft per chamber - sealed and for ported it says 1.34 cu ft per chamber.---i dont know what to do.
you can build one, i built my first one ever and it was pretty easy. just get someone on here to help you. Kevin ?Prieve? is the dude that helped me the most, he gave me dimensions and everything i needed, all i needed was to cut and put together. try and talk to him cause im sure he'll help u if hes got time.