I recently purchased a sub 12 for my home theater. I love it,but i have a question. I want 2 of them. I ordered a sub 12 amp plate on ebay, also the 12 inch woofer for a sub 12. Can i just copy the enclosure that i already have, Same dimentions etcetera and come out with basically the same thing? I have access to a complete woodshop with all the tools i need.The only thing i do not have is the port tube . Does anyone know of a source for something like that? Anything else i need to know?Thanks in advance for any help