Dane I can make the tubes any diameter. All I have to do it roll them like I did on the Phat-Boy.
However on the Barney boat I opted to purchase 6" irrigation pipe. You can also get it in 7".
The best way is to find what speakers you want to run and then build the canisters to match.
For them the 5 1/4" will be fine. It depends on who you are and what you can tolerate.
Jeff like I said before I am not interested in making canisters for a living. There are a number of company's out there that do that. For the time that is involved and what I would need to sell them for the profit margin is not there. I am just helping out some friends of mine.
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