Waterbox Design

I'm about to fab up a waterbox for my ski but I have some questions that I'm sure some of you will be able to answer. I'd like to build a box that has a deep sound and is fairly quiet, but not kill flow. I want it all, right? Is a large volume key here? Baffles? Best to have the inlet tube near the top of the box with the exit starting at the bottom?
 
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