I was wondering how do you decide on a box's size when its for SPL only.
I am designing the box for a Kicker S12L7. This is for competition purposes only, as I already have a very good daily driver. I mean I already know how to design a box for SQ and SQL - I find this easy because you can see what the QTC will come out to every time you change the size/tuning/ect. But with an SPL box do you just go max space? I have 7.5 cuft of space to work with - would a 7.5 cuft box be better than a 6.0 cuft box for my sub? I would think there would be a limit to the size. I mean 7.5 cuft for a single 12 seems like it could **** the sub. If there was a way I could use a box design program, like I did before, and try to change the QTC to like .3 (or whatever would be good for SPL) that'd be cool.
Please help me out so I can compete this season. Thanks!