Has anyone tried building a box to fire through the skipass directly into the cabin? Sealing the front of the box to the back of the seatpanel to avoid cancellation?
I'm thinking one could use 1 or 2 of the nicer 8" subs (ID8 or the new 8W7). and use wingnuts on flanges or something to attach it so it can be moved if you need to use the skipass. With that size you could keep it under 9 1/2" in depth and have full access to your spare without having to move it if you got a flat (when you would least like to be messing with your sub enclosure).
Any thoughts on this?