After many attempts at making a box for a 15" TSNS to fit into my Nissan Altima without modifying the chassis, I finally found a plausible solution.
Gross volume:4.448 cubes(Estimated motor size and cone displacement subtracted from net)
Possible port length: ~47", lowest possible tuning 29.5Hz
Sub: 15" T3 TSNS
Port: 10" PVC pipe/aero, 78.5in^2
It uses a 10" PVC pipe as the port, and it's path is indicated by the bold line on the right side of the picture, with the hole being the cutout for it. I will cut elbows by using a band saw to cut it at a 45, then twisting the pipe so that it will form a 90, clamp and apply putty epoxy internally and externally where I can. Who knows? I might clump it on the outside internal to the corner, and internally on the outside of the corner, and sand it down to a nice fillet-like corner.
I am bracing it primarily with lead screws, but the mounting face has a double baffle.
The main issue I am having in my head is that the port is fairly close to the sub. Will there be a loading issue?
Other questions: Is there:
Too large of a port? I am able to get the full length for tuning. Possible loading issues?
Port noise possible due to the elbows/non flared ends?