Box for 18" BTL
#35
Haha an idea if you don't care much for trunk space is to do like I am. My box won't fit in my trunk, so like any man that craves power I am cutting the frame of my car, sticking it in there, and welding her back up. Should be good as gold and any potential thieves are gonna go bat crazy when they try to get to my amps cozy on the opposite side of a 1" bar cage welded on the open end of my trunk. Farkers.
#36
Haha Welding er back up is a good idea, However in my case I have two cosmetic peices in my trunk! I am cutting them loose and NOT putting htem back in!! These get in the way of my port and make it a VERY crappy small box design until I cut these! ANyways like I said before Good luck with your build on this BTL, BIG subs man!!
#38
the displacement of the bracing, meaning The space that the BRacing occupies, So say you have a peice of wood, 18.5" x 35" x 2" you must calculate the displacement that wood occupies!! For all the bracing!! This does add up to be a good chunk