A flatlyne WILL NOT kill a SA-12... If anything they are about equal if not the SA-12 is better and for the $320 a subwoofer YEAH right... I like IA but personally don't think their prices reflect their products well at all.
F this Im building a freaking rectangle. Trying to make it taper out just isnt going to work.
Edit- Slight problem. I cant fit any box in my trunk that is deeper than 13 inches. I just tried with a piece of cardboard. Would tapering the backside of the box so its kinda hatchback style fix this or does that still not help me? I cant figure out how to get enough airspace for the sub.. it stinks cause the trunk is plenty big enough but it just wont fit through the opening.
Unless I just go sealed. How would this sub sound sealed? Still plenty of boom?