So correct me if im wrong but the point of bass is to feel it correct? Not nessesarly hear it. Obviously with the amount of air being moved no matter what your gonna hear it. But from a sq point of view i am deadset on the idea of the sub being directly behind the driver and passenger seats, not in the trunk. The bass kicks me in the back and gives my music more of a 3d feel, as opposed to having it in the trunk. Granted i have zero sound dampening and my trunk rattles to hell when its back there, it just seems better, and less work on the sub to have it directly behind you. Ive never heard a fully sound deadened car before but it seems counter intuitive regardless of how much sound deaden is in the trunk. Again i want to feel the bass, no hear it, bounce off the rear of the trunk, or resonate from the whole vehicle. People keep saying if its in the cabin it cancels it self out or whatever. Somehow i highly doubt this. Honestly, whatever happens to the sound waves AFTER it passes me, why should i care. It doesnt drown out my front stage so with that being said, im thinking about pursueing the idea of going 3 subs and taking out my entire back seat and putting the subs there, facing the front. I think sealing off the trunk, however that may be accomplished, would be way better then fighting trunk rattle. I dont need my rear seat anyway. Im sure this has been beat to death but i am not convinced that trunk bass will ever be as good as cabin bass.
Edit: i should also note...
To do this right i would imagine i would have to completely take the bottom and back of the rear seat out, replace it with some sort of flat wood or metal wear the bottom and back of the seat used to be. Ensuring a complete seal off from the trunk entirely and that the subs had a firm, flat surface to rest on that would not absorb the base and lose part of the soundwave on the surface. This has got to be a sure fire way to perfect cabin bass.
Granted i will only ever be able to carry two people in the car, myself included. Its a sacrifice im willing to make. Id love to hear someones setup that has done something similiar