im sure you believe in the theory of the more subs and watts, the louder it is. your going to try and compress a entire semi trailer??you should have got with someone with building skills before you just took a bunch of sealed boxes and tried to build this.this could have had potential with a laid out 4th order type enclosures for the subs.....sealed boxes??????this thing is gonna sound like *** trying to compress all the cabin space....i say if your lucky a 158 out of it and it will be a high tuned 58 cus there is no way this thing will pickup on any low notes...congrats you just built a sealed mosquito house.besides this is another example of kicker trying to go for the wow factor instead of making something efficient.