wtf man are you guys serious come on man how many cubes does this **** sub need 4 per sub? what subs are you running i thought i saw bl in there somewhere so i am guessing fi, man sell them get you some rd alpha max's about 5000watts 4 batts an shit load of highs, the subs only need 2.5 cubes so thats 8 to 9 cubes for the whole shabang.
i mean come on its not possiable to put 4 15's in a maxima not enough airspace, man if my teammate had of listen to you guys before his 16 10's build in a taco he would have never done it.
you can do whatever you want, may not perform the way you want but it can be done.
ppl tell me all the time 15's are too much for your car an its a nissan altima 98 model.
you can fit 2 15's in that trunk an do some damage trust me on this cause i am doing it now.
fire your subs up port to drver side tune to 38-44hz box size 36x14x18 or 22 man i done it an it was nasty with 2 rd 15 elites on 4000watts with 14.7 volts an not upgraded alt.