DJ JDub

I'm not familiar with those amps but is there a reason your only using 4gauge for your power and grounds? the amps only have spots for 4 gauge wire.

ok thats the answer i was looking for hahaha thanks

haha greeeeat thanks.

ok, What type of port should i use?

i have 4 12" mtx 5512-44 with 2 ta4501 amps and 4 gauge power and ground wires. 2nd battery hooked up with 2 runs of 1/0 wire

ok thanks. i am a noob at ports so i had no idea

ok thanks, and it is a 98 blazer 4door

Which is better to produce more sound. Port facing back? or port facing up?

So new box dimensions 28Hx40Wx16.25D still need help with port, if its possible with those dimensions.

If i were to make a sealed box would i have to separate each sub within the box or can i just have one big box?

Honestly, you might. You just don't have enough room for 4 12's ported. How much difference is there between the two? (ported to sealed)

Would i be better off with just going with a bigger sealed box than i have now?

http://www.mtx.com/caraudio/products/subwoofers/TechData_T5512-44.pdf Page 3 is the ported box for one sub. but i have no clue how i would implement it for all four subs. and no idea what its tuned to.

Prob. going to sound like a noob here but no i really have no idea about tuning. Basically i was just going to go off the specs that MTX gave me for the ported box but wasnt sure if that would be the best thing to do for it.