Building a new system

Hey. I am putting a new system in my car. It is a 1994 eagle talon, so it doesn't have much room in the trunk at all. I just put a new 145 amp alternator in and I am going to buy a couple batteries. So i will have plenty of power to run almost anything i want. I have to watch how much money I am spending though, cause of the fact that I am also putting a dvd player and multiple screens in the car. When I comes down to it that all cost a lot of money. I was going to put 4 10" phoenix Golds in but then I decided to look at some other stuff. I am just looking for some ideas on what I should put in. I want it to be LOUD. but I also need save space cause of the size of the hatch and try not to spend to much. Ideas for subs and amps would be nice.

Leave the extra batteries out for now, you don't even know if you need them yet. All they will do is give you a longer play time with the car not running, but they will present a larger load for you tiny little alternator to try and keep charged. If you want a new battery, that is great, but replace the factory one only.

To get loud or loud with some sq, this is totally different. Are you going for all out spl or do want to drive around and enjoy your music and have it play to a respectable level, say 140 db. (permanent hearing damage territory). The road to what you want to do has a lot of questions that need to be asked and answered by both you and the people that respond. I think that I've given you some questions and answers that you should ponder over before you dive in.

Ok about the rockford. I really hate punch. Power on the other hand are not bad. I was actually also looking into buying 2 Rockford 12" Power subs and runnning each off of its own JBL 1200.1. In my last wehicle (S10) I was running only one power and a 1200.1 It was not bad. But I am not sure yet. I think I want louder then that. And I am replacing the stock battery and putting in atleast one more. I am planning in going in some SPL competitions in the area so I will need that. and I guess my defentition of not much money if more then most peoples out there. I think I may hook it up so that I can run one sub when I am just driving around normally, and then make it so i can runn everything all at once at the flick of a switch. this way it will not put wear on my alternator.

yea, thats not too hard, just put each sub on a seperate amp, and toggle switch the rem wire. not too hard. i've done it a few times

What about two or three 12" Eclipse Aluminums? These would pound pretty hard.

What about 2 12" eclipse aluminums and  1 JBL 1200.1s? These would be plenty loud. At the local car audio shop where I live they have two 10s in a ported box and it shakes the whole store. 

I imagine that this is a daily driver for you and that you want to be able to listen to your music as well, correct. If this is the case then the overall design and choice of components are drastically different from a pure SPL system. 150db is stinking loud dude, way into permanent hearing damage territory. I hope that you have good or amazing front speakers, ampified and a good cd player to round it out, otherwise you will be the one note wonder bass machine. At that volume level as well it is important with the choice of the cd player. 150db is no good if the shockwave of the subs cause the cd player to skip. Just a little more things to contemplate. When do you anticipate starting this system?