I have a 95 Ford Explorer XLT and I just bought 2 Pioneer TS-W306C 12" subs that total 1000w each/ 2000w total. I was thinking about placing the subs behind my rear seats with an amp but don't know how to go about doing it and I don't know if it will sound great.  Heres how my rear seat looks and what I want to do:

 

Sure, you can do that.  Is there enough room behind the seats so the required enclosures will fit?Support the12volt.com

Theres more than enough room. I can put 4 subs if I wanted to but I don't know how to even start waht I want to do. Do I need to open m seats up and place plywood in there for support? All the wires that are need for the system are hooked up as I had 2 10" MTX subs in a box before but I wanted to upgrade and save space at the same time. Any help is appreciated.

Wait a minute, wait a minute.  Are you trying to mount woofers INSIDE your seats, or to the backs of them, without using an enclosure?  No, I can't recommend doing that.  You will still need the "box."Support the12volt.com

Why would I need the box? The reason I wanted to mount them on the seats is to save space by having them enclosed in the seats. Would they sound bad without a box? I seen it done before in a truck as well.

well how would I go about doing it with enclosures?

You could read the proper enclosures sticky up above.

If you want to save space and still have a little rubmle in your trunk MTX has a loaded stealth box with a 10 inch woofer that would get the job done. I haven't seen any boxes that can fit a 12 inch sub but maybe you can make a custom box of your own to do what you need it to do. If you mount the current subs in the back of you will not be pleased with the results and it will damage your subs. I hope this helps.

I had 2 10" MTX before in my truck and I have seen this stealth box but its only one sub so I may just have to place my subs in a box.