car subwoofers in a room

I don't know of any receivers that will power a subwoofer.  There is no difference using car audio subs inside than using home theatre subs, you just need the proper enclosure.  Like Stevdart said, you'll need to construct a home theatre-style enclosure and purchase a subwoofer amplifier designed for use in the house.  Hmm, two Infinity Perfect 12's in about 9 cuft ported at 18Hz with a 500 watt plate amp should be about right.  I cannot recommend you try to use any car audio amplifiers inside.

thanks alot.

Why does a home theatre box need to be so big???

and how would i figure out the port size? cause if you use a calculator online for a car box wouldnt it be off?

If you were to work up a subwoofer built for car audio use in a box-building program (see my WinISD sticky in the Car Audio forum and go through the steps for a good learning experience), you'll likely see recommended cubic feet that are larger than a lot of the manufacturer's recommendations for box size.  The small confines of the car audio environment introduces a proportionally greater "cabin gain" to the overall sound than a room in a home does.  I would basically just tend more to the small side for the car and to the large side for the home.

Manufacturers of subs (the good ones, anyway) build some characteristics into the woofer to allow it to perform to its best in one environment or the other, and that has to do with room size.  You know that a room in your house is larger than the room in a car, and that is what they model when they develop these subs.  The characteristic differences are shown in the parameters provided by the sub manufacturer, so you can model either a home sub or a car audio sub in the program and it will come out right.

You definitely want to model this sub if you are intending to port it.  Box tuning has to do with the airspace in the box, so whether it's for home or car the tuning will be appropriate...as long as it's good for the sub in question.

hint:  post the model of your subs and then follow DYohn's advice on box size.  He has built home theaters for the stars.

there 2 12 inch Infinity reference