I am preparing to build a 5.1 or 7.1 home audio system for my computer and was wondering if there was any way to use a car sub on a home system. I am preferential to car subs as they are larger and cheaper. The sub would be about 7 ft from the pc to prevent any potential magnetic distortion. Or if anyone has a sub in the 12 to 15 inch range with amp in the 100 dollar range that would work.