so I want a good subwoofer to jam out to in my house the only problem is home theater subs are super expensive and once I get my car this summer im going to have to buy another sub for it. So instead of doing that I thought, why dont I just buy a car sub and amp, set it up inside and when I get my car just hook it up in there. Is that a good idea or should I just buy both? im on a high school budget. If I should get a car sub, I totally need a shopping list of stuff I need, like a power supply, splitters, all that. Im completely new to this.