I have recently purchases an Audi 3, I have been trying to figure out what type of subs I should put in it. Most cars I have owned have a trunk so the sub in an enclosure and then in the trunk. What will be the difference now that the sub is moving air inside the vehicle rather than in the trunk. I'm not a bass head and currently have 1 10" in my trunk. I have limited space and don't want to fill up the entire hatch space with big speakers. Any ideas or info would be great.