I am looking for a little sub that would fit under my rear bench so that people can still sit in the back, but so that I can have a little thump to my music. Any suggestions on size and/or what type of sub. I used to have a 12" MTX sub, sorry don't recall what series, but it was great. Now that I am within arms reach of most of the inside of the truck, I want a little sub that kicks just alittle, nothing like some people like it going down the street.