Reminds me of an embarrassing but true story.
When I was like 13 I discovered rap music and bass. I used my allowance to buy a Realistic (Radio Shack brand) 12" subwoofer. I wired that bitch up to my cheap cassette boombox and set the speaker down into a cylindrical metal Texas Rangers trash can (about 10" diameter and 3' tall) to serve as an enclosure. It didn't hit hard or anything but it worked. Ha! I even put the whole setup in the back of my dad's Pinto (this was 1989) and cranked it when he dropped me off at school. I guess you could say that was my first system. What a doofus I was.