I wouldn't exactly recommend this as something for folks to do, but it's interesting to see what a home-made sub could look like:
http://www.cnn.com/2013/05/29/tech/i...tml?hpt=hp_bn5
Heck, I've got model subs with that much money in them!
-Jeff
http://www.cnn.com/2013/05/29/tech/i...tml?hpt=hp_bn5
Heck, I've got model subs with that much money in them!

-Jeff