This has nothing to do with car audio but I had to share it. I was browsing and came across a 11" squared home subwoofer with a 10" driver. The biggest surprise was when I saw it had a 2700 watt amp built into it....check it out. It is a Sunfire "True Subwoofer" The link is
http://www.sunfire.com/products/index.html
http://www.sunfire.com/products/index.html