Potential
Seattle artist Christopher Gronbeck came up with these rock solid speaker enclosures made out of concrete. Usually speaker enclosures or ‘boxes’ are made out of pressed wood panel or MDF. Not sure how these solid concrete speaker enclosures sound, but for the price ($700 per pair with drivers, $600 without) they better play well. At least you’ll know that there won’t be any mice making them their home. The boxes weigh 35lbs each.

It’s a great idea, surely they look good, but with no breathable space chambers. I'm not sure how the speakers
diaphragm will be able to vibrate.