NBS is for real and quite good they are supposed to be as well. They should be for the money. The company made their name as a cable company apparetnly http://www.nbscables.com/products/speakers.html The Thor and SIren go for $100,000.00US and weigh 1,000lbs 15hz-22khz and a whopping ridiculous 115db sensitivity. Strangely they recommend 100-1000 watts. But if those numbers are correct and the you push a 1000 watt amp into them they could concievably play loud enough to kill you.

You can hear these speakers along with other well regarded and classic loudspeakers at http://www.dejavuaudio.com/speakers2004.html I will be looking into them at the CES in January. Very funky design concept.