I have a set of Dibeisi DBS805 speakers that I picked up in a pawn shop...I've never heard of them before, and can't find anything online about them either. The plates on the back don't say anything about country of origin, unfortunately. They sound fantastic though, and can handle a lot of power. I'm guessing the 250 watts they are rated for would be an accurate rating. I've thrown 120 watts RMS per channel at them, full volume, and they have never distorted or shown any signs of reaching their limit. I too would like to know more about them....
