Ok here it is. Sube mounted inverted in a 4 cu ft box on a MB Quart RAA2400 getting 400 watts apiece. The sound **** good. Get pretty friggin loud to. Much louder than my 4 - 8"s. And they got loud. Box is a little big, so I am going to put them inside the box today and see how it is. After that I will start stuffing stuff in their until I get the right area. One of them must have had a little extra glue drip in the coil, cause you can smell it burning. But no noticible difference in sound. Played these to 18 hz and they took it well. The have hella excursion at 18 to. Overall I would say that they are **** good for the price I paid for them. One of them get's a little warm, but that's the one that's burning the glue off. I will post some vids when I put them in the box to show the excursion. I will also post when I find the right size for the box. But in my overall tests so far, they are well worthy of the price they are, and can handle at least 400 apiece. I don't have anymore to throw at it so I can't give a maximum though.