You have a large(ish) sealed enclosure designed to give you bandwidth and efficiency, which is great for the low BL and Qes/Qts of that driver. It offers bandwidth and extension, not maximum power handling ability. But it sounds like it's doing what it was designed to do, you said you liked the output and extension in your earlier post. I'm not sure why people insist on dumping more watts into their drivers than is necessary, lol.
I guess if you want that type of setup you could throw a port in each side and throw some ultimax drivers in. They'll stand up to the abuse a little better than the HO/HF drivers will.