After doing some reading, I might want to go with another manufacturer. There are some nice horror stories the Behringer EP2500, and I don't want to end up with a fried sub.
I'll go into more detail. I currently have a HK 3490 supplying 120 watts per channel into two Control 28. I was hoping to hook up an external amp for the sub using the sub outputs from the HK.
Hopefully this expands the picture.