WOW!!!

I just received the EP2500 today and am Very aggravated that I didnt wait to buy it. I have 50+ pounds of beautiful amplifier and nothing to hook it up to. Very annoying.

SO the Amp is gracing the Dining Room floor until I get the sub built.
I did notice that there was some "non-standard" connections on the back of it so I might as well get these straightened out while Im waiting on the Sub to get delivered.
My amplifier has a RCA connector to go to the SUB... I dont see one on the back of the Behringer EP2500. SO.. how do I wire the inputs? DO I use the TS connector or balanced XLR? How do I convert from RCA to one of those?
On a Dual 2ohm RL-p15, which output should I use?
Do I wire the sub in parallel or series?
There is a group of DIP switches... What settings for Subwoofer use should I set?
I apologize for all the questions but this is fairly new to me and I have nobody in my group of friends that believe me when I say Bose Systems can be bested by DIY gear so their knowledge is very limited as well.
Thanks
Dan