[Geoff St. Germain]

I can't answer all the questions, since I don't have that amp, but I can answer a couple.

You can use either the TS or XLR connections. You just need to either make a cable or get an adapter. I made a cable for my XTi2000 that is RCA male on one end and XLR male on the other. You could do the same with a TS connector as well. If you google RCA to XLR in google you'll find ones to buy and instructions to make your own from the parts if you want to do that.

You have pretty much two ways to wire that sub to use with your amp. You can either run each voice coil off of one channel of the amp or wire the voice coils in series and run it off of one channel or you can bridge the amplifier. If you wire the RL-P15 D2's voice coils in parallel you'll have a 1 ohm load which could damage the amp (not to mention your driver as the EP2500 is could deliver a lot of power at that voltage until it could b damaged.

I don't know anything about the DIP switches on that amp so you'll have to look at the manual. You're probably going to be able to set things like a high-pass filter and whether the amp is bridged and how the inputs and outputs are wired (ie channel 1 to both outputs, etc). You won't want the high-pass because it is probably going to be set at around 30 Hz. I had a QSC PLX-2402 and I believe it had off, 30 Hz and 50 Hz for the high-pass filters.