I am going to run the subwoofer cable into the wall, over the ceiling and back down the rear wall to connect to the PB-1ISD. What is the best solution for connecting it to my HK AVR230? I am looking at a blown-up image of the rear of this sub, and there are high level inputs/outputs and low level input/outputs. What it all mean? I have never owned a sub with this many connection options before, so be gentle. My current sub for my old HTIB has one plug, that's all! Help!