Good day to you all. My canton 102's were delivered and am just running through the setup of them  On the subwoofer there are inputs for L/R High Level Inputs and L/R Low Level Inputs. Am confused as to which ones should be used! My AV receiver is the Onkyo 605. Also, my Sub is almost right beside me, would that cause problems, do you think? See attached pic outlining layout! Cheers!