One RCA jack in the pre-out section connects to a RCA input on the XPA-5. Under the front out, one RCA is for the left front and the lower is for the right front. All of your preouts appear to be set up this way(except for the center and SW outs). So connect the LF out to a RCA input on the amp and your LF speaker to the terminals below. And so forth with the rest of your speakers. Hope this helps.