To check by ear, attach your speaker wires into the lower set of speaker terminals, then use your biwire jumper to reach the upper set of speaker terminals. This often is what sounds best. If you find that written instructions contradict this intuitive placement then follow the written instructions from the manufacturer. Usually, the solid piece of metal provided to jumper between lower and higher speaker terminals is not as good sounding as short run of high quality speaker wire. For example, for $20 Mapleshade sells a higher quality jumper speaker ribbon wire. After listening to this setup for a few selections, you can try instead to connect your speaker wires to the upper set of speaker terminals first, and listen to the same selections to see if sound is superior.