I just bought the logitech z680's and am having trouble setting them up. I bought a monster cable coax rca to coax rca. The problem is it plugs into the input for the speakers fine but on the other end at the 5680 I can't plug them in all the way because of an gold outer shell around the rca connector, I broke that off mostly, but it still doesn't plug in all the way and am not getting any signal. All the cables at best buy had this outer shell so that it cannot plug into the 5680 spdif port. Any suggestions on what to do?









