Hi I recently purchased two 35ft optical cables from mono price plus a splitter. I want to use these cables to run from my PC to two Logitech z-5500 speakers. currently only one set of speakers will work under the splitter. If I wire from either set of speakers right to the sound card they work. Is there some setting i would have to set to make both sets work at the same time? Or is it possible for the wires to be too long for the sound card to power both?