i have just purchased an lg 37lh4000 lcd tv and a logitec z523 speaker system, when i was in the shop i heard the sound from it, and the salesman said i could have one with the tv it only needs 1 lead into the headphone jack, but it doesnt work, it will will work from the connections on the subwoofer through the red and white phono jacks into the sky hd system, which is nothing like surround sound like i heard, looking for help please jeff.