Hi, recently I´ve tried to connect my MS40 monitors to a Smart TV via the optical line and the problem is that it only sounds the right speaker, sounds very well but only de right. The left one it seems to vibrate a little but it doesn´t make any sound. The TV output is set in PCM mode. I don´t have any problems with the rca connectios. They sounds really good. Thank you very much and sorry for my poor english.