Yes, you need the optical connection, or else the analogue stereo one marked "AUDIO OUT" on the TV. HDMI has only one-way audio (HT to TV), but that should be turned off when using the HT speakers.
I need help in setting up my home theater. i currently have a:
Samsung PS50B450 TV
Samsung HT-TZ325 HT
i am wanting to get the external speakers to work while watching TV. When both HT and TV are on their is no sound at all.I have reciever on in the Anynet+ options and also tried the HDMI Audio option on/off. I have a HDMI cable plugged in and im not sure if i need a optical audio cable as well to get this going.
Hope someone can shed some light on this situation.