How should I connect the optical input to the receiver that has no HDMI--from the TV or from the cable box? As presently connected sound plays from either or both the TV speakers and the home theater speakers but there is a slight delay so an echo when using both the TV and the home theater speakers.
Using Comcast Xfinity cable, newest Samsung 55 800 TV, Onkyo Receiver.
Using Comcast Xfinity cable, newest Samsung 55 800 TV, Onkyo Receiver.