How to hook surround sound up to comcast HD cable box?

Question

I hooked up surround sound to my comcast hd cable box. but for some reason when it is not on a hd channel sound only comes out of the subwoofer. on HD channels everything works fine. How do i change this so it works for all channels.

Answer 1

Make sure that the cable box and receiver are connected with a fiber optic cable... not really sure how u have it now, may want to add that