Why doesn't my Sony Home theater work properly?

Question

O.K. Just purchased the HT-DDW790 Home Theater System and i have my xbox 360 hooked up to it via an optic cable. The sound is very good and it sounds like surround sound but the only speakers noise is coming out of is the front 2. The center speaker and the back 2 don't project any sound. Why is this and how can I fix it?

Answer 1

check connections

Answer 2

Check your manual. Your receiver employs a test tone function that'll let you know if it's set up correctly.