Well it's not that simple. We had one on loan and after having to swap spdif cables and coax cables and all the fonnections needed to use the D-Box full potential ai took it back and bought a SSL Sigmafor my home,
I know this is pretty well explained:
https://m.youtube.com/watch?v=rzqEw25XCU0
https://m.youtube.com/watch?v=9XSXEbfJC9A
https://m.youtube.com/watch?v=zlu0Uirpam8
https://m.youtube.com/watch?v=xMdQ34JZU-0
https://m.youtube.com/watch?v=C7URjvxUy9s
Look into these and let us know if that helps.