The bose only has 1 optical digital in along with 4 coaxial ins. I want to connect my HD box and PS3 to the bose for DD 5.1 sound. The PS3 only has optical out so thats a no brainer. My problem is will I get full 5.1 from the HD box using the coaxial connection?
Yes, you will get 5.1 from your "HD box" using digi-coax. Sorry if you thought my original post wasn't helpful but the question was very vague and as I said, if you spend £3k on kit, you should really do your homework first on something as basic as what connections to use. It doesn't help anyone to answer if you don't list exactly what you have to connect or what connections are available. You have the manuals and equipment in front of you but we don't. Bose isn't that common on these forums TBH, so it means downloading manuals etc.