I also have the 811 hooked up to the X-1. The screen is 9 feet wide by 5 feet high. I had a crowd over for the superbowl and everyone was blown away! However, I agree that SD tv is almost unwatchable.
Chewy:
I am not familiar with the AVR55. It appears to be about 6 years old where the 8000 was discontinued little over a year ago. Make sure you are on the right inputs. See manual at:
http://manuals.harman.com/HK/Owner%27s%20Manual/AVR55%20OM4-98.pdf
Other than that cannot be of much help...
It is official now.
http://www.corporate-ir.net/ireye/ir_site.zhtml?ticker=dish&script=410&layout=-6&item_id=574539
The Lakers/Wolfes game will be on tonight in HD.