I get a blue LED on my 4311 display that indicates DSX in some form or another. If I change source or set to Audyssey Multe XT 32 the blue LED goes out. I can get it to come back on if I press the A-DSX and Standard buttons on the remote but the sound changes tremendously to the better or worse, I don’t know. I have read page 132 in the manual and I have no idea of what it is saying, I need a translator.LOL! Is there someone out there that can break this down to neophyte level? Thanks! Paul K.