Axiom Home Page Forums General Discussion Technical Questions 7.1 rear surounds no sound

Turn off secondary audio in the 83. It can't mix the lossless quality with a secondary stream, so it falls back to the lossy track. AIX played some tricks with that disc to make it obvious when you're using software mixing.

Though keep in mind, if you want to use the BluTV or commentaries/games on some BDs you'll have to re-enable the secondary in order to hear them.