Quick question: I was bored last night so I popped in a LOTR DVD. Normally I put the disk in and let it go. I have a 7.1 speaker set up with the 990/770 combo using a Pioneer AVI59. I have both optical and analog connections(SACD use).

Anyways, I was playing around with the menu selections and decided to change the audio from Dolby-Digital 5.1 to DTS-EX 6.1. Now the 990 went into "Auto DTS-Ex" and I was able to get the SB speaker icon to light up when I set the DTS mode to "discreet". The problem is I had no audio whatsoever come out of the rear speakers. Yet if I set the audio to Dolby Digital + PLL Movie, there is sound.

Am I confused or missing something here??