When watching a DVD, the surround sound plays all background music but the actors voices are not heard - can hear music and voices in 2 speaker only - TV programs play in 2, 3, and 5 speaker mode.

If there is nothing at all from the center channel while watching a DVD, first try resetting the system (unplug the power cord from the sub, and the DC power cord from the media center for 30+ seconds) If a reset doesn't help this, run the "adaptIQ" setup disc again. Honestly, this is a very odd problem for that system to have. (especially since we know the center speaker works for other sources) I hope this helps.