Originally Posted by lorilotus
If the downloaded source material is dts 5.1 is it better to play "pure direct" or through the decoder with pllx movie? Is pure direct generally the preferred setting? Also curious if I should opt for pure direct or pllx game with consoles like the 360 or Wii u
Do you have a 6.1 or 7.1 setup? If not, PL IIx shouldn't even be an option. I think the receiver might even sort this out for you (you may need to set the Extended Surround setting to Auto or On). Pure Direct, I believe, removes YPAO settings from the equation, and I'm not sure why you'd want to do this. Some people are purists and feel that the processing affects the sound--I'm not one who is overly concerned with that, so keep this in mind as you read my comments here. I think the room and speaker response correction YPAO provides far outweigh any audio coloration the processing might add. If your speakers have a very non-flat response and there are room modes involved, Pure Direct isn't so pure anyway. With music, many people will be picky about this, but for movies I wouldn't use Pure Direct (but that's just me).
Note that PD might also affect the bass management settings. I think the LFE channel will be the only thing sent to the sub, as opposed to using the cross-over setting. I'm not sure about the sub trim and the sub output level--perhaps if you have a strong bass setting to get lots of punch from movies, some of those settings won't have any effect in PD.
Bottom line, though, is that it's your listening experience so try the options and choose what you like the best. I listen to TV and movies mostly using the Standard Movie setting, but I dabble.
EDIT: Also, if you do have a 6.1 or 7.1 (ore more) setup, I think PD will reduce that to whatever the source is. In the case you mentioned, it would be 5.1, so you lose your other two speakers (backs, wides, heights, whatever you have set up).