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<blockquote data-quote="kiwijunglist" data-source="post: 1135595" data-attributes="member: 76888">To answer your question:AFAIK: 5.1 vs 5.1 surround refers to the position of the rear speakers in 5.1.&nbsp; Either to the side and slightly behind or quite far behind.Regarding MPAR:When I play 7.1 audio test tracks and downmix in MPAR to 5.1 and 5.1 surround there appears to be no difference.My suggestion (if using MPAR, ie audio reclock and not bitstreaming):Set MPAR to either (because i can find no difference). Use LAV to mix to 5.1 so you can enable a form of clipping protection.As to why you were missing dialog.&nbsp; I suggest you listen to test audio video files in mepo.&nbsp; Check 5.1 AC3 + 5.1 AAC + 5.1 Dolby + 5.1 DTS + 5.1 DolbyHD + 5.1 DTSHD + 7.1 DTSHD + 7.1 Dolby You can find these via searching.&nbsp; If you check what audio format was in the movie you were testing that would be useful, as you could specifically test that format.&nbsp; Double check you are playing the correct audio screen (press F9)Also: is the audio DTS 5.1 (lossy) or DTS Master HD 5.1 (lossless), because you need to have dtsdecoderdll.dll installed manually to use lav+mpar with lossless audio.</blockquote>

[QUOTE="kiwijunglist, post: 1135595, member: 76888"] To answer your question: AFAIK: 5.1 vs 5.1 surround refers to the position of the rear speakers in 5.1. Either to the side and slightly behind or quite far behind. Regarding MPAR: When I play 7.1 audio test tracks and downmix in MPAR to 5.1 and 5.1 surround there appears to be no difference. My suggestion (if using MPAR, ie audio reclock and not bitstreaming): Set MPAR to either (because i can find no difference). Use LAV to mix to 5.1 so you can enable a form of clipping protection. As to why you were missing dialog. I suggest you listen to test audio video files in mepo. Check 5.1 AC3 + 5.1 AAC + 5.1 Dolby + 5.1 DTS + 5.1 DolbyHD + 5.1 DTSHD + 7.1 DTSHD + 7.1 Dolby You can find these via searching. If you check what audio format was in the movie you were testing that would be useful, as you could specifically test that format. Double check you are playing the correct audio screen (press F9) Also: is the audio DTS 5.1 (lossy) or DTS Master HD 5.1 (lossless), because you need to have dtsdecoderdll.dll installed manually to use lav+mpar with [B]lossless [/B]audio. [/QUOTE]

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