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<blockquote data-quote="bilkusg" data-source="post: 1032180" data-attributes="member: 111902">I have a fresh install of MP1.5 set up to use the LAV filters and Audio renderer. My broadcast source is HD Freeview which creates .ts files with AAC encoded 2 or 6 channel sound. My PC is connected by optical SPDIF to an Arcam surround amp.I also have other videos encoded in AC3 or DTS.When I watch a program with 6 channels, the two rear channels are not audible at all.I can use the taskbar to monitor LAV which says there is data on all 6 channels, confirms its output as 6 channel 32 bit.The amp has a display which says it's receiving dolby 5.1. I can hear the two front and centre channels, but nothing at all from the rear speakers.If I play an AC3 encoded video, the same thing happens, unless i enable passthru, in which case obviously the soundtrack goes straight through to the amp and it all works.Any ideas? It looks as though MPAR is encoding the 6 channels to AC3 in some funny way which my amp doesn't recognise, or is dropping the rear channels during the encode.Nothing in the logs to suggest a problem, and I'm at my wits end.....Thanks for any help.</blockquote>

[QUOTE="bilkusg, post: 1032180, member: 111902"] I have a fresh install of MP1.5 set up to use the LAV filters and Audio renderer. My broadcast source is HD Freeview which creates .ts files with AAC encoded 2 or 6 channel sound. My PC is connected by optical SPDIF to an Arcam surround amp. I also have other videos encoded in AC3 or DTS. When I watch a program with 6 channels, the two rear channels are not audible at all. I can use the taskbar to monitor LAV which says there is data on all 6 channels, confirms its output as 6 channel 32 bit. The amp has a display which says it's receiving dolby 5.1. I can hear the two front and centre channels, but nothing at all from the rear speakers. If I play an AC3 encoded video, the same thing happens, unless i enable passthru, in which case obviously the soundtrack goes straight through to the amp and it all works. Any ideas? It looks as though MPAR is encoding the 6 channels to AC3 in some funny way which my amp doesn't recognise, or is dropping the rear channels during the encode. Nothing in the logs to suggest a problem, and I'm at my wits end..... Thanks for any help. [/QUOTE]

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