Live Tv only uses left/right speaker. What happened to the rest?

[smashjt]

I think I've had a win

I d/led grahphedt and gave it a go. Playback and live showed GBPVR used the same settings. It made no difference between default and nvidia (audio/video) since I think nvidia is the default anyway

The more I looked at the graph, the more the AC3 filter stared at me and since I hadn't spent too much time playing with the settings there, I had a look.

What I discovered was that I had set the AC3 filter to dolby prologic which killed live TV surround whilst retaining playback surround. I then changed that to 5 channels and viola! Live surround. However, welcome back squirrels.

I'm starting to think that the weird sound is actually dependent upon the original source? Or simply a by-product of the AC3 filter process. On the same channel (any), ads and programs have a varying degree of quality. Some seem fine whilst others "distort".

Actually, as I'm typing this I have been listening to the rear speakers only and I'm discovering that the "squirrelly" sound appears to be dialouge bleeding. Non vocal audio sounds fine but when people start to talk, electrified liquid squirrels.:p

Phew. At least I have narrowed done the culprit.

Thanks alot to everyone for your help. I might even take a error resolving break for a day or two. Then again, there is that timeshifting problem...

[pastro]

Sounds like the ac3 filter is causing trouble like you said. I don't know if you will get any response but the filter lists the authors email and invites people to send questions, etc to him.