Well I have a low-end AV Receiver that also doesn't do HDMI audio so I bought one of these from Amazon. It has three options (pass-through, 2ch, 5.1ch) and only configuration I can get to work is to use the "5.1ch" setting with the "Dolby Digital" option set to "on" in the ATV settings.
However, this forces everything to be DD regardless and consequently any content that's actually not in DD is problematic. The issue is that, usually, my amp will recognise stereo input and use Pro Logic to fake 5.1 meaning that the central speaker gets used. However, forcing DD means it can't do this any more and as a result the output is in stereo. There's no way of forcing my amp to use Pro Logic and it would be annoying to manage this anyway.
Any ideas if there's any solution to this? I don't know why the "auto" setting doesn't work for DD—I simply get no audio at all.
That's odd, the 2 channel setting on the box should pass a stereo signal to your amp allowing it to then do pro-logic. Could be a faulty box maybe?
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