Replied earlier, but not appearing. Yes, you will get DD sound with Coax connection. I have Onkyo receiver and I get DD sound in majority of HD channels, but all are not 5.1. In such cases, where only stereo audio is available in DD I change it to stereo in STB then the receiver converts it to 5.1.
Thanks for the response. I tried with a with a 75 ohms video RCA(yellow cable) and audio cable (red RCA) but in both cases I didn't get any sound from my HT in any of the HD channels. Of course I changed the STB audio setting to Home cinema. I have a normal HD STB, not a DVR. What could be the possible reasons ? Is it that the coaxial digital O/P is available only with DVR or something else ? Anyhow, my HT converts the analog stereo to 5.1 that is reasonably good.
The videocon CC every time gives contradictory replies , many of them in CC even don't know what is 5.1.