I recently purchased a Sony str-dn840 audio receiver along with front speakers and a subwoofer. The FR/FL speakers work fine with all applications, and I've had no problems whatsoever in that area.
The subwoofer is a BIC PL-200 powered subwoofer. It works fine for most uses thus far. I've tested it directly with the receiver via a bluetooth connection to my phone. I've also watched movies on xbox video and the xbox netflix app. In both cases, movies played fine with subwoofer output.
However, when I use several other apps, the subwoofer has no output - this is without changing any settings on the receiver compared to other applications that I mentioned above which work fine. The xbox apps specifically that DO NOT work with the subwoofer are as follows: youtube, vimeo, and the IE browser app (I tried pandora via the IE app). I have yet to try it with the HBO go app
I've searched google and these forums and found nothing related, so anything on this topic would be helpful at this point.