XAudio 2.7 Only uses FrontLeft and FrontRight channels

[Kharzette]

I've stepped into all of my SetOutputMatrix calls and all the info coming back from Calculate looks good. The matrix values look ok. I just don't get any audio from center, sub, or rear pair. This is with a 5.1 speaker set.

Really everything in SharpDX looks correct that I can see. DestinationChannel count is 6. Has anyone managed to get 5.1 audio out of 2.7?

[Kharzette]

Ooops, I forgot about the masteringvoice. Setting that to 6 channels works. (this used to work without that though)