How can I "force" Wwise to output in an Ambisonics configuration?

Question

Hi,

I'm trying to output Wwise into a 3rd order Ambisonics configuration, however, I cannot output more than 8 channels (7.1) as any configuration with a channel count higher than this is not visible. There is the "Use audio device ShareSet" option however, these sharesets seem to always default to the highest channel count that Windows perceives the audio device as.

Now, the Ambisonics configuration which I am using takes a 16 channel input, runs it through Reaper, which then decodes it into a higher channel count to much the number of speakers in the room (28 I think). The audio device connected to the PC can output 32 channels.

Any help on this is greatly appreciated!

Adrian.