1.) When the G6 is connected directly to the Xbox and not to a PC, is the DD surround signal from the Xbox down mixed to 2.0 stereo in the G6 ?
Yes, it will be downmixed to Dolby Digital Stereo while retaining all audio channels from the surround source.
2.) When pressing the SBX button on the unit it self does that do nothing or does it activate the other SBX features apart from Virtual surround ?
Press once to activate a profile. (Note: Only 1 SBX profile can be remembered by the SBX G6 at a time.)
Press again to turn off the profile.
3.) Is the X7 same as the G6 - when disconnected from the PC it won’t offer virtual surround from the Xbox?
Virtual 7.1 surround requires our custom Creative driver to work. The upmixing is done by the driver which can be downloaded from our support site. The driver only supports Windows PC hence Virtual Surround only works when it is connected to a PC.
Once disconnected, virtual 7.1 will not work. This setting is not saved in the Axx-1 chip as the virtualization process is done by the custom driver. As a workaround, user may want to use the SBX Surround feature as an alternative.