Hi, It seems that PAWIN_SPEAKER_7POINT1 do not fit the default 7.1 surround configuration. It is better to use PAWIN_SPEAKER_7POINT1_SURROUND as default. Regards, On Wed, Dec 19, 2012 at 8:30 AM, Bielik, Robert <Robert.Bielik@xxxxxxxxx>wrote: > Hi Matthew, > > > What channel mask are you specifying in your WAVEFORMATEXTENSIBLE? > > PA initializes the mask of an 8 channel output device default to > PAWIN_SPEAKER_7POINT1. > > Regards, > /Rob > > > ****************** > > WDMAUDIODEV addresses: > Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx > Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe > Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe > Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx > > URL to WDMAUDIODEV page: > http://www.wdmaudiodev.com/ > >