2021-08-04, 14:12
I recently installed a Blustream CMX42AB HDMI matrix with audio extraction, which is connected to my surround amplifier via S/PDIF. This works well for most content, but there is a problem with files that have an AAC encoded Dolby Pro Logic II audio track. When playing such a file I can only hear the surround effects, with no centre/dialog audio - though the amplifier still detects "ProLogic" as the source format. The same files work perfectly with an external sound card providing audio passthrough to the amp via S/PDIF or TOSLINK. Does anyone know what I can do to fix this?