Guide: 2- to 5-channel upmix using Dolby Pro Logic II [Archive . . . - Doom9 The center wav is always very loud compared to the other channels Also, the left and right surround wav's are identical to each other I suspect that the Dolby Pro Logic 1 instead of 2 is being used even though 2 is specified which is the same problem that bleo had with the Cyberlink filter