"So if the L/R front and L/R rear pairings were ok, but the C/Sub pair was inverted, the board would cope?"

Yes, each SPDIF output has the ability to invert its 2 channels side to side independent of the other SPDIF outputs. So in your example above you would simply move one jumper on the board to invert the serial data for the C/Sub output and everything would be proper.

Shawn

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