The following example shows one possible way to configure the I/O Setup dialog to mix in 4‑channel LCRS format, with an HD I/O.
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For additional I/O Setup information, see Output Busses.5 In the Channel Grid, click in the box below the first (left-most) audio interface channel for the path. Pro Tools automatically fills up the adjacent units to the right. If you click in the LCRS row under channel 1, the LCRS path will be assigned to channels 1–4.
7 If the Bus page does not show the correct output bus mappings for the LCRS output, click the Default button (for All Busses or for Output Busses).8 Select the new LCRS path and click the Reveal Sub-paths triangle.9 If not all of the sub-paths are present, do the following:
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Click New Sub-Path.
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Name the new sub-path LCR and select LCR as the Path format. Click in channel 1 in the LCR row to assign the bus path.
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Select the LCRS path, click New Sub-Path, and create a stereo sub-path for front Left and front Right.
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Select the LCRS path, click New Sub-Path, and create a mono sub-path for the Center channel.
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Select the LCRS path, click New Sub-Path, and create a mono sub-path for the Surround channel.