In LCR, LCRS, 5.0, 5.1, 6.0, 6.1 7.0, 7.0 SDDS, 7.1, and 7.1 SDDS surround formats, the Center % controls whether there is a discrete center channel for the track or a phantom center channel.
In film and video production, the center channel often contains dialog. To enhance the clarity of dialog, it is often beneficial to keep elements such as music out of the center speaker. By reducing the Center Percentage on music tracks, music panned to the front of the soundfield can be panned to only the left and right speakers, forcing them to have a variable phantom center image.
As you reduce the Center Percentage value, the center speaker at the top of the Grid becomes less visible. At 0, the center speaker is completely invisible, reflecting the setting for fully phantom center.
