PRESONUS StudioLive III Series Owner's Manual page 62

When the Center Divergence is set to 50% and the channel is panned to the center
(<C>), the signal will be sent to the both sides of the Stereo bus and the Center bus at
the same level.
当 Center Divergence设置为50%时，通道Pan到中央（<C>），信号将以
相同的电平，发送到立体声总线和中央总线的两侧。
When the Center Divergence control is set to 100% and the channel is panned to
center (<C>), the entire signal will be sent to the Center bus and none will be sent to
the Left or Right sides of the Main stereo bus:
Center Divergence控制设置为 100%，通道被Pan到中心（<C>）时，整个信号将
发送到中心总线，而没有信号的送到主立体声总线的左或右两侧。
Any channel or subgroup can be assigned to the L/R Main bus and/or the Center
bus by pressing the Mono/Center button.
任何通道或subgroup都可以分配到 L/R Main bus 和/或 Center
bus 上，只要按Mono/Center 按钮就可以。
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