ES2 Surround mode in Logic Pro for Mac
In surround ES2 instances, additional parameters are shown in the slide out Extended Parameters section at the bottom of the plug-in window.
ES2 Surround parameters
Surround Range slider and field: Drag to set the range of the surround angle (0 to 360 degrees). In other words, this sets the breadth of the surround field. You can modulate the movement of sounds within the surround range by using the Pan target in the router.
Surround Diversity: Drag to set how the output signal is distributed across your surround speakers. If you choose a value of 0, only the speakers that are closest to the original signal position carry the signal. A diversity value of 1 distributes an identical amount of signal to all speakers. You can modulate the distribution of signals between speakers with the Diversity target in the router.
Legacy Surr(ound) Level Mode checkbox: Select to compensate for changes in surround level handling in projects created with earlier Logic versions, if required. This parameter should be turned off for new projects.