Choose an option from the “5.1 and 5.1.x” or “5.1 to 2.0” pop-up menu.
Click one of the four channel layout buttons to select the speaker layout for which you want to make the adjustments.
Click the Mode pop-up menu, then choose Manual.
The sliders and value fields become active.
Adjust the values by dragging the sliders horizontally or dragging the value fields vertically.
Tip: When mixing a recording of classical music or a Jazz ensemble, the surround and height speakers usually contain room information, not individual instruments, as is common with immersive mixes for pop music. When such a Dolby Atmos mix is rendered to a speaker layout that doesn’t have height speakers or even surround speakers, all those signals would be folded into the front speakers, resulting in an unbalanced mix with too much room information. In such a case, the trim controls allow you to reduce those height and surround levels in the downmix.
Download the guides:
Logic Pro User Guide: PDF