System information
Adjusting the center channel trim level
1. 
Deselect the Automation  Settings button   on the track or bus you want to adjust.
2. 
Double-click the surround  panner   on the track.  The Surround Panner window is displayed.
3.  Drag the Center  fader to boost or attenuate the volume of the center channel. When the  fader is set 
to 0.0 dB, no gain is applied.
The Center       fader is not displayed if the center channel is muted. Click the center      channel icon 
 to unmute the channel.
Automating the center channel level with keyframes
1. 
Select the Automation  Settings button   on the track or bus you want to adjust.
2. 
Double-click the surround  panner   on the track.  The Surround Panner window is displayed.
3.  Select a keyframe to adjust  its center channel level or click to position the cursor where you want  to 
create a new keyframe.
4.  Drag the Center  fader to boost or attenuate the volume of the center channel. When the  fader is set 
to 0.0 dB, no gain is applied. The fader thumb is displayed  as a   in automation mode.
The Center       fader is not displayed if the center channel is muted. Click the center      channel icon 
 to unmute the channel.
Panning a track or bus
You can perform surround panning in two ways:
n  Pan tracks individually using the Surround Panner window.
n  Route  tracks to channel strips in the Mixing Console (busses or assignable effect  chains) and pan 
the channel strips using the Surround Panner window. For more information, see "Assigning Tracks 
to Busses" on page 335. From   the View menu, choose Show  Bus Tracks to display bus tracks at the 
bottom of the track view.
When a track is routed to a bus other than the surround master, you  can use the Pan  slider on the 
track header to adjust the stereo track's contribution to  the surround panner on the bus.
The surround panner can function as a trim control that  adjusts the overall panning of the track, or it can 
adjust track panning  automation settings. Click the Automation  Settings button   in the track or bus and 
select Automation  Settings to adjust surround panning keyframes, or deselect the  command to adjust trim 
levels.
The trim level is added to the pan automation settings so  your keyframes are preserved, but with a boost or 
cut applied. For example,   setting the trim control to -9% left has the same effect as moving every  keyframe 
9% to the left.
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