3.5

158MainStage Effects
Direction Mixer parameters
• Input buttons: Set the input signal type. Use LR if the input signal is a standard left/right
signal. Use MS if the signal is middle and side encoded.
• Direction knob and field: Set the pan position for the middle—the center of the stereo
base—of the recorded stereo signal. When Direction is set to a value of 0, the midpoint
of the stereo base in a stereo recording is perfectly centered within the mix.
When you work with LRsignals:
• At 90°, the center of the stereo base is panned hard left.
• At −90°, the center of the stereo base is panned hard right.
• Higher values move the center of the stereo base back toward the center of the
stereo mix, but this also has the effect of swapping the stereo sides of the recording.
For example, at a value of either 180° or −180°, the center of the stereo base is dead
center in the mix, but the left and right sides of the recording are swapped.
When you work with MSsignals:
• At 90°, the middle signal is panned hard left.
• At −90°, the middle signal is panned hard right.
• Higher values move the middle signal back toward the center of the stereo mix, but
this also has the effect of swapping the side signals of the recording. For example,
at a value of either 180° or −180°, the middle signal is dead center in the mix, but the
left and right sides of the side signal are swapped.
• Spread slider and field: Determine the spread of the stereo base in LR input signals or
set the side signal level in MSinput signals. Spread parameter behavior changes when
fed LR or MSsignals. These differences are outlined below:
When you are working with LRsignals:
• At a neutral value of 1, the left side of the signal is positioned precisely to the left
and the right side precisely to the right. As you decrease the Spread value, the two
sides move toward the center of the stereo image.
• A value of 0 produces a summed mono signal—both sides of the input signal are
routed to the two outputs at the same level. At values greater than 1, the stereo base
is extended out to an imaginary point beyond the spatial limits of the speakers.
When you are working with MS signals:
• Values of 1 or higher increase the level of the side signal, making it louder than the
middle signal.
• At a value of 2, you hear only the side signal.
• Split button: Split the signal into independently controlled high and low ranges.