Manual Behringer XAir - XR12 (page 22 of 46) (English)

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22 X AIR User Manual

Graphic EQ

There are 3 EQ options for the Main LR and Aux buses: 6-band parametric,

graphic, and “true” EQ. The parametric EQ functions the same as the channel

EQ, only with 6 bands available. The GEQ and TEQ types appear to be identical,

butthe “true” EQ compensates for adjacent frequency adjustments. Most graphic

equalizers have a multiplying eect when several neighboring bands are boosted

or cut, causing an exaggerated EQ adjustment. The TEQ will have an EQ curve that

is more indicative of the actual adjustments made on the sliders.

6.6 Dynamics

A channel’s dynamics can be adjusted on this page. A compressor is useful for

reducing the dynamic range of a signal, allowing the perceived volume in the mix

to be raised without clipping. An expander can add dynamics by attenuating a

signal when it drops below the predetermined threshold. Using the S/E button, a

simple or expanded set of parameters can be selected to accommodate various

levels of mixing expertise.

1. Engage the processor with the ON button.

2. Adjust the Threshold at which the compressor begins to take eect.

Audiothat falls below this setting will remain unaected.

3. Adjust the Knee to allow the compressor to have a more gradual eect on

the signal. When the Knee is set fully to the left (hard knee), any signals that

rise above the threshold will receive the full compression ratio right away.

4. Adjust the Ratio to determine how aggressively the dynamics are aected.

5. Select between a compressor or expander to set the action of the dynamics

processor. While a compressor reduces a signal’s dynamics, an expander

increases the dynamic range.

6. Adjust the Attack knob to set how quickly the compressor takes eect when

the input signal rises above the threshold.

7. Select between Peak or RMS input response. RMS is most common

in compressors, and responds to the average level of incoming audio,

whereasthe Peak setting responds to brief spikes in loudness that would be

allowed through when set to RMS.

8. Adjust the Hold knob to set how long the compressor takes to enter the

release cycle once the audio drops below the threshold.

9. Select between an aggressive Linear or smooth Logarithmic operation.

10. Adjust the Release knob to set how quickly the compressor releases after the

audio drops below the threshold.

11. Use the Gain knob to compensate for changes in level caused by

theprocessor.

12. Adjust the Mix knob to determine how much of the signal is left unaected

by the processor.

13. Select a high cut, low cut or mid peak frequency and bandwidth/slope for

the key lter.

14. Engage the key lter with the Key On button.

15. Select the frequency for the key lter.

6.7 Sends

The Sends screen allows the currently selected channel’s signal to be routed to

the 6 Aux outputs and to the 4 Eects processors. Aux and Eects routing can

also adjusted using the fader banks on the right-hand side of the Main View

screen. The signal can be routed to the buses from specic points in the preamp

chain, such as pre or post EQ (the S/E button must be active).

6.8 Main

When the LR button is active, the channel is assigned to the main bus. For sources

that are not intended for the audience to hear, such as click tracks, removing

the channel from the main bus eliminates the potential to accidentally mix that

source into the mains.

This page also allows the channel to be quickly assigned to a DCA, Mute Group or

Automix group.

The Auto Mix function is very useful for meetings or panel discussions where

multiple microphones are used for speech. The mic channels can be assigned to

one of two auto mix groups, which will automatically attenuate the channels that

are not currently receiving signal. Click the X or Y auto mix buttons in the Main

tab to assign several channels to an auto mix group.

Navigate to the Setup - Preferences tab and engage the Show button

under Automix. This will cause an Automix X and Y button to appear on the

Main View screen.

Whenever an auto mix bus is engaged, a blue gain reduction meter will indicate

the amount of signal reduction for any channels assigned to the bus. This allows

the current speaker to be heard clearly while suppressing any noise from the

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Behringer XAir - XR12 Manual

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