Behringer Europack UB1222FX-Pro User Manual

EURORACK UB1222FX-PRO User Manual

LOW CUT
The mono channels of the mixing consoles have a high-slope LOW CUT filter for 

eliminating unwanted, low-frequency signal components (80 Hz, 18 dB/octave).

TRIM
Use the TRIM control to adjust the input gain. This control should always be 

turned fully counter-clockwise whenever you connect or disconnect a signal 

source to one of the inputs. 
The scale has 2 different value ranges: the first value range (+10 to +60 dB) 

refers to the MIC input and shows the amplification for the signals fed in there.
The second value range (+10 to -40 dBu) refers to the line input and shows its 

sensitivity. The settings for equipment with standard line-level signals (-10 dBV 

or +4 dBu) look like this: While the TRIM control is turned all the way down, 

connect your equipment. Set the TRIM control to the external devices’ standard 

output level. If that unit has an output signal level display, it should show 0 dB 

during signal peaks. For +4 dBu, turn up TRIM slightly, for -10 dBV a bit more. 

Tweaking is done using the LEVEL SET LED.

LEVEL SET
This LED lights up when the optimum operating signal level is achieved. 

During normal use, this LED should only light up during signal peaks.

2.1.2   Equalizer
All mono input channels include a 3-band equalizer. All bands provide boost or 

cut of up to 15 dB. In the central position, the equalizer is inactive.

Fig. 2.2: The equalizer of the input channels

The upper (HIGH) and the lower band (LOW) are shelving filters that increase 

or decrease all frequencies above or below their cut-off frequency. The cut-off 

frequencies of the upper and lower band are 12 kHz and 80 Hz respectively. 

The mid band is configured as a peak filter with a center frequency of 2.5 kHz. 

Unlike shelving filters, the peak filter processes a frequency range that extends 

upwards and downwards around its middle frequency.

Fig. 2.3: The AUX SEND controls in the channel strips

Aux sends take signals via a control from one or more channels and sum these 

signals to a so-called bus. This bus signal is sent to an aux send connector and 

then routed, for example, to an active monitor speaker or an external effects 

device. The return from an external effects device can then be brought back into 

the console via the aux return connectors.

For situations that require effects processing, the aux sends are usually switched 

post-fader so that the effects volume in a channel corresponds to the position 

of the channel fader. If this were not the case, the effects signal of the channel 

would remain audible even when the fader is turned to zero. 
When setting up a monitor mix, the aux sends are generally switched to 

pre-fader; i.e. they operate independently of the position of the channel fader.
Both aux sends are mono, are sourced after the equalizer and offer up to 

+15 dB gain.

MON
In the UB1222FX-PRO, aux send 1 (MON) is wired pre-fader and is thus 

particularly suitable for setting up monitor mixes.

FX
The aux send labeled FX is for feeding external effects devices and is thus set up 

to be post-fader.
In the UB1222FX-PRO, the FX send is routed directly to the built-in effects 

processor. To make sure that the effects processor receives an input signal, 

you shouldn’t turn this control all the way to the left (-∞). Don’t have the 

FX MUTE switch pressed, and you should also not have the FX SEND fader 

pulled down.

Fig. 2.4: Channel fader and additional control elements

PAN
The PAN control determines the position of the channel signal within the stereo 

image. This control features a constant-power characteristic, which means the 

signal is always maintained at a constant level, irrespective of position in the 

stereo panorama.

MUTE
Use the MUTE switch to mute the channel. This means that the channel signal 

is no longer present in the main mix. However, the aux sends (MON and FX) 

remain active.