Справочник Пользователя для Behringer 1222FX

XENYX 1222FX

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 dB) 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.

The circuitry of the British EQs is based on the technology

used in the best-known top-of-the-line consoles and providing a

warm sound without any unwanted side effects. The result are

extremely musical equalizers which, unlike simple equalizers,

cause no side effects such as phase shifting or bandwidth

limitation, even with extreme gain settings of ±15 dB.

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.

2.1.3 Aux sends (MON and FX)

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.

If you press the MUTE switch of the respective

channel, aux sends and returns (MON and FX) are

not being muted.

MON

In the 1222FX, 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 1222FX, the FX send is routed directly to the built-in

effects processor. To make sure that the effects processor

receives an input signal, you shouldnt turn this control all the

way to the left (-oo). Dont have the FX MUTE switch pressed,

and you should also not have the FX SEND fader pulled down.

2.1.4 Pan, mute switch and channel fader