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XENYX QX1202USB/QX1002USB User Manual

GAIN

Use the 

GAIN

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

turned fully counterclockwise 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 GAIN control is turned all the way 

down, connect your equipment. Set the GAIN 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 GAIN slightly, for -10 dBV a 

bit more. Tweaking is done using the CLIP LED.

COMP

Use the COMP knob to adjust the amount of compression effect on the channel. 

Compression limits the dynamic range of the audio source, which can help vocals 

cut through a mix better, for example. Turn the COMP knob clockwise until the 

adjacent LED occasionally lights during speech/singing.

EQ

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.
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.

LOW CUT

In addition, the mono channels are equipped with a steep 

LOW CUT

 filter 

designed to eliminate unwanted low-frequency signal components. These can 

be noises created by hand-held microphones, subsonic noise or plosive sounds 

created by highly sensitive microphones.

FX

FX sends enable you to feed signals via a variable control from one or more 

channels and sum these signals to a bus. The bus appears at the console’s FX send 

output and can be fed from there to an external effects device. The return from 

the effects unit is then brought back into the console on the stereo channels. 

Each FX send is mono and features up to +15 dB gain.
As the name suggests, the 

FX

 sends of the XENYX mixing consoles are intended to 

drive effects devices (reverb, delay, etc.) and are therefore configured post-fader. 

With XENYX mixing consoles, the channel fader is called LEVEL control.
In the QX1002/1202USB, 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 (-∞).

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.

LEVEL

The 

LEVEL

 control determines the level of the channel signal in the main mix.

◊ 

Attention: Since the FX path for the effect processor is connected 
post-fader, the LEVEL control has to be turned up in order to get this 
channel’s signal to the effects processor!

CLIP

The 

CLIP

-LED’s of the mono channels illuminate when the input signal is driven 

too high, which could cause distortion. If this happens, use the GAIN control to 

reduce the preamp level until the LED does not light anymore.

2.2  Stereo channels

Fig. 2.2: Connectors and controls on the stereo channels

LINE IN

Each stereo channel has two balanced line level inputs on ¼" connectors for left 

and right channels. If only the connector marked “L” (left) is used, the channel 

operates in mono. The stereo channels are designed to handle typical line level 

signals. Both inputs will also accept unbalanced connectors.

FX

The FX send of the stereo channels functions similar to that of the mono channels. 

However, since the FX send bus is mono, a mono sum is first taken from the stereo 

input before it is sent to the FX bus.