8

XENYX QX2442USB/QX2222USB/QX1832USB/QX1622USB User Manual

2.2.2  Equalizer stereo channels

The stereo channels contain a stereo EQ section. The cut-off frequencies of 

the high and low bands are 12 kHz and 80 Hz respectively, while the center 

frequencies of the high-mid and low-mid bands are 3 kHz and 500 Hz 

respectively. The HIGH and LOW controls have the same characteristics as the EQ 

in the mono channels. Both mid range bands are of the peak filter type. A stereo 

EQ is superior to two mono EQs on a stereo signal as two separate EQs will usually 

result in a discrepancy between left and right channels.

2.2.3  Aux sends stereo channels

In principle, the aux sends of the stereo channels function the same way as those 

of the mono channels. As the aux sends are mono, the send from a stereo channel 

is first summed to mono before it reaches the aux bus.

2.2.4  Routing switch, solo and channel fader

Fig. 2.6: Balance control and mute switch

BAL

The 

BAL

(ANCE) control has a similar function to the PAN control in the 

mono channels.
The balance control determines the levels of the left and right input signals 

relative to each other before both signals are routed to the left/right main mix 

bus (or odd/even subgroup).
The remaining control elements in the stereo channels perform the same 

functions as their counterparts in the mono channels (MUTE switch, MUTE and 

CLIP LEDs, SOLO switch,  SUB and MAIN switches and channel fader).

2.3  Interface panel and main section

Where it was useful to trace the signal flow from top to bottom in order to gain 

an understanding of the channel strips, we now look at the mixing console from 

left to right. The signals are, so to speak, collected from the same point on each of 

the channel strips and then routed to the main section all together.

2.3.1  MON control, aux sends 1, 2 and 3 (FX)

Turning up the AUX 1 control in a channel routes the signal to the aux send bus 1.

◊ 

As the QX1832USB is equipped with an additional monitor path, its first 
aux control in the channel strips is named MON. The console also has a 
dedicated master fader (MON SEND) for this aux path.

AUX SEND 1, 2 and 4

The AUX SEND 1 control governs the master send level of the mix created by the 

individual channel AUX 1 sends.
Likewise, the AUX SEND 2 control is the master control for the aux 2 bus, 

and AUX SEND 4 controls the AUX 4 bus.

QX2442USB

Fig. 2.7: The AUX SEND controls of the main section

AUX SEND 3 (FX)

The 

FX

 control determines the signal level for effects processing, i.e. regulates 

the level to an external (or the internal) effects device. 
QX1622USB and QX1832USB: On these consoles, this function is performed by the 

AUX SEND 2 control (FX).

SOLO

You can use the SOLO switch to separately monitor the aux sends via the CONTROL 

ROOM/PHONES outputs and check these with the level meters.

◊ 

If you want to monitor the signal of just one AUX bus, none of the other 
SOLO SWITCHES should be pressed and the MODE switch should be in 
the SOLO position (not depressed).

2.3.2  Aux send jacks

QX2442USB

QX1832USB

Fig. 2.8: Aux send jacks

AUX SEND jacks

The 

AUX SEND

 jack should be used when hooking up a monitor power amp or 

active monitor speaker system. The relevant aux path should be set pre-fader. 

◊ 

On the QX2222USB, aux send 1 is hard wired as pre-fader and hence 
called MON. Model QX1832USB has a dedicated monitor output 
(MON OUT jack), cf. chapter 2.3.4.

As already mentioned, the aux sends in the channels— if set post-fader—

can be used to connect to external effects devices.