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XENYX QX2442USB/QX2222USB/QX1832USB/QX1622USB User Manual

PFL (LEVEL SET)

To activate the PFL function, press the MODE switch. The PFL function should, as a 

rule, be used for level setting (GAIN). The signal is sourced pre-fader and assigned 

to the mono PFL bus. In “PFL” mode, only the left side of the peak meter is in 

operation. A PFL’d channel should be driven to the 0 dB mark of the VU meter.

SOLO (NORMAL)

When the MODE switch is not depressed, the stereo solo bus is active. Solo is 

actually short for “Solo In Place”. This is the customary method for listening to 

an individual signal or to a group of signals. As soon as a solo switch is pressed, 

all channels not solo selected are muted in the monitor path (control room and 

phones). A channel’s position in the stereo image is maintained. The solo bus 

carries the output signals of the channel pan controls, the aux sends and the 

stereo line inputs. On the QX2442USB all aux returns, and on the QX1832USB 

only aux return 2 can be routed to the solo bus. The solo bus is, as a rule, 

taken post-fader.

◊ 

The PAN control in the channel strip offers a constant power 
characteristic. This means that the signal is always at a constant level, 
irrespective of position in the stereo panorama. If the PAN control is 
moved fully left or right, the level in that channel increases by 4 dB. 
This ensures that, when set at the center of the stereo image, the audio 
signal does not appear louder. For this reason, with the solo function 
activated (Solo in Place), audio signals from channels with PAN controls 
that have not been moved fully left or right are displayed at a lower 
volume than in the PFL function.

As a rule, solo signals are monitored via the control room outputs and 

headphones jack and are displayed by the level meters. If a solo switch is pressed, 

the signals from the tape input, the subgroups and the main mix are cut from 

these outputs and the level meter.

MAIN SOLO

The 

MAIN SOLO

 LED lights up as soon as a channel or aux send solo switch is 

pressed. The MODE switch must be set to “Solo”.

PFL (LEVEL SET)

The 

PFL

 (LEVEL SET) LED indicates that the peak meter is set to PFL mode.

Fig. 2.17: PHONES jack

PHONES jack

You can connect headphones to this ¼" stereo jack (QX2442USB: 2 phones jacks). 

The signal routed to the 

PHONES

 connection is the same as that routed to the 

control room output.

2.3.12  Subgroups and main mix fader

You use the high-precision quality faders to control the output level of the 

subgroups and the main mix.

LEFT/RIGHT switch

The switches located above the subgroup faders assign the subgroup signal 

either to the left or right side of the main bus. Similarly, it can be routed to 

both sides or none at all. In the latter case, the submix is present only at the 

corresponding subgroup outputs.

QX2442USB

Fig. 2.18: Subgroup and main mix fader

3.  Graphic 9-Band Equalizer 

(QX1832USB only)

QX1832USB

Fig. 3.1: The graphic stereo equalizer of the QX1832USB

The graphic stereo equalizer allows you to tailor the sound to the room acoustics.