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6 XENYX 1204USB/X1204USB User Manual
Control Elements and Connectors2.
This chapter describes the various control elements of your mixing console.
All controls, switches and connectors will be discussed in detail.
Mono channels2.1
Microphone and line inputs 2.1.1
Fig. 2.1: Connectors and controls of mic/line inputs
MIC
Each mono input channel oers a balanced microphone input via the XLR
connector and also features switchable +48 V phantom power supply for
condenser microphones. The XENYX preamps provide undistorted and noise-free
gain as is typically known only from costly outboard preamps.
Please mute your playback system before you activate the phantom ◊
power supply to prevent switch-on thumps being directed to your
loudspeakers. Please also note the instructions in chapter 2.4.2
“Voltage supply, phantom power and fuse”.
LINE IN
Each mono input also features a balanced line input on a ¼" connector.
Unbalanced devices (mono jacks) can also be connected to these inputs.
Please remember that you can only use either the microphone ◊
or the line input of a channel at any one time. You can never use
both simultaneously!
LOW CUT
The mono channels of the mixing consoles have a high-slope LOW CUT lter for
eliminating unwanted low-frequency signal components (75 Hz, 18 dB/octave).
GAIN
Use the TRIM 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.
COMPRESSOR
Each mono channel features a built-in compressor which lowers the dynamic
range of the signal and increases its perceived loudness. The loud peaks are
squashed down and the quiet sections are boosted.
Turn the COMP knob clockwise to add more compression eect. The adjacent LED
with light when the eect is engaged.
Equalizer2.1.2
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 eects. The result are extremely musical equalizers which, unlike simple
equalizers, cause no side eects 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 (HI) and the lower band (LO) are shelving lters that increase or
decrease all frequencies above or below their cut-o frequency. The cut-o
frequencies of the upper and lower band are 12 kHz and 80 Hz respectively.
The mid band is congured as a peak lter with a center frequency of 2.5 kHz.
Aux sends2.1.3
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 eects
device. The return from an external eect can then be brought back into the
console via the aux return connectors.
For situations which require eects processing, the aux sends are usually
switched post-fader so that the eects volume in a channel corresponds to
the position of the channel fader. If this were not the case, the eects 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 oer up
to +15 dB gain.
If you press the MUTE/ALT 3-4 switch, aux send 1 is muted, ◊
provided that it is switched post-fader. However, this does not affect
the aux send 2 of the X1204USB.