Behringer X1222 Music Mixer User Manual


 
5 XENYX X1222USB User Manual
1. Introduction
FBQ Feedback Detection System
The FBQ Feedback Detection System, integrated into the graphic equalizer, is one
of the most outstanding characteristics of this mixing console. This ingenious
circuitry lets you immediately recognize and eliminate feedback frequencies.
The FBQ Feedback Detection System uses the LEDs in the frequency band faders
of the graphic EQ to indicate the critical frequencies. This way, what once used to
be a labor-intensive search for feedback frequencies is now an activity that even
a child could master.
The microphone channels feature high-end XENYX Mic Preamps that compare
well with costly outboard preamps in terms of sound quality and dynamics and
boast the following features:
• 130 dB dynamic range for an incredible amount of headroom
• A bandwidth ranging from below 10 Hz to over 200 kHz for crystal-clear
reproduction of even the nest nuances
• The extremely low-noise and distortion-free circuitry guarantees
absolutely natural and transparent signal reproduction
• They are perfectly matched to every conceivable microphone with
up to 60 dB gain and +48 volt phantom power supply
• They enable you to use the greatly extended dynamic range of
your 24-bit/192 kHz HD recorder to the full, thereby maintaining
optimal audio quality
“British EQ”
The equalizers used for the XENYX Series are based on the legendary circuitry of
top-notch consoles made in Britain, which are renowned throughout the world
for their incredibly warm and musical sound character. Even with extreme gain
settings these equalizers ensure outstanding audio properties.
Multi-eects processor
Additionally, your XENYX mixing console has an eects processor with
24-bit A/D and D/A converters included, which gives you 16 presets producing
rst-class reverb, delay and modulation eects plus numerous multi-eects in
excellent audio quality.
The XENYX mixing consoles are equipped with a state-of-the-art switched-mode
power supply (SMPS). Unlike conventional circuitry an SMPS provides
an optimum supply current regardless of the input voltage. And thanks to its
considerably higher eciency a switched-mode power supply uses less energy
than conventional power supplies.
CAUTION!
We would like to draw your attention to the fact that extreme volumes
may damage your hearing and/or your headphones or loudspeakers.
Turn the MAIN MIX faders and the PHONES control in the main section
fully down before you switch on the unit. Always be careful to set the
appropriate volume.
1.1 General mixing console functions
A mixing console fulls three main functions:
• Signal processing:
Preamplication
Microphones convert sound waves into voltage that has to be amplied
several-fold; then, this voltage is turned into sound that is reproduced
in a loudspeaker. Because micro phone capsules are very delicate in their
construction, output voltage is very low and therefore susceptible to
interference. Therefore, mic signal voltage is amplied directly at the mixer
input to a higher signal level that is less prone to interference. This higher,
interference-safe signal level has to be achieved through amplication using
an amplier of the highest quality in order to amplify the signal and add
as little noise to it as possible. The XENYX Mic Preamp performs this role
beautifully, leaving no traces of noise or sound coloration. Interference that
could take place at the preamplication level could aect signal quality
and purity, and would then be passed on to all other devices, resulting in
inaccurate sounding program during recording or playback.
Level-setting
Signals fed into the mixer using a DI-box (Direct Injection) or the output
of a sound card or a keyboard, often have to be adjusted to the operating
level of your mixing console.
Frequency response correction
Using the equalizers found in each channel strip, you can simply,
quickly and eectively adjust the way a signal sounds.
Eects mixing
In addition to the eects processor contained in your mixer, using the
insert connectors on the mono channels and both aux busses lets you
insert additional signal processors into your signal path.
• Signal distribution:
Individual signals adjusted at each channel strip are laid out at the aux sends
and returns, and are either fed into external eects processors or fed back
to the internal eects processor. Then, the signals are brought back into the
main mix either via the aux return connectors or via direct internal wiring.
The mix for the on-stage musicians is also created using the aux sends
(monitor mix). Similarly, for example, signals for recording equipment,
power ampli ers, headphones and 2-track outputs can also be taken.
• Mix:
All other mixing console functions fall under this vital category. Creating a
mix means primarily adjusting the volume levels of individual instruments
and voices to one another as well as giving them the appropriate weight
within the overall frequency spectrum. Likewise, you’ll have to sensibly
spread individual voices across the stereo image of a signal. At the end
of this process, adjusting the level of the entire mix to other equipment
in the signal path is required (e.g. recorder/crossover/amplier).
The interface of BEHRINGER mixing consoles is optimized for these tasks,
enabling you to easily keep track of the signal path.