Справочник Пользователя для Behringer 1222FX

XENYX 1222FX

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:
s

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 finest 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-effects processor

Additionally, your XENYX mixing console has an effects

processor with 24-bit A/D and D/A converters included, which

gives you 100 presets producing first-class reverb, delay and

modulation effects plus numerous multi-effects 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

efficiency a switched-mode power supply uses less energy

than conventional power supplies.
USB/Audio interface

The USB interface supplied with the unit is a perfect match for

the XENYX Series and serves as a powerful recording interface

to your PC or MAC

. It supports the digital transmission of signals

on up to four channels with max. 48 kHz and extremely low

latency. When wired to the CD/TAPE INPUT and OUTPUT

connectors, the interface transfers the stereo mix from the

console directly to a computer. Both the recording signal and the

playback signal from the computer can be monitored at the same

time. In this way, you can use several recording runs to produce

complete multi-track recordings.

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 fulfils three main functions:

Signal processing:
Preamplification

Microphones convert sound waves into voltage that has

to be amplified 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 amplified

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 amplification using an

amplifier 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 preamplification level could affect 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 effectively adjust the way a signal

sounds.
Effects mixing

In addition to the effects 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 effects processors or fed back to the internal

effects 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-

fiers, 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, youll 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/amplifier).

The interface of BEHRINGER mixing consoles is optimized for

these tasks, enabling you to easily keep track of the signal path.

1.2 The users manual

The users manual is designed to give you both an overview of

the controls, as well as detailed information on how to use them.

In order to help you understand the links between the controls,

we have arranged them in groups according to their function. If

you need to know more about specific issues, please visit our

website at http://www.behringer.com. Additional information and

explanations about various music industry/audio technology

terminology can be found on individual product pages as well as

in the glossary in the ULTRANET area of www.behringer.com.

1. INTRODUCTION