6
EURORACK UB1222FX
-PRO
1.3.2 Initial operation
Be sure that there is enough space around the unit for cooling
purposes and to avoid over-heating. Please do not place your
mixing console on high-temperature devices such as radiators
or power amps. The console is connected to the mains via the
supplied power cable. The console meets the required safety
standards. Blown fuses must only be replaced by fuses of the
same type and rating.
+
Please note that all units must be properly
grounded. For your own safety, you should never
remove any ground connectors from electrical
devices or power cables, or render them in-
operative.
+
Please ensure that only qualified people install and
operate the mixing console. During installation and
operation, the user must have sufficient electrical
contact to earth, otherwise electrostatic discharges
might affect the operation of the unit.
1.3.3 Warranty
Please take time to fill out and return the warranty card within
14 days after the date of purchase, so as to be entitled to benefit
from our extended warranty. Alternatively, you can use our
online registration option available on the worldwide web
(www.behringer.com). You will find the serial number on the
rear of your mixing console.
2. CONTROL ELEMENTS AND
CONNECTORS
This chapter describes the various control elements of your
mixing console. All controls, switches and connectors will be
discussed in detail.
2.1 Mono channels
2.1.1 Microphone and line inputs
Fig. 2.1: Connectors and controls of mic/line inputs
MIC
Each mono input channel offers a balanced microphone input
via the XLR connector and also features a switchable +48 V
phantom power supply for condenser microphones (see rear
panel).
+
Please mute your playback system before you
activate the phantom power supply to prevent
switch-on thumps being directed to your loud-
speakers. Please also note the instructions in
chapter 2.5 Rear view of UB1222FX-PRO.
LINE IN
Each mono input also features a balanced line input on a 1/4"
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!
INSERT
Insert points enable the processing of a signal with dynamic
processors or equalizers. They are sourced pre-fader, pre-EQ
and pre-aux send. Unlike reverb or other effects devices, whose
signals are usually added to the dry signal, dynamic processors
are most effective on the complete signal. In this case, aux send
paths are a less-than-perfect solution. It is better to interrupt the
signal path and insert a dynamic processor and/or equalizer.
After processing, the signal is routed back to the console at
precisely the same point it left. However, the channel signal path
is interrupted only if a plug is inserted into the corresponding jack
(stereo phone plug: tip = signal output; ring = return input). All
mono input channels are equipped with inserts.
Inserts can also be used as pre-EQ direct outputs, without
interrupting the signal path. To this end, you will need a cable
fitted with mono phone plugs on the tape machine or effects
device end, and a bridged stereo phone plug on the console side
(tip and ring connected).
LOW CUT
The mono channels of the mixing consoles have a high-slope
LOW CUT
filter for eliminating unwanted, low-frequency signal
components (80 Hz, 18 dB/octave).
TRIM
Use the
TRIM
control to adjust the input gain. This control
should always be turned fully counter-clockwise whenever you
connect or disconnect a signal source to one of the inputs.
The scale has 2 different value ranges: the first value range
(
+10
to
+60
dB)
refers to the MIC input and shows the
amplification
for the signals fed in there.
The second value range (
+10
to
-40
dB)
refers to the line input
and shows its
sensitivity
. The settings for equipment with
standard line-level signals (-10 dBV or +4 dBu) look like this:
While the TRIM control is turned all the way down, connect your
equipment. Set the TRIM control to the external devices standard
output level. If that unit has an output signal level display, it
should show 0 dB during signal peaks. For +4 dBu, turn up TRIM
slightly, for -10 dBV a bit more. Tweaking is done using the
LEVEL SET LED.
LEVEL SET
This LED lights up when the optimum operating signal level is
achieved. During normal use, this LED should only light up during
signal peaks.
2.1.2 Equalizer
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.
Fig. 2.2: The equalizer of the input channels
The upper (HIGH) and the lower band (LOW) are shelving
filters that increase or decrease all frequencies above or below
their cut-off frequency. The cut-off frequencies of the upper
2. CONTROL ELEMENTS AND CONNECTORS
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