Behringer Eurorack Pro RX1202FX - Manual (Page 7)

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EURORACK PRO RX1202FX
2.2 Stereo channels
Fig. 2.2: Connectors and controls on the stereo channels
LINE IN
Each stereo channel has two balanced line level inputs on 1/4"
connectors for left and right channels. If only the connector
marked “L” (left) is used, the channel operates in mono. The
stereo channels are designed to handle typical line level signals.
Both inputs will also accept unbalanced connectors.
TRIM
The controller works the same as the one for the mono
channels. However, the level control range is limited from +20 to
-20 dBu because the stereo channels only process line signals.
HIGH/LOW
The stereo-channel equalizer features 2 bands like the one
used for the mono channels.
MON/FX
The MON/FX buses of the stereo channels work like those of
the mono channels. Since both paths are mono, the signal of a
stereo channel is initially mixed to a summed mono signal before
reaching the MON/FX bus.
BAL
The BAL(ANCE) control determines the levels of left and right
input signals relative to each other before both signals are then
routed to the main stereo mix bus. If a channel is operated in
mono via the left line input, this control has the same function as
the PAN control used in the mono channels.
CLIP
The CLIP LEDs of the stereo channels light up when the input
signal’s level is too high. In this case, reduce the preamplification
with the TRIM controller until the LED goes out.
Channel fader
As with the mono channels, the channel fader determines the
level of the channel strip for the stereo channels in the main mix.
The second value range (+10 to -40 dBu) 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 CLIP
LED.
HIGH/LOW
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 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
and lower band are 12 kHz and 80 Hz respectively.
MON/FX
FX send buses (or AUX send buses) enable you to extract
signals from one or more channels and collect these on a bus.
You can retrieve the signal at the send connector to direct it to
an external effects device, for example. The AUX return input is
used as the return path. The send buses of the RX1202FX are
mono buses.
As the name suggests, the FX sends of the EURORACK mixing
consoles are intended to drive effects devices (reverb, delay,
etc.) and are therefore configured post-fader. This means that
the mix between dry signal and effect remains at the level
determined by the channel’s aux send, irrespective of the channel
fader setting. If this were not the case, the effects signal of the
channel would remain audible even when the fader is lowered
to zero.
In the RX1202FX, the FX send is routed directly to the built-in
effects processor. To make sure that the effects processor
receives an input signal, you shouldn’t turn this control all the
way to the left (-oo).
The MON path—as the name already implies—is meant to be
used as monitor signal path. For this application, it is important
that the controller works as pre-fader, which means it does not
rely on the fader position. For this reason the AUX send path is
unsuitable for the connection to effects devices. By using the
MON controller, you can produce a mono mix of individual signals
that can be routed over the MON plug, located on the backside,
to a headphones amplifier (e.g. MINIAMP AMP800) or a power
amplifier for monitoring.
PAN
The PAN control determines the position of the channel signal
within the stereo image. This control features a constant-power
characteristic, which means the signal is always maintained at a
constant level, irrespective of position in the stereo panorama.
CLIP
The CLIP LEDs of the mono channels illuminate when the input
signal is driven too high, which could cause distortion. If this
happens, use the TRIM control to reduce the preamp level until
the LED does not light anymore.
Channel fader
The channel fader determines the level of the channel signal in
the Main Mix.
Caution: The channel fader needs to be open so
that the effects processor receives a signal from
this channel because the FX bus to the effects
processor is switched to post-fader!
2. CONTROL ELEMENTS AND CONNECTORS