User`s manual

6
EURORACK UB502/UB802/UB1002/UB1202
2.1.3 FX sends, panorama and level adjustment
Fig. 2.3: The FX send/panorama/level controls
FX (UB802/UB1002/UB1202 only)
FX sends (or AUX sends) enable you to feed signals via a
variable control from one or more channels and sum these signals
to a bus. The bus appears at the consoles FX send output and
can be fed from there to an external effects device. The return
from the effects unit is then brought back into the console on the
aux return connectors (UB802) or normal channel inputs. Each
FX send is mono and features up to +15 dB gain.
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.
PA N
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.
LEVEL
The LEVEL control determines the level of the channel signal
in the main mix.
PEAK
The PEAK LEDs of the mono channels illuminate when the
input signal is driven too high, which could cause distortion. If
this happens, use the GAIN control to reduce the preamp level
until the LED does not light anymore.
2.2 Stereo channels
2.2.1 Stereo line inputs
Fig. 2.4: Stereo line inputs
LINE IN
Each stereo channel has two balanced line level inputs on 1/4"
jacks for left and right channels. If only the jack 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 jacks.
2.2.2 Equalizer stereo channels (UB802)
The EURORACK UB802 features a stereo 3-band EQ in each
stereo channel. The filter characteristics and cut-off frequencies
are the same as those in the mono channels.
Fig. 2.5: The equalizer of the stereo input channels
A stereo EQ is highly preferable to two mono equalizers. when
working on a stereo signal, as two separate EQs will usually produce
an unwanted discrepancy between the left and right channels.
2.2.3 FX sends, balance and level adjustment
Fig. 2.6: The FX send/balance/level controls
FX
The FX sends of the stereo channels function similar to those
of the mono channels. However, since the FX send buses are
both mono, a mono sum is first taken from the stereo input before
it is sent to the FX bus. The UB502 is not equipped with FXsends.
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.
LEVEL
The LEVEL control determines the volume of the channel being
sent to the main mix.
+4/-10
The stereo inputs of the EURORACK UB1002 and UB1202
have an input sensitivity switch which selects between +4 dBu
and -10 dBV. At -10dBV (home-recording level), the input is
more sensitive (requires less level to drive it) than at +4 dBu
(studio level).
2.3 Connector panel and main section
2.3.1 Send/return effects path
Fig. 2.7: FX send/return connectors
Fig. 2.8: FX send/return controls
STEREO AUX RETURN
UB802 only: the STEREO AUX RETURN connectors are used
to bring the output of the external effects device (whose input is
derived from the aux sends) back into the console. You can
instead use these connectors as additional inputs, but any effects
2. CONTROL ELEMENTS AND CONNECTORS