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EURORACK UB1204-PRO/UB1204FX-PRO
Fig. 2.2: The equalizer of the input channels
The upper (HI) and the lower band (LO) 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 80Hz respectively. The mid band is
configured as a peak filter with a center frequency of 2.5 kHz.
2.1.3 Aux sends
Fig. 2.3: The AUX SEND controls in the channel strips
Aux sends take signals via a control from one or more channels
and sum these signals to a so-called bus. This bus signal is sent
to an aux send connector and then routed, for example, to an
active monitor speaker or an external effects device. The return
from an external effect can then be brought back into the console
via the aux return connectors.
For situations which require effects processing, the aux sends
are usually switched post-fader so that the effects volume in a
channel corresponds to the position of the channel fader. If this
were not the case, the effects signal of the channel would
remain audible even when the fader is turned to zero. When
setting up a monitor mix, the aux sends are generally switched
to pre-fader; i.e. they operate independently of the position of
the channel fader.
Both aux sends are mono, are sourced after the equalizer and
offer up to +15 dB gain.
+ If you press the MUTE/ALT 3-4 switch, aux send 1 is
muted, provided that it is switched post-
fader. However, this does not affect the aux send 2
of the UB1204FX-PRO.
AUX 1 (MON)
In the UB1204FX-PRO, aux send 1 can be switched pre-fader
and is thus particularly suitable for setting up monitor mixes. In
the UB1204-PRO, the first aux send is labeled MON and is
permanently switched pre-fader.
PRE
When the PRE switch is pressed, aux send 1 is sourced pre-
fader.
AUX 2 (FX)
The aux send labeled FX is for sending to effects devices and
is thus set up to be post-fader.
In the UB1204FX-PRO, the FX send is routed directly to the
built-in effects processor.
+ If you wish to use the internal effects processor,
the STEREO AUX RETURN 2 connectors should not
be in use.
+ UB1204FX-PRO: you can also connect an external
effects processor to aux send 2, however the
internal effects module will be muted.
2.1.4 Routing switch, solo and channel fader