7 EURORACK UB1202/UB1002/UB802/UB502 User Manual
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 ¼" 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.
Thelter characteristics and cut-o 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 rst
taken from the stereo input before it is sent to the FX bus. The UB502 is not
equipped with FX sends.
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
mainmix.
+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 eects 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 eects device (whose input is derived from the aux sends) back into
the console. You can instead use these connectors as additional inputs, but any
eects device will then have to be brought back into the console via a normal
stereo channel. This does, however, give you the ability to use the channel EQ on
the eects return signal if you wish.
◊ When using a stereo channel as effects return path, the FX control of
the relevant channel should generally be turned fully down to avoid
undesirable feedback.
If only the left connector is used, the AUX RETURN automatically operates in
mono. Use the AUX RET(URN) control to determine how much of the eects signal
is sent to the main mix.
FX SEND
The FX SEND output (does not apply for UB502) should be connected to the input
of an external eects unit. The post-fader FX signal you created using the input
channel FX controls is sent to the eects unit via the FX SEND ouput. Use the
FXSEND control of the main section to adjust the overall send level (UB1002 and
UB1202 only).
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