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8

EURORACK  UB1222FX

-PRO

2.2 Stereo channels

2.2.1 Channel inputs

Fig. 2.5: Stereo channel inputs

Each  stereo  channel  features  two  line-level  inputs  on  1/4"

connectors for left and right channels. Channels 9/10 and 11/12

can also be used in mono if you only use the connector labeled

“L.”

Both channels 5/6 and 7/8 feature an additional balanced XLR

input for microphones with ava48 V phantom power.

All stereo channel strips have a TRIM control for level setting.

In those channels in which a mic input is present in the channel,

the TRIM control has two scales: just like in the mono channels,

there is a 0 to +40 dB scale that shows the preamplification of

the mic signal; the +20 to -20 dB scale shows the sensitivity for

the corresponding input level that is applied to the line input.

Both  inputs  can  also  be  used  with  balanced  or  unbalanced

connectors.

2.2.2 Equalizer stereo channels

The equalizer of the stereo channels is, of course, stereo. The

filter  characteristics  and  crossover  frequencies  are  the  same

as  those  of  the  mono  channels.  A  stereo  equalizer  is  always

preferable to two mono equalizers if frequency correction of a

stereo signal is needed. There is often a discrepancy between

the settings of the left and the right channels when using separate

equalizers.

2.2.3 Aux sends stereo channels

In principle, the aux sends of the stereo channels function in

just the same way as those of the mono channels. As aux send

paths are always mono, the signal on a stereo channel is first

summed to mono before it reaches the aux bus.

2.2.4 Balance, mute switch and channel fader

BAL

The  function  of  the 

BAL

(ANCE)  control  corresponds  to  the

PAN control in the mono channels.

The balance control determines the relative proportion between

the left and right input signals before both signals are routed to

the main stereo mix bus.

The MUTE switch, MUTE LED, CLIP LED and channel fader

function in the same way as the mono channels.

2.3 Connector panel and main section

Whereas  it  was  useful  to  trace  the  signal  flow  from  top  to

bottom in order to gain an understanding of the channel strips,

we now look at the mixing console from left to right. The signals

are, so to speak, collected from one point on each of the channel

strips and then routed to the main section all together.

2.3.1 Monitor send and FX send channels

Fig. 2.6: Aux send controls of the main section

A channel signal is routed to the MON(ITOR) send bus if the

MON control is turned up on the corresponding channel.

MON SEND

The aux send control 

MON

 

SEND

 acts as master control for

the monitor bus and determines the level of the summed signal

that is taken from the mixer via the MON SEND connector and

that can for example be fed to an amplifier for monitor purposes.

Using the audio signal from this output, you can also feed a

subwoofer if you don’t require stage monitors. To this end, you

should implement a crossover in your signal path pre-subwoofer

and pre-amplifier, so that only low frequencies are fed into the

subwoofer. You can achieve the same effect by using the built-

in graphical equalizer. Lower all frequencies above 160 Hz and

assign the equalizer to “Monitor”.

+

When  you  use  the  MAIN  MIX  fader  to  reduce  the

overall  volume,  keep  in  mind  that  the  subwoofer  is

still  receiving  a  signal!

FX TO MON

You can use this control to insert an effects signal from the

built-in effects processor to your monitor mix. Of course, to do

this, your effects processor must first receive a signal, i.e. the

FX controls in the channel strips must be turned up, and the FX

SEND fader (see fig. 2.6) hast to be open.

MON MUTE

If the 

MON MUTE

 switch is pressed, the monitor bus is muted,

i.e. there is no signal at the MON SEND connector.

FX SEND

The 

FX SEND

 fader determines the overall level of the effects

bus.  Both  external  effects  processors  (via  the  FX  SEND

connector) and the built-in processor only receive an input signal

if this control is open.

FX TO MAIN

Use the 

FX TO MAIN

 control to feed the effects signal into the

main mix. If the control is turned all the way to the left, no effects

signal can be heard.

FX MUTE

If  the 

FX  MUTE

  switch  is  pressed,  the  effects  channel  is

muted, i.e. no signal is present at the FX SEND connector and the

effects processor no longer receives an input signal.

2. CONTROL ELEMENTS AND CONNECTORS

All manuals and user guides at all-guides.com

Summary of Contents for Eurorack UB1222FX-PRO

Page 1: ...Version 1 0 October 2003 User s Manual ENGLISH EURORACK UB1222FX PRO All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 2: ...oduce heat 9 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect ...

Page 3: ...trim control s Effective extremely musical 3 band EQ plus switchable low cut filter on all mono channels s Inserts on each mono channel for flexible connection of outboard equipment s 12 high headroom line inputs s Standby switch mutes all mic channels during breaks while background music is provided via CD tape or line inputs s State of the art 4580 operational amplifiers provide lowest noise and...

Page 4: ...e of those people who have devoted themselves body and soul to your chosen area and no doubt this has trans formed you into an expert in your field Well for over 30 years my passion has been music and electronics This not only led me to establish BEHRINGER but also enabled me to convey and share my enthusiasm with my employees During all the years that I ve been involved with studio technology and...

Page 5: ...x Direct Injection or the output of a sound card or a keyboard often have to be adjusted to the operating level of your mixing console Frequency response correction Using the equalizers found in each channel strip you can simply quickly and effectively adjust the way a signal sounds Effects mixing In addition to the effects processor contained in your mixer using the insert connectors on the mono ...

Page 6: ... 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...

Page 7: ...t signal you shouldn t turn this control all the way to the left oo Don t have the FX MUTE switch pressed and you should also not have the FX SEND fader pulled down 2 1 4 Pan mute switch and channel fader Fig 2 4 Channel fader and additional control elements PAN The PAN control determines the position of the channel signal within the stereo image This control features a constant power characterist...

Page 8: ...tanding of the channel strips we now look at the mixing console from left to right The signals are so to speak collected from one point on each of the channel strips and then routed to the main section all together 2 3 1 Monitor send and FX send channels Fig 2 6 Aux send controls of the main section A channel signal is routed to the MON ITOR send bus if the MON control is turned up on the correspo...

Page 9: ...ol of the channel being used as an effects return should be turned fully counter clockwise otherwise feedback problems can occur 2 3 4 CD tape return channel voice canceller and connection socket Fig 2 9 CD tape return channel This channel intended especially for connecting stereo signal sources CD players DAT recorders or even sound cards features a particularly practical feature the VOICE CANCEL...

Page 10: ...amplifiers Often limiters are already built into active crossovers e g BEHRINGER SUPER X PRO CX2310 and ULTRADRIVE PRO DCX2496 Active crossovers are implemented directly before the power amplifier and they divide the frequency range into several segments that are first amplified in the amplifiers and then passed onto the corresponding loudspeakers Recording For mastering using a stereo compressor ...

Page 11: ... the main mix and inactive on the monitor mix When the switch is depressed the equalizer is active in mono on the monitor mix and inactive on the main mix 2 5 Rear view of UB1222FX PRO Fig 2 16 Voltage supply and fuse FUSE HOLDER IEC MAINS RECEPTACLE The console is connected to the mains via the cable supplied which meets the required safety standards Blown fuses must only be replaced by fuses of ...

Page 12: ...ssor is muted via the footswitch In chapter 4 2 you will find an illustration showing how to connect your footswitch correctly Fig 3 3 Digital Effects module and XPQ Surround Function control elements LEVEL The LED level meter on the effects module should display a sufficiently high level Take care to ensure that the clip LED only lights up at peak levels If it is lit constantly you are overloadin...

Page 13: ...mono plugs or ensure that ring and sleeve are bridged inside the stereo plug or pins 1 3 in the case of XLR connectors Caution You must never use unbalanced XLR connectors pins 1 and 3 connected on the MIC inputs if you intend to use the phantom power supply Fig 4 2 XLR connections Fig 4 3 1 4 TS connector Fig 4 4 1 4 TRS connector Fig 4 5 Insert send return 1 4 TRS connector Fig 4 6 1 4 TRS conne...

Page 14: ... Low 80 Hz 15 dB Mid 2 5 kHz 15 dB High 12 kHz 15 dB Low cut 80 Hz 18 dB oct EQ stereo channels Low 80 Hz 15 dB Mid 2 5 kHz 15 dB High 12 kHz 15 dB MON FX send Type 1 4 TS connector unbalanced Impedance approx 120 Ω Max output level 22 dBu Aux returns Type 1 4 TRS connector unbalanced Impedance approx 10 kΩ Max input level 22 dBu Main outputs Type XLR electronically balanced Impedance approx 240 Ω...

Page 15: ...ons tubes and similar parts 4 Damages defects caused by the following conditions are not covered by this warranty s improper handling neglect or failure to operate the unit in compliance with the instructions given in BEHRINGER user or service manuals s connection or operation of the unit in any way that does not comply with the technical or safety regulations applicable in the country where the p...

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