Behringer SX3282 Manual De Usuario

EURODESK SX3282 User Manual

Here, and in contrast to the “half-normalled” setup, the signal route of the rear 

phone jacks is interrupted when you insert a plug both into the upper and lower 

front jacks.

Fig 9.3: Patchbay mode “open”

This mode is used to connect devices such as sound modules or CD players having 

no inputs of their own. This saves space, as you can route the left and right 

outputs to one module (left - top; right - bottom) or patch two devices to one 

module (top and bottom). Effects devices and 2-tracks can be configured this 

way, so the inputs and outputs are positioned on top of each other.

Basically, the inputs are routed to the bottom and the outputs to the top 

rear-wall connectors. Avoid routing digital signals over a patchbay as the pulse 

signal used for the transmission of such signals causes heavy interference 

in analog signals. Additionally, normal patchbays change the impedance of 

the digital cable route, which causes interference in the digital path. Use the 

BEHRINGER ULTRAMATCH PRO SRC2496 specifically designed for this and other 

digital signal-related functions.
Microphone inputs operate at a level several orders of magnitude lower than line 

levels (+4 dBu or -10 dBV). Therefore, they should never be routed via a patchbay. 

In any case, patching in a field with 48 V DC (phantom power) flying about is to 

be avoided at all costs. It is best to plug mics directly into the mixing console or 

via special XLR-type wall boxes connected to the mic inputs of the console by 

good-quality balanced multicore cables (2-cond. + shield).

Fig. 9.4: Patchbay 1

Fig. 9.5: Patchbay 2

Fig. 9.6: Patchbay 3

Let us give you an example configuration that shows how you can most 

effectively use your patchbays. We assume you own a mixing console with 

16 mic/line inputs plus inserts, 8 direct outputs, 8 subgroups with 4 inserts, 4 aux 

paths with 2 stereo returns and one stereo master output including insert jacks. 

Added to this we have an 8-track recorder (digital or analog), a few pieces of 

outboard equipment (FX, dynamics & EQ’s), a CD player, tape deck, HiFi system 

and a headphones amp:
In the first eight modules of patchbay 1 the subgroup outputs are directly 

connected to the corresponding multitrack inputs. In addition to that it is also 

possible to record the signals coming from a subgroup on a different track of 

the multitrack. To save space and provide a clearly structured configuration, 

the direct outputs are connected both to the top and bottom jacks. Modules 17 & 

18 are the stereo master output, which is half-normalled and thus allows for 

recording both to the DAT recorder and the tape deck, simply by patching it 

accordingly. Modules 19 & 20 (tape deck) are open, because it does not make 

sense connecting the inputs and outputs of the tape deck. 21 & 22 are normalled 

and route the DAT recorder outputs to the 2-track inputs of the mixing console. 

So it always is possible to control the recorded data on the 2-track from the 

mixing console. The CD player and the HiFi system are connected to modules 

23 & 24, which are open, because they only serve as a source.
In patchbay 2 the first 16 modules are normalled (1 through 8 IN could also be 

used to connect the corresponding monitor inputs—if the console has a separate 

monitor section). MIDI devices such as samplers, expanders, keyboards, etc. are 

usually set up in every corner of the room. To make the cabling better structured 

we route these units to modules 9 through 16. This allows further workmanship 

of the MIDI devices at the mixing console. Modules 17 through 20 are normalled 

and have the FX inputs and the aux sends connected, 21 through 24 are also 

normalled and are patched to the two stereo aux returns with the FX outputs.