Behringer SRC2000 Manual do Utilizador descarregar pdf (Página 21)

EURORACK MX1804X

In patchbay

, modules 1 through 16 are for the channel insert. These modules are half-normalled, so that

you have an additional route for the channel signals. The same applies to the insert paths of the su/jointfilesconvert/360498/bgroups and

the master output. The headphones amp is connected to 23 & 24, which are normalled and connected to the

control room outputs of the mixing console. Of course, you can also use pre-fader aux paths for the headphones

mix.

Patchbay

manages the dynamics and frequency-processing devices in an open configuration (modules 1

through 16). Multigates and Compressors should be used here, in particular. Modules 17 through 24 are used

to provide a “parallel split”, i.e. two modules are patched to each other on the rear with one patch cord, so that

you can split up a signal applied on the front panel to several destinations. These modules have a parallel

configuration.

It should be noted that patchbays should be placed one below the other in such a way that the patch cords

won’t hang all over the patchbays. In our example you don’t have to span great distances, for instance, to patch

the dynamics and EQ’s to the insert paths.

4.3.7 Looming problems

Loom wiring is an art unto itself, and it is worth taking time out to get it right. First off, it is important to avoid

earth loops (a looped wire acts an aerial, picking up hum and electromagnetic radiation). Think of a tree. Every

part of that tree is connected to every other part, but only by one route. That’s how the total earth picture for

your entire studio should look. Don’t take the earth off your power cable plug to reduce audible

50 Hz mains hum. Rather you should be looking at disconnecting the signal screen somewhere (one or several

audio cables).

It is good practice to ensure that all screens are commoned at the patchbay, in which case all unearthed

equipment would pick up earth from this point via a single screen (more than one route = an earth loop), while

mains-earthed equipment would have all screens cut at the equipment end.

Some quality equipment has an independent signal and mains earth. In this case at least one screen should

carry earth to the equipment. Sometimes the only way to find out is “suck and see”.

Take care to ensure that using the patchbay does not disturb the studio’s earth architecture. Always use short

as possible patch leads with the screen connected at both ends.

Having designed mains hum out of the system, make up your cable looms from the patchbays outwards, and

use cable ties, flexible sheaths, multicores, etc. to keep the back of your racks tidy.

4.4 Expanding

When the EURORACK is your main mixer, you may find that you run out of inputs as your system expands.

It is possible to expand your mixing system by combining two or more mixers.

Adding extra line inputs to your EURORACK

A small line mixer (such as the BEHRINGER ULTRALINK PRO MX882 channel mixer/splitter/signal router)

can inexpensively add extra line inputs to your console. With the ULTRALINK PRO, any stereo, line-level input

on your EURORACK can become a stereo line input plus a further 6 pan-able mono line inputs. Great for

adding tape monitor returns etc.

Linking two EURORACKs

Simply take the main mix output of one, and feed it into a suitable stereo line input of the second.

Linking the EURORACK to a master console

Feed any or all of the main mix, Alt 3-4 and aux outputs from your EURORACK into separate channels of the

master console. The aux outputs should be routed only to individual aux send buses on the master console.

Now the aux sends from the EURORACK can access effects currently used by the master console.

The EURORACK outputs are essentially submixes of several channels of sound, and are therefore likely to be

considerably higher than the typical source signals (coming from microphones, MIDI instruments or tape) seen

by the remaining channels of the master console or the 2nd EURORACK.

4. APPLICATIONS

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