Bouncing; Input/Output Configuration; Modifications - Behringer EURODESK SX4882 User Manual

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EURODESK SX4882 User Manual
21.

Bouncing

Sometimes you want to play back from one or more tracks, route the signals to
a new track or pair of tracks, and re-record. This process is commonly referred to
as bouncing. Examples would be when reducing 4 lead vocal take tracks down
to 1, reducing 4 separate tom-tom tracks down to a stereo pair via noise gates,
putting a wild effect or EQ onto a dry signal, "comping" backing vocal tracks, etc.
On an analog tape recorder, bouncing to an adjacent track is to be avoided.
A feedback loop can be set up, since for all overdubs or bounces you will be using
the same (sync) head for both playback and record. Organize your track layout so
that any bounces you might have to do are always over at least one track.
There are no restrictions when using digital multitracks.
22.

Input/Output Configuration

Nominal level
EURODESK internal +4 dBu
XLR microphone input -
Line A input +4 dBu
Line B / tape input +4 dBu / -10 dBV
Aux sends +4 dBu
Aux returns 0 dBu
MIX-B output +4 dBu
Subgroup output +4 dBu / -10 dBV
Main mix 1/4" jack +4 dBu
+4 dBu (max. +28
Main mix XLR
dBu)
2-track out RCA +4 dBu
2-track in 1/4" jack / RCA +4 dBu
External input +4 dBu
Channel insert out +4 dBu
Channel insert in +4 dBu
Channel direct out +4 dBu
Subgroup insert out 0 dBu
Subgroup insert in 0 dBu
Main mix insert out 0 dBu
Main mix insert in 0 dBu
Control room out +4 dBu
Studio out +4 dBu
Meter / analyzer out +4 dBu
Tab. 22.1: Input/output configuration
The EXPANDER PORT inputs have a nominal level of -2 dBu (subgroup/mix)
and +2 dBu (aux).
◊
All variable gain circuits offer +15 dB (except aux returns,
which offer +20 dB).
◊
All balanced jack sockets are automatically unbalanced when using an
unbalanced jack patch lead!
23.

Modifications

◊
These modifications require you to do some soldering. Attempt only
if you are experienced in using an iron on PCBs. Otherwise, refer to
qualified personnel. After modification the warranty
becomes discretionary.
◊
Excuse us for repeating ourselves once again: BEHRINGER is not
responsible for anything what happens after you start disassembling
your EURODESK SX4882. Don't even think of it, if you make much of your
warranty privileges.
behringer.com
◊
23.1
All channel aux sends are post mute and pre fader. If you want to convert these
to post EQ, carry out the following modification to each channel. You will find a
corresponding printing on the PCB (see fig. 23.1).
1)
2)
3)
4)
Balanced Attenuation
- -
Trimpot / PAD
Yes
switch
Fig. 23.5: Modifications aux send > post EQ
Yes Trimpot
Yes Gain switch
23.2
No Pot
That's it. You've decided to use the MIX-B as a stereo aux send to FX rather
No Pot
than a separate stereo feed. You can move the tap from the A-channel from
No Pot
pre to post the channel fader as follows. Again, look for the printing on the
Yes Gain switch
PCB shown below.
No Fader
1)
Yes Fader
2)
No Fader
No No
3)
No No
4)
No No
No No
No Fader
No No
No No
No No
Fig. 23.5: Modifications MIX-B source > post fader
No No
No Pot
23.3
No Pot
No No In channel mode the meterbridge monitors the DIRECT OUT signal (post EQ,
post mute and post fader). You would prefer to see what's going on pre mute
and pre fader? Once you found the corresponding printing on the PCB, all you
have do is:
1)
2)
3)
4)
Fig. 23.5: Modifications LED meters > pre fader
Links should not be threaded into holes on the PCB. They should be
soldered to the tinned areas around the holes, and bowed slightly
upwards in between.
Aux sends > post EQ
Disconnect power supply.
Cut the "post mute" track.
Add in a "post EQ" link.
Repeat for all channels you want to be modified.
MIX-B source > post fader
Disconnect power supply.
Cut the "pre" track.
Add in a "post" link.
Repeat for all channels you want to be modified.
LED meters > pre fader
Disconnect power supply.
Cut the "line out" track.
Add in a "pre fade" link.
Repeat for all channels you want to be modified.