Allen&Heath WZ12 2DX - Manual (Page 18)

WZ16:2DX AND WZ12:2DX U SER G UIDE 18
A-B O
UTPUT
The A-B output is an additional stereo/mono output that can be uniquely
configured as either a separately controllable mix output, or a local
loudspeaker monitor feed.
MODE SWITCH - This switch is recessed under the panel to prevent
accidental operation. It is operated using a pen tip or similar pointed object.
In the normal up position A-B follows the main L-R mix. When pressed A-B
follows the monitor switchbank + PFL to become a ‘local’ monitor in addition to
the headphones.
POST/PRE - This recessed switch selects whether the L-R signal fed to A-B
is sourced pre or post the L-R faders.
LEVEL - Adjust the output level using this control. Up to +10dB of boost is
available above the nominal ‘0’ position.
MONO - Sums L+R into mono. When A-B is configured as an additional mix
output the MONO switch provides a mono output ideal for centre fill or sub-
bass loudspeaker systems, or mono recording and broadcast feeds. When A-
B is configured as a local monitor the MONO switch lets you check the mono
compatibility of the selected mono source. Alternatively you can feed a local
mono speaker monitor such as an engineers listen wedge.
Here are a few applications of the versatile A-B output:
SINGLE
DUAL
SELECT
MONO
20
30
5
10
0
5
R
10
L
5-6
6
3-4
4
3
5
1-2
2
1
LOCAL MONITOR
MONO OUT
ALT L-R OUT
+ 3
+ 6
+ 9
-16
-20
-12
-9
-6
-3
-30
L R
PFL
LEV
0
+ 16
POWER ON
48V ON
PHANTOM
O O
OO
0
+ 6 OO
0
+ 6
O + 6
0
O O + 6
0
O
OO
0
+ 6
0
+ 4 OO
0
+ 4 OO
0
+ 4 OO
0
+ 4 OO
+ 4 OO
+ 4 OO
+ 10 O O
2 8
0
1
0 1
9
4
3 7
5 6
0
L-R
1
AUX
2
AUX
1
AUX
L-R
POST
PRE
AUX
6
AUX
5
POST
4
AUX
3
AUX
2
AUX
1
AUX
PRE
EFFECTS
ALL UP = L-R
EFFECTS
BANK
10
9
13
12
11
16
15
14 6
8
7
5
4
3
2
1
AUX5 = 1-16
AUX5 = 1-8
AUX6 = 9-16
MODE
With effects by
:=
49=5 ';
L-R stereo live recording / broadcast
mode = up, set pre-fade
level trim to match recorder, L and R out
Mono live recording / broadcast
mode = up, set pre-fade, mono selected
level trim to match recorder, 2x M out
Additional L-R zone speakers
mode = up, set pre or post fade
level trim to balance speakers, L and R out
L-R delay fill speakers
mode = up, set post-fade
level trim to balance to main, L and R out
Mono centre fill speaker
mode = up, set post-fade, mono selected
level trim to balance to main, 2x M out
Sub-bass speaker
mode = up, set post-fade, mono selected
level trim to balance to main, 2x M out
Local stereo speaker monitor
mode = down
separate monitor level, L and R out
Local floor listen wedge monitor
mode = down, mono selected
separate monitor level, 2x M out
A-B