User Guide
Allen & Heath 16 ZED-14, 18 & 24 User Guide
MONO INPUT CHANNEL
Auxes 1 & 2
Each of these controls sends a signal to an auxiliary bus. The signal is
sourced pre-fade which means that the level is independent of, and unaffect-
ed by the fader. Auxes 1 & 2 are primarily used for foldback monitoring pur-
poses, as the fader does not affect the level. They can also be used as feeds
for recording and are available sources to the USB interface for this pur-
pose.
These sends are affected by the Mute switch, so muting the channel will also
mute the Aux sends.
The control varies the signal level to the bus from off (fully attenuated) to
+6dB, with unity gain at the arrow.
There are master level controls for the Aux 1 & 2 outputs situated in the
master section of the mixer.
Auxes 3 & 4
These are post-fade sends, which means that the signals are affected by the
channel fader. Primarily used for effects sends, the aux signal will reduce if
the fader is pulled down so keeping the correct proportion of the effect.
Muting the channel will also mute the Aux sends, and the send controls have
6dB gain fully clockwise.
There are no master level controls for Aux 3 & 4 outputs.
PAN
The pan control adjusts how the signal from the mono input channel is
shared between the left and right buses and subsequently the main stereo
outputs. Set to the mid position, equal amounts of signal are fed to left and
right, with pan set to L, none is sent to the Right bus.
PFL Switch & PK! LED
The PFL (Pre-Fade Listen) switch sends the channel signal to the PFL bus
and subsequently to the headphones and the main L R meters. Used for
checking the audio signal before raising the fader or un-muting the channel.
The PK! LED illuminates dimly to indicate the PFL switch is pressed, and
brightly to indicate the channel signal is within 5dB of clipping.
Mute Switch
This mutes or cuts the signal to the left & right buses and the Aux buses. A
rectangular LED illuminates to show the Mute switch is pressed.
Fader
The 100mm fader affects the level of the channel signal to the left & right
buses and Auxes 3 & 4. There is 10dB of gain at the top and the unity gain
position is marked by “0”.
OO
30
OO 10
-30
-20
-5
0
5
-10
ST
RTN
To LR
To 7-8
OO 10
-30
-20
-5
0
5
-10
2TRK
RTN
OO 10
-30
-20
-5
0
5
-10
USB
RTN
-30
-20
-5
5
0
OO
-10
10
IN
-15 +15
12kHz
HF
-15 +15
80Hz
LF
OO +6
AUX1
PRE
OO +6
AUX2
PRE
OO +6
AUX3
OO +6
AUX4
POST
L R
BAL
=
PK !
PFL
STEREO
MUTE
PK !
PFL
L
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
R
PFL ACTIVE
MIN MAX
PHONES
AUX1
AUX2
2TRK RTN
USB RTN
STEREO
OO +6
ALT
OUT
MONITOR
LR
OO +6
AUX1
MASTER
OO +6
AUX2
MASTER
5
20
10
5
0
10
ON
To LR
To 9-10
ON
To LR
To 11-12
ON
ST3
USB
AUX1-2
AUX 3-4
LR PRE
UP=LR post
SENDRETURN
L R
BAL
=
MUTE
-30
-20
-5
5
0
OO
-10
10
IN
-15 +15
12kHz
HF
-15 +15
80Hz
LF
OO +6
AUX1
PRE
OO +6
AUX2
PRE
OO +6
AUX3
OO +6
AUX4
POST
L R
BAL
=
PK !
PFL
STEREO
ST2
MUTE
-30
-20
-5
5
0
OO
-10
10
IN
-15 +15
12kHz
HF
-15 +15
80Hz
LF
OO +6
AUX1
PRE
OO +6
AUX2
PRE
OO +6
AUX3
OO +6
AUX4
POST
L R
BAL
=
PK !
PFL
STEREO
ST1
MUTE
OO
30
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
100Hz
12kHz
-15 +15
HF
120Hz 4k
200
2k
650
-15
HM
+15
-15 +15
80Hz
LF
5
10
20
5
0
10
OO +6
AUX1
PRE
OO +6
AUX2
PRE
OO +6
AUX3
OO +6
AUX4
POST
L R
PAN
=
PK !
PFL
MUTE
POST
PRE
LR
-30
-20
-5
5
0
OO
-10
10
IN
-15 +15
12kHz
HF
-15 +15
80Hz
LF
OO +6
AUX1
PRE
OO +6
AUX2
PRE
OO +6
AUX3
OO +6
AUX4
POST
STEREO
ST4
ST2 IN
L/M
R
ST3 IN
L/M
R
L/M
R
L
R
POWER
48V
INSERT R
AUX1 OUT
PHONES
MAIN OUT
INSERT
6
ST RTN
L
R
2TRK RTN
L
R
REC OUT
L
R
ALT OUT
L
R
INSERT
5
INSERT
4
INSERT
3
INSERT
2
INSERT
1
100Hz
12kHz
-15 +15
HF
-15
HM
+15
OO +6
AUX1
PRE
OO +6
AUX2
PRE
OO +6
AUX3
OO +6
AUX4
POST
L R
PAN
=
PK !
PFL
MUTE
100Hz
12kHz
-15 +15
HF
-15
HM
+15
OO +6
AUX1
PRE
OO +6
AUX2
PRE
OO +6
AUX3
OO +6
AUX4
POST
L R
PAN
=
PK !
PFL
MUTE
100Hz
12kHz
-15 +15
HF
-15
HM
+15
OO +6
AUX1
PRE
OO +6
AUX2
PRE
OO +6
AUX3
OO +6
AUX4
POST
L R
PAN
=
PK !
PFL
MUTE
100Hz
12kHz
-15 +15
HF
-15
HM
+15
OO +6
AUX1
PRE
OO +6
AUX2
PRE
OO +6
AUX3
OO +6
AUX4
POST
L R
PAN
=
PK !
PFL
MUTE
100Hz
12kHz
-15 +15
HF
-15
HM
+15
OO +6
AUX1
PRE
OO +6
AUX2
PRE
OO +6
AUX3
OO +6
AUX4
POST
L R
PAN
=
PK !
PFL
MUTE
1 2 3 4 5 6 7-8 9-10 11-12 13-14 RL
0
0
0
PHANTOM POWER
ALLEN
HEATH
LINE LINE LINE LINE LINE LINE
MIC MIC MIC MIC MIC MIC
ST4 INST1 IN
L/M
R
AUX2 OUT
AUX3 OUT
AUX4 OUT
INSERT L
MONO OUT
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
-15 +15
80Hz
LF
-15 +15
80Hz
LF
-15 +15
80Hz
LF
-15 +15
80Hz
LF
-15 +15
80Hz
LF
500
1k
3k
120Hz 4k
200
2k
650
500
1k
3k
120Hz 4k
200
2k
650
500
1k
3k
120Hz 4k
200
2k
650
500
1k
3k
120Hz 4k
200
2k
650
500
1k
3k
120Hz 4k
200
2k
650
500
1k
3k
POST POST POST POST POST POST POST POST POST POST
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
&