This product is warranted to be free from defects in materials or workmanship for
period of one year from the date of purchase by the original owner.
To ensure a high level of performance and reliability for which this equipment has
been designed and manufactured, read this User Guide before operating. In the
event of a failure, notify and return the defective unit to ALLEN & HEATH Limited or
its authorised agent as soon as possible for repair under warranty subject to the
following conditions
Conditions Of Warranty
The equipment has been installed and operated in accordance with the instructions in
this User Guide.
The equipment has not been subject to misuse either intended or accidental, neglect,
or alteration other than as described in the User Guide or Service Manual, or approved
by ALLEN & HEATH.
Any necessary adjustment, alteration or repair has been carried out by ALLEN &
HEATH or its authorised agent.
This warranty does not cover fader wear and tear.
The defective unit is to be returned carriage prepaid to ALLEN & HEATH or its
authorised agent with proof of purchase.
Units returned should be packed to avoid transit damage.
In certain territories the terms may vary. Check with your ALLEN & HEATH agent for
any additional warranty which may apply.
Restrictions: Software in this product is confidential copyrighted information of TCAT and Allen & Heath
and title is retained by TCAT and/or its licensors. The customer shall not modify, decompile, disassemble,
decrypt, extract or otherwise reverse engineer the software. Please read the End User Licence Agreement on
Allen & Heath's website for the use of software in and to support this product.
Export Regulations: Software, including technical data, is subject to U.S. export control laws, including the
U.S. Export Administration Act and its associated regulations, and may be subject to export or import regulations in other countries. The Customer agrees to comply strictly with all such regulations and acknowledges
that it has the responsibility to obtain licenses to export, re-export, or import software.
This product complies with the European Electro magnetic Compatibility directives 89/336/
EEC & 92/31/EEC and the European Low Voltage Directives 73/23/EEC & 93/68/EEC.
This product has been tested to EN55103 Parts 1 & 2 1996 for use in Environments E1, E2, E3, and E4 to
demonstrate compliance with the protection requirements in the European EMC directive 89/336/EEC.
During some tests the specified performance figures of the product were affected. This is considered
permissible and the product has been passed as acceptable for its intended use. Allen & Heath has a strict
policy of ensuring all products are tested to the latest safety and EMC standards. Customers requiring
more information about EMC and safety issues can contact Allen & Heath.
NOTE: Any changes or modifications to the console not approved by Allen & Heath could
void the compliance of the console and therefore the users authority to operate it.
Kernick Industrial Estate, Penryn, Cornwall, TR10 9LU, UK
http://www.allen-heath.com
Allen & Heath 3 ZED-R16 User Guide
PACKED ITEMS
Check that you have received the following:
MIC
MICMICMICMICMICMICMICMICMICMICMICMICMICMICMIC
LINE
IN
LINE
IN
LINE
IN
LINE
IN
LINE
IN
LINE
IN
LINE
IN
LINE
IN
LINE
IN
LINE
IN
LINE
IN
LINE
IN
LINE
IN
LINE
1
23456789101112 13 1415 16
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
48V
48V
48V
48V
48V
48V
48V
48V
0
0
0
0
0
30
30
30
40
40
20
GAIN
HF
12k
-15 +15
Q
0.8
2k
1k
F
700
HM
400Hz
G
-15 +15
Q
0.8 6
120
60
F
30
LM
18Hz
G
-15 +15
80Hz
-15LF+15
AUX1
PRE
OO
AUX2
PRE
OO
AUX3
POST
OO
AUX4
POST
OO
=
PAN
L R
HI
SIG
10
L-R
5
0
DIG SND
Post-EQ
DIG RET
Pre-INS
10
DIG RET
Post-EQ
FADER
=MIDI
40
20
20
GAIN
GAIN
50
50
50
6040-14 6
6040-14 6
6040-14 6
HPF
HPF
HPF
100Hz
100Hz
100Hz
HF
HF
12k
12k
-15 +15
-15 +15
1111111111111111
Q
Q
0.8
0.8
6
6
6
2k
2k
4k
1k
4k
1k
4k
F
F
6k
700
6k
700
6k
HM
HM
18k
1111111111111111
300
600
1k
EQ IN
+6
+6
+6
+6
MUTE
PFL
12345678910 1112 1314 1516
5
OO
HM
400Hz
18k
400Hz
18k
G
G
-15 +15
-15 +15
Q
Q
0.8 6
0.8 6
120
120
60
60
300
300
F
F
30
600
30
600
LM
LM
LM
18Hz
1k
18Hz
1k
G
G
-15 +15
-15 +15
80Hz
80Hz
-15LF+15
-15LF+15
EQ IN
EQ IN
AUX1
AUX1
AUX1
PRE
PRE
+6
OO
+6
OO
AUX2
AUX2
AUX2
PRE
PRE
OO
OO
+6
+6
AUX3
AUX3
AUX3
POST
POST
OO
OO
+6
+6
AUX4
AUX4
AUX4
POST
POST
OO
OO
+6
+6
=
=
PAN
PAN
L R
L R
MUTE
MUTE
PFL
PFL
HI
HI
SIG
SIG
10
10
L-R
L-R
L-R
5
5
0
0
5
5
10
10
OO
OO
0
30
30
30
40
40
20
GAIN
HF
12k
-15 +15
Q
0.8
2k
1k
F
700
400Hz
G
-15 +15
Q
0.8 6
120
60
F
30
18Hz
G
-15 +15
80Hz
-15LF+15
PRE
OO
PRE
OO
POST
OO
POST
OO
=
PAN
L R
HI
SIG
10
5
0
10
40
20
20
GAIN
GAIN
50
50
50
6040-14 6
6040-14 6
6040-14 6
HPF
HPF
HPF
100Hz
100Hz
100Hz
HF
HF
12k
12k
-15 +15
-15 +15
Q
Q
0.8
0.8
6
6
6
2k
2k
4k
1k
4k
1k
4k
F
F
6k
700
6k
700
6k
HM
HM
18k
400Hz
18k
400Hz
18k
G
G
-15 +15
-15 +15
Q
Q
0.8 6
0.8 6
120
120
60
60
300
300
300
F
F
600
30
600
30
600
LM
LM
1k
18Hz
1k
18Hz
1k
G
G
-15 +15
-15 +15
80Hz
80Hz
-15LF+15
-15LF+15
EQ IN
EQ IN
EQ IN
AUX1
AUX1
PRE
PRE
+6
+6
OO
+6
OO
AUX2
AUX2
PRE
PRE
OO
OO
+6
+6
+6
AUX3
AUX3
POST
POST
OO
OO
+6
+6
+6
AUX4
AUX4
POST
POST
OO
OO
+6
+6
+6
=
=
PAN
PAN
L R
L R
MUTE
MUTE
MUTE
PFL
PFL
PFL
HI
HI
SIG
SIG
10
10
L-R
L-R
5
5
0
0
5
5
5
10
10
OO
OO
OO
48V
0
0
0
30
30
30
40
40
20
20
GAIN
HF
12k
HM
LM
80Hz
AUX1
PRE
AUX2
PRE
AUX3
POST
AUX4
POST
PAN
L-R
20
GAIN
GAIN
50
50
6040-14 6
6040-14 6
HPF
HPF
100Hz
100Hz
HF
HF
12k
12k
-15 +15
-15 +15
-15 +15
Q
Q
Q
0.8
0.8
0.8
6
6
2k
2k
1k
F
700
400Hz
G
-15 +15
Q
0.8 6
60
F
30
18Hz
G
-15 +15
-15LF+15
OO
OO
OO
OO
HI
SIG
2k
4k
1k
4k
1k
F
F
6k
700
6k
700
HM
HM
18k
400Hz
18k
400Hz
G
G
-15 +15
-15 +15
Q
Q
0.8 6
0.8 6
120
120
120
60
60
300
300
F
F
600
30
600
30
LM
LM
1k
18Hz
1k
18Hz
G
G
-15 +15
-15 +15
80Hz
80Hz
-15LF+15
-15LF+15
EQ IN
EQ IN
AUX1
AUX1
PRE
PRE
+6
+6
OO
OO
AUX2
AUX2
PRE
PRE
OO
OO
+6
+6
AUX3
AUX3
POST
POST
OO
OO
+6
+6
AUX4
AUX4
POST
POST
OO
OO
+6
+6
=
=
=
PAN
PAN
L R
L R
L R
MUTE
MUTE
PFL
PFL
HI
HI
SIG
SIG
10
10
10
L-R
L-R
5
5
5
0
0
0
5
5
5
10
10
10
OO
OO
OO
INSERT
48V
48V
0
0
30
30
40
40
40
20
20
GAIN
GAIN
50
50
50
6040-14 6
6040-14 6
6040-14 6
HPF
HPF
HPF
100Hz
100Hz
100Hz
HF
HF
12k
12k
-15 +15
-15 +15
Q
Q
0.8
0.8
6
6
6
2k
2k
4k
1k
4k
1k
4k
F
F
6k
700
6k
700
6k
HM
HM
18k
400Hz
18k
400Hz
18k
G
G
-15 +15
-15 +15
Q
Q
0.8 6
0.8 6
120
120
60
60
300
300
300
F
F
600
30
600
30
600
LM
LM
1k
18Hz
1k
18Hz
1k
G
G
-15 +15
-15 +15
80Hz
80Hz
-15LF+15
-15LF+15
EQ IN
EQ IN
EQ IN
AUX1
AUX1
PRE
PRE
+6
+6
OO
+6
OO
AUX2
AUX2
PRE
PRE
OO
OO
+6
+6
+6
AUX3
AUX3
POST
POST
OO
OO
+6
+6
+6
AUX4
AUX4
POST
POST
OO
OO
+6
+6
+6
=
=
PAN
PAN
L R
L R
MUTE
MUTE
MUTE
PFL
PFL
PFL
HI
HI
SIG
SIG
10
10
L-R
L-R
5
5
0
0
5
5
10
10
OO
OO
IN
INSERT
INSERT
48V
48V
48V
0
0
30
30
40
40
20
20
GAIN
GAIN
GAIN
50
50
6040-14 6
6040-14 6
HPF
HPF
100Hz
100Hz
HF
HF
HF
12k
12k
12k
-15 +15
-15 +15
Q
Q
0.8
0.8
6
6
2k
2k
1k
4k
1k
4k
F
F
700
6k
700
6k
HM
HM
HM
400Hz
18k
400Hz
18k
G
G
-15 +15
-15 +15
Q
Q
0.8 6
0.8 6
120
120
60
60
300
300
F
F
30
600
30
600
LM
LM
LM
18Hz
1k
18Hz
1k
G
G
-15 +15
-15 +15
80Hz
80Hz
80Hz
-15LF+15
-15LF+15
EQ IN
EQ IN
AUX1
AUX1
AUX1
PRE
PRE
PRE
+6
OO
+6
OO
AUX2
AUX2
AUX2
PRE
PRE
PRE
OO
OO
+6
+6
AUX3
AUX3
AUX3
POST
POST
POST
OO
OO
+6
+6
AUX4
AUX4
AUX4
POST
POST
POST
OO
OO
+6
+6
=
=
PAN
PAN
PAN
L R
L R
MUTE
MUTE
PFL
PFL
HI
HI
SIG
SIG
10
10
L-R
L-R
L-R
5
5
0
0
5
5
10
10
OO
OO
ZED-R16 MIXER
STUDIO OUT 1
L
R
ST2
LEV
HF
12k
80Hz
AUX1
PRE
AUX2
PRE
BAL
LEV
ST2
-10
-20
-30
OO
-15 +15
-15LF+15
OO
OO
L R
-10
-20
-30
OO
ST3 L
ST3 R
ST3
-5
LEV
0
5
10
+6
+6
=
-5
LEV
0
5
10
PFL
L-R
MIDI control
L
R
-5
-10
0
-20
5
-30
10
OO
PFL
L-R
MIX L-R
AUX 1
AUX 2
AUX 3
AUX 4
-5
-10
0
-20
5
-30
10
OO
AFL
STUDIO
STUDIO MONITOR FEEDS
STUDIO OUT 2
ST4 L
ST4 R
ST4
-10
LEV
-20
-30
OO
LEV
-10
-20
-30
OO
STUDIO
ST1
L
IN
48V
0
30
20
GAIN
HPF
100Hz
HF
12k
-15 +15
Q
0.8
2k
1k
F
700
HM
400Hz
18k
G
-15 +15
Q
0.8 6
120
60
F
30
LM
18Hz
G
-15 +15
80Hz
-15LF+15
EQ IN
AUX1
PRE
OO
AUX2
PRE
OO
AUX3
POST
OO
AUX4
POST
OO
=
PAN
L R
MUTE
PFL
HI
SIG
10
L-R
5
0
5
10
OO
LINE
IN
INSERT
48V
0
30
40
40
20
GAIN
50
50
6040-14 6
6040-14 6
HPF
100Hz
HF
12k
-15 +15
Q
0.8
6
6
2k
4k
1k
4k
F
6k
700
6k
HM
400Hz
18k
G
-15 +15
Q
0.8 6
120
60
300
300
F
600
30
600
LM
1k
18Hz
1k
G
-15 +15
80Hz
-15LF+15
EQ IN
AUX1
PRE
+6
+6
OO
AUX2
PRE
OO
+6
+6
AUX3
POST
OO
+6
+6
AUX4
POST
OO
+6
+6
=
PAN
L R
MUTE
PFL
HI
SIG
10
L-R
5
0
5
10
OO
R
ST1 L
ST2 L
ST1 R
ST2 R
ST1
-5
-10
LEV
0
-20
5
-30
10
OO
HF
12k
-15 +15
80Hz
-15LF+15
AUX1
PRE
OO
+6
AUX2
PRE
OO
+6
=
BAL
L R
LEV
-5
-10
0
-20
5
-30
10
OO
PFL
L-R
RW STOP PLAY FF RECSHIFTINC
MIDI MIDIMIDIMIDI
127O127O127O127
O
LINE
INSERT
0
30
40
20
50
6040-14 6
HPF
100Hz
-15 +15
Q
0.8
6
2k
1k
4k
F
700
6k
400Hz
18k
G
-15 +15
Q
0.8 6
120
60
300
F
30
600
18Hz
1k
G
-15 +15
-15LF+15
EQ IN
+6
OO
OO
+6
OO
+6
OO
+6
=
L R
MUTE
PFL
HI
SIG
10
5
0
5
10
OO
2 TRACK 1 OUT
L
AUX 1
L
AUX 2
R
AUX 3
AUX 4
-5
0
5
AUX MASTER
10
1
PFL
+6
OO
AFL
L-R
AUX MASTER
2
MIX L-R
OO
+6
AFL
AUX 1
AUX MASTER
AUX 2
3
AUX 3
+6
OO
AFL
AUX 4
AUX MASTER
-5
4
0
5
+6
OO
10
AFL
AFL
21
+
L R1234
10
5
0
5
10
OO
2 TRACK 2 OUTLR
INSERT L INSERT R
10
5
0
5
10
OO
CRM L
R
2 TRACK 1 IN
L
CRM R
R
2 TRACK 2 IN
ALT L
L
ALT R
R
POWER
+16
+16
+9
+9
+6
+6
+3
+3
0
0
-3
-3
-6
-6
-9
-9
-12
-12
-16
-16
-20
-20
-30
-30
L
R
PFL/AFL ACTIVE
2 TO 1
2 TRACK DUB
1 TO 2
2 TRACK 1
REPLACE L-R
TALK
LEV
MIN MAX
TALK
ALLEN&HEATH
TO STUDIO
TO AUX 1 & 2
PHONES
LEVEL
MIN MAX
2 TRACK 2
2 TRACK 1
DIG MASTER
MAIN MIX L-R
CRM
LEVEL
MIN MAX
MONO
ALT SPKRS
DIG MASTER
TO L-R
PHONES
Mains Lead
Check that the correct mains
6 pin to 6 pin FireWire cable.
6 pin to 4 pin FireWire cable.
plug is fitted.
SONAR LE
SONAR LE
Music Software Install disk.
INSTALL
cakewalk
Allen & Heath 4 ZED-R16 User Guide
SAFETY INSTRUCTIONS
WARNINGS
-
Read the following before proceeding :
CAUTION
ATTENTION: RISQUE DE CHOC ELECTRIQUE – NE PAS OUVRIR
Read instructions:
Do not remove cover: Operate the console with its covers correctly fitted.
Power sources: Connect the console to a mains power unit only of the type described in this User
Power cord routing: Route the power cord so that it is not likely to be walked on, stretched or pinched by
Retain these safety and operating instructions for future reference. Adhere to all warnings printed here and on the console. Follow the operating instructions printed in this
User Guide.
Guide and marked on the rear panel. Use the power cord with sealed mains plug appropriate for your local mains supply as provided with the console. If the provided plug
does not fit into your outlet consult your service agent for assistance.
items placed upon or against it.
Grounding:Do not defeat the grounding and polarisation means of the power cord plug. Do not
remove or tamper with the ground connection in the power cord.
Water and moisture: To reduce the risk of fire or electric shock do not expose the console to rain or mois-
Ventilation: Do not obstruct the ventilation slots or position the console where the air flow required
Heat and vibration: Do not locate the console in a place subject to excessive heat or direct sunlight as this
Servicing: Switch off the equipment and unplug the power cord immediately if it is exposed to
Installation: Install the console in accordance with the instructions printed in this User Guide. Do
!
WARNING: This equipment must be earthed.
ture or use it in damp or wet conditions. Do not place containers of liquids on it which
might spill into any openings.
for ventilation is impeded. If the console is to be operated in a rack unit or flightcase
ensure that it is constructed to allow adequate ventilation.
could be a fire hazard. Locate the console away from any equipment which produces
heat or causes excessive vibration.
moisture, spilled liquid, objects fallen into the openings, the power cord or plug become damaged, during lightening storms, or if smoke, odour or noise is noticed. Refer
servicing to qualified technical personnel only.
not connect the output of power amplifiers directly to the console. Use audio connectors and plugs only for their intended purpose.
Allen & Heath 5 ZED-R16 User Guide
SAFETY INSTRUCTIONS
Important Mains plug wiring instructions
The console is supplied with a moulded mains plug fitted to the AC
mains power lead. Follow the instructions below if the mains plug has to
be replaced. The wires in the mains lead are coloured in accordance
with the following code:
TERMINALWIRE COLOUR
European USA/Canada
LIVE BROWN BLACK
L
!
The wire which is coloured Green and Yellow must be connected to the terminal
in the plug which is marked with the letter E or with the Earth symbol. This appliance must be earthed.
The wire which is coloured Blue must be connected to the terminal in the plug
which is marked with the letter N.
The wire which is coloured Brown must be connected to the terminal in the plug
which is marked with the letter L.
Ensure that these colour codes are followed carefully in the event of the plug
being changed.
NEUTRAL BLUE WHITE
N
EARTH GND GREEN & YELLOW
E
GREEN
General Precautions:
Damage : To prevent damage to the controls and cosmetics avoid placing heavy objects
Environment : Protect from excessive dirt, dust, heat and vibration when operating and stor-
Cleaning : Avoid the use of chemicals, abrasives or solvents. The control panel is best
Transporting : The console may be transported as a free-standing unit or mounted in a rack or
Hearing : To avoid damage to your hearing do not operate any sound system at exces-
on the control surface, scratching the surface with sharp objects, or rough handling and vibration.
ing. Avoid tobacco ash, smoke, drinks spillage, and exposure to rain and moisture. If the console becomes wet, switch off and remove mains power immediately. Allow to dry out thoroughly before using again.
cleaned with a soft brush and dry lint-free cloth. The faders, switches and potentiometers are lubricated for life. The use of electrical lubricants on these
parts is not recommended. The fader and potentiometer knobs may be removed for cleaning with a warm soapy solution. Rinse and allow to dry fully
before refitting them.
flightcase. Protect the controls from damage during transit. Use adequate
packing if you need to ship the unit.
sively high volume. This applies particularly to close-to-ear monitoring such as
headphones and in-ear systems. Continued exposure to high volume sound can
cause frequency selective or wide range hearing loss.
Allen & Heath 6 ZED-R16 User Guide
CONTENTS
Thank you for purchasing your Allen & Heath ZED-R16. To ensure that you get the
maximum benefit from the unit please spare a few minutes familiarizing yourself with the
controls and setup procedures outlined in this user guide. For further information please
refer to the additional information available on our web site, or contact our technical
support team.
Wiring diagrams for audio leads…….. .................. 49
Product Support ................................................ 50
Allen & Heath 7 ZED-R16 User Guide
PANEL DRAWINGS ZED-R16
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR.
ATTENTION: REMPLACER PAR UN FUSIBLE STRICTEMENT IDENTIQUE EN VALEURS.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
WARNING: THIS APPARATUS MUST BE EARTHED
Laite on liitettävä suojamaadoituskoskettimilla varustettuun pistorasiaan
Apparatet må tilkoples jordet stikkontakt
Apparaten skall anslutas till jordat uttag
OFF
ON
0 I
ENGINEERED IN ENGLAND BY ALLEN & HEATH LIMITED.
MIC
LINE
IN
1
INSERT
48V
0
30
40
20
GAIN
6040-14 6
HPF
100Hz
HF
12k
-15 +15
1111111111111111
Q
0.8
6
2k
1k
4k
F
700
HM
400Hz
18k
G
-15 +15
1111111111111111
Q
0.8
6
120
60
300
F
30
LM
1k
18Hz
G
-15 +15
80Hz
-15LF+15
EQ IN
AUX1
PRE
OO
+6
AUX2
PRE
+6
OO
AUX3
POST
+6
OO
AUX4
POST
OO
+6
=
PAN
L R
MUTE
PFL
HI
12345678910111213141516
SIG
10
L-R
5
0
DIG SND
Post-EQ
5
DIG RET
Pre-INS
10
DIG RET
Post-EQ
FADER
=MIDI
OO
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired operation.
REPLACE FUSE WITH SAME TYPE AND RATING.CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE
CET APPAREIL DOIT ETRE MIS A LA TERRE
FUSE
T1.6A L 250V 20mm
AC MAINS IN ~
100 - 240V~ 47-63Hz 55W MAX
Serial No.
MICMICMICMICMICMICMICMICMICMICMICMICMICMICMIC
LINE
IN
LINE
IN
LINE
IN
LINE
IN
LINE
IN
ALLEN&HEATH
LINE
IN
LINE
IN
LINE
IN
LINE
IN
LINE
IN
FIREWIRE
ADAT
44.1kHz
LINE
IN
LINE
IN
LINE
IN
2345678910111213141516
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
INSERT
48V
48V
48V
48V
48V
48V
48V
48V
48V
48V
0
0
0
0
0
0
0
0
30
30
30
30
30
30
40
40
40
40
30
1k
400Hz
20
-15 +15
0.8
-15 +15
0.8
60
18Hz
-15 +15
-15LF+15
OO
OO
OO
OO
L R
HI
SIG
40
20
GAIN
50
50
6040-14 6
6040-14 6
HPF
HPF
100Hz
100Hz
HF
12k
-15 +15
Q
0.8
6
6
2k
2k
4k
1k
4k
F
6k
700
6k
HM
18k
400Hz
18k
G
-15 +15
Q
0.8
6
6
120
120
60
300
300
F
600
30
600
LM
1k
1k
18Hz
G
-15 +15
80Hz
-15LF+15
EQ IN
EQ IN
AUX1
PRE
OO
+6
+6
AUX2
PRE
+6
+6
OO
AUX3
POST
+6
+6
OO
AUX4
POST
OO
+6
+6
=
=
PAN
L R
MUTE
MUTE
PFL
PFL
HI
SIG
10
10
L-R
5
5
0
0
5
5
10
10
OO
OO
20
20
GAIN
50
6040-14 6
HPF
100Hz
HF
12k
-15 +15
Q
0.8
6
2k
1k
4k
F
6k
700
HM
400Hz
18k
G
-15 +15
Q
0.8
6
120
60
300
F
600
30
LM
1k
18Hz
G
-15 +15
80Hz
-15LF+15
EQ IN
AUX1
PRE
OO
+6
AUX2
PRE
+6
OO
AUX3
POST
+6
OO
AUX4
POST
OO
+6
=
PAN
L R
MUTE
PFL
HI
SIG
10
L-R
5
0
5
10
OO
20
GAIN
GAIN
50
HF
12k
-15 +15
Q
0.8
1k
F
6k
700
HM
400Hz
G
-15 +15
Q
0.8
120
60
F
600
30
LM
18Hz
G
-15 +15
80Hz
-15LF+15
AUX1
PRE
OO
AUX2
PRE
OO
AUX3
POST
OO
AUX4
POST
OO
PAN
L R
HI
SIG
10
L-R
10
GAIN
50
50
6040-14 6
6040-14 6
HPF
HPF
100Hz
100Hz
HF
HF
12k
12k
-15 +15
Q
Q
0.8
6
6
2k
2k
4k
1k
4k
F
F
6k
700
6k
700
HM
HM
18k
400Hz
18k
G
G
-15 +15
Q
Q
0.8
6
6
120
60
300
300
F
F
600
30
600
LM
LM
1k
1k
18Hz
G
G
-15 +15
80Hz
80Hz
-15LF+15
EQ IN
EQ IN
AUX1
AUX1
PRE
PRE
OO
+6
+6
AUX2
AUX2
PRE
PRE
+6
+6
OO
AUX3
AUX3
POST
POST
+6
+6
OO
AUX4
AUX4
POST
POST
OO
+6
+6
=
=
PAN
PAN
L R
MUTE
MUTE
PFL
PFL
HI
SIG
10
L-R
L-R
5
5
0
0
5
5
10
OO
OO
30
40
20
20
GAIN
GAIN
50
6040-14 6
HPF
HPF
100Hz
100Hz
HF
HF
12k
12k
-15 +15
-15 +15
Q
Q
0.8
0.8
6
2k
2k
1k
4k
1k
F
F
700
6k
700
HM
HM
400Hz
18k
400Hz
G
G
-15 +15
-15 +15
Q
Q
0.8
0.8
6
120
120
60
60
300
F
F
30
600
30
LM
LM
1k
18Hz
18Hz
G
G
-15 +15
-15 +15
80Hz
80Hz
-15LF+15
-15LF+15
EQ IN
AUX1
AUX2
AUX3
AUX4
EQ IN
AUX1
PRE
PRE
OO
OO
+6
AUX2
PRE
PRE
+6
OO
OO
AUX3
POST
POST
+6
OO
OO
AUX4
POST
POST
OO
OO
+6
=
=
PAN
PAN
L R
L R
MUTE
MUTE
PFL
PFL
HI
HI
SIG
SIG
10
10
L-R
L-R
5
5
0
0
5
5
10
10
OO
OO
0
30
40
50
6040-14 6
6
4k
6k
18k
6
300
600
1k
+6
+6
+6
+6
30
40
20
20
GAIN
GAIN
50
6040-14 6
HPF
100Hz
HF
HF
12k
12k
-15 +15
-15 +15
Q
Q
0.8
0.8
6
2k
2k
1k
4k
1k
F
F
700
6k
700
HM
HM
400Hz
18k
400Hz
G
G
-15 +15
-15 +15
Q
Q
0.8
0.8
6
120
120
60
60
300
F
F
30
600
30
LM
LM
1k
18Hz
18Hz
G
G
-15 +15
-15 +15
80Hz
80Hz
-15LF+15
-15LF+15
EQ IN
AUX1
AUX1
PRE
PRE
OO
OO
+6
AUX2
AUX2
PRE
PRE
+6
OO
OO
AUX3
AUX3
POST
POST
+6
OO
OO
AUX4
AUX4
POST
POST
OO
OO
+6
=
=
PAN
PAN
L R
L R
MUTE
PFL
HI
HI
SIG
SIG
10
10
L-R
L-R
5
5
0
0
5
5
10
10
OO
OO
48V
0
0
30
40
40
20
GAIN
GAIN
50
50
6040-14 6
6040-14 6
HPF
HPF
100Hz
100Hz
HF
HF
12k
12k
-15 +15
Q
Q
0.8
6
6
2k
4k
1k
4k
1k
F
F
6k
700
6k
700
HM
HM
18k
400Hz
18k
400Hz
G
G
-15 +15
Q
Q
0.8
6
6
120
60
60
300
300
F
F
600
30
600
30
LM
LM
1k
1k
18Hz
18Hz
G
G
-15 +15
80Hz
80Hz
-15LF+15
EQ IN
+6
+6
+6
+6
MUTE
PFL
-15LF+15
EQ IN
AUX1
AUX1
PRE
PRE
OO
+6
AUX2
AUX2
PRE
PRE
+6
OO
AUX3
AUX3
POST
POST
+6
OO
AUX4
AUX4
POST
POST
OO
+6
=
PAN
PAN
L R
MUTE
PFL
HI
SIG
SIG
10
L-R
L-R
5
0
5
10
OO
20
-15 +15
0.8
-15 +15
0.8
-15 +15
OO
OO
OO
OO
L R
HI
INSERT
48V
48V
0
30
HPF
100Hz
2k
18k
120
1k
EQ IN
=
MUTE
PFL
10
5
0
5
10
OO
0
30
40
40
20
GAIN
GAIN
50
50
6040-14 6
6040-14 6
HPF
100Hz
HF
HF
12k
12k
-15 +15
Q
Q
0.8
6
6
2k
4k
1k
4k
1k
F
F
6k
700
6k
700
HM
HM
400Hz
18k
400Hz
G
G
-15 +15
Q
Q
0.8
6
6
120
60
60
300
300
F
F
600
30
600
30
LM
LM
1k
18Hz
18Hz
G
G
-15 +15
80Hz
80Hz
-15LF+15
-15LF+15
EQ IN
AUX1
AUX1
PRE
PRE
OO
+6
+6
AUX2
AUX2
PRE
PRE
+6
+6
OO
AUX3
AUX3
POST
POST
+6
+6
OO
AUX4
AUX4
POST
POST
OO
+6
+6
=
PAN
PAN
L R
MUTE
PFL
HI
SIG
SIG
10
L-R
L-R
5
0
5
10
OO
48kHz
20
-15 +15
0.8
-15 +15
0.8
-15 +15
OO
OO
OO
OO
L R
HI
MIDI OUT
L
LINE
IN
INSERT
48V
0
30
30
40
40
20
GAIN
50
6040-14 6
6040-14 6
HPF
HPF
100Hz
100Hz
HF
12k
-15 +15
Q
0.8
6
6
2k
2k
4k
1k
F
6k
700
HM
18k
400Hz
18k
G
-15 +15
Q
0.8
6
6
120
120
60
300
F
600
30
LM
1k
1k
18Hz
G
-15 +15
80Hz
-15LF+15
EQ IN
EQ IN
AUX1
PRE
OO
+6
+6
AUX2
PRE
+6
+6
OO
AUX3
POST
+6
+6
OO
AUX4
POST
OO
+6
+6
=
=
PAN
L R
MUTE
MUTE
PFL
PFL
HI
SIG
10
10
L-R
5
5
0
0
5
5
10
10
OO
OO
R
LINE
IN
ST1 L
INSERT
ST1 R
48V
0
30
40
20
ST1
GAIN
LEV
50
50
-20
6040-14 6
-30
HPF
100Hz
HF
HF
12k
12k
-15 +15
Q
80Hz
0.8
6
2k
4k
1k
4k
F
AUX1
6k
700
6k
PRE
HM
400Hz
18k
G
AUX2
PRE
-15 +15
BAL
Q
0.8
6
120
60
300
300
F
LEV
600
30
600
LM
-20
1k
18Hz
-30
G
-15 +15
80Hz
-15LF+15
EQ IN
AUX1
PRE
OO
+6
AUX2
PRE
+6
OO
AUX3
POST
+6
OO
AUX4
POST
OO
+6
=
PAN
L R
MUTE
PFL
HI
SIG
127
10
L-R
5
0
5
10
OO
ADAT OUT ADAT IN
ST1
-10
OO
-15 +15
-15LF+15
OO
OO
L R
-10
OO
-5
=
-5
PFL
L-R
STUDIO OUT 1
ST2
L
R
ST2 L
ST2 R
ST2
LEV
0
-20
5
-30
10
HF
12k
80Hz
AUX1
PRE
+6
AUX2
PRE
+6
BAL
LEV
0
-20
5
-30
10
-10
OO
-15 +15
-15LF+15
OO
OO
L R
-10
OO
-5
10
+6
+6
=
-5
10
PFL
L-R
ST3 L
ST3 R
ST3
LEV
0
-20
5
-30
LEV
0
-20
5
-30
STUDIO
L
R
ST4 L
ST4 R
-5
-10
0
5
OO
10
PFL
L-R
MIX L-R
AUX 1
AUX 2
AUX 3
AUX 4
-5
-10
0
5
10
OO
AFL
STUDIO MONITOR FEEDS
MIDI control
RW STOP PLAY FF RECSHIFTINC
MIDIMIDIMIDIMI DI
127O127O127
O
O
1-89-161-89-16
STUDIO OUT 2
ST4
LEV
-20
-30
LEV
-20
-30
STUDIO
AUX 1
L
AUX 2
R
AUX 3
AUX 4
INSERT LINSERT R
-5
-10
0
5
AUX MASTER
OO
10
1
PFL
+6
OO
AFL
L-R
AUX MASTER
2
MIX L-R
+6
OO
AFL
AUX 1
AUX MASTER
AUX 2
3
AUX 3
OO
+6
AFL
AUX 4
AUX MASTER
-5
4
-10
0
5
OO
+6
10
OO
AFL
AFL
21
+
L R1234
10
10
5
5
0
0
5
5
10
10
OO
OO
R
2 TRACK 2 OUTLR
CRM L
2 TRACK 1 IN
L
CRM R
R
2 TRACK 2 IN
ALT L
ALT R
TALK
ALLEN&HEATH
PHONES
LEVEL
CRM
LEVEL
LEV
POWER
PFL/AFL ACTIVE
MIN MAX
MIN MAX
MIN MAX
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
L
2 TO 1
2 TRACK DUB
1 TO 2
2 TRACK 1
REPLACE L-R
TALK
TO STUDIO
TO AUX 1 & 2
2 TRACK 2
2 TRACK 1
DIG MASTER
MAIN MIX L-R
MONO
ALT SPKRS
DIG MASTER
TO L-R
L
R
+16
+9
+6
+3
0
-3
-6
-9
-12
-16
-20
-30
R
PHONES
2 TRACK 1 OUT
L
Allen & Heath 8 ZED-R16 User Guide
INTRODUCTION TO THE ZED-R16
A Technical Overview:
The Allen & Heath ZED-R16 mixer has been carefully and lovingly designed in the beautiful county of Cornwall in the UK and
is manufactured alongside a wide range of professional audio mixing consoles.
Allen & Heath has a long history of making classic recording mixers such as the Sigma, Syncon, System 8, Saber and the
GS3000, but for a few years have concentrated on the live sound, installation and pro DJ markets.
Re-entering the world of recording mixers is a very exciting prospect for us and our customers. We spent a long time examining how modern recording methods, equipment and software applications have changed the way musicians and sound engineers work, then over a pizza lunch at one PLASA show we cemented the ideas together as the original concept for ZED-R16.
ZED-R16 is designed to fulfil the needs of musicians and sound engineers with many requirements and different ways of working. With your ZED-R16 you can:
• Record multi-channel via FireWire or ADAT.
• Monitor each recording track via the FireWire inputs.
• Use the FireWire connections to and from each channel to insert processing plug-ins such as gates or compressors.
• Use the ZED-R16 to mix a live show and record it to multi-track (Either ADAT or FireWire).
• Mix in analogue using the FireWire inputs, pre or post EQ.
• Mix in digital using MIDI faders, rotaries and switches provided on the ZED-R16.
• Use analogue EQ as an analogue plug-in to a digital system.
• Use the professional studio features to control monitoring and artists feeds as well as transport control.
In many ways the ZED-R16 is a modern classic recording console. It has attributes of an old fashioned in-line recording mixer
but with digital sends from each channel as the record path and digital returns being the monitor path. Add to this the flexibility of where you send or return the digital connections within the channel strip, and then the ability to use the faders and the
other MIDI controllers to mix in your software application, it all adds up to a unique and mouth watering product.
The components used in ZED series are predominantly the same as in the larger Allen & Heath products and the construction
methods are also very similar — utilising individual vertically mounted channel circuit boards with each rotary control fixed
with a metal nut to the front panel. This provides a very robust product that will resist damage and give years of reliable use. It
also makes servicing easier should it be required.
Mic/Line Pre-amps:
The ultimate performing pre-amps are fitted to ZED-R16. Similar only to those used in GL2800 & GL3800, they comprise a
symmetrical circuit with individual linearising feedback to both phases, along with the lowest noise transistors available, providing astoundingly low distortion and noise which translates to superior clarity and dynamic range.
EQ:
Some may say that the ZED-R16 has too much EQ for this size of mixer with two fully parametric mid sections and yes it is
powerful, but try it and you’ll love it, especially the low mid-great for rich punchy bass guitar and powerful kick drum sounds.
MIDI Control:
There is a MIDI controller area in the master where 12 rotary, 4 linear and 12 switches can be mapped to control your software functions. In addition there are 5 dedicated transport keys, plus each of the 16 channel faders can be switched to MIDI
control.
FireWire & ADAT:
Each of the 16 main channels plus the master left & right mix has a digital send and return. These are flexible in that the channel signals can be sent pre-insert or post EQ and the return can be switched into pre-insert or pre-fader or not switched in at
all.
The FireWire controller we use in ZED-R16 is the DICE Jr from TC Applied Technologies and is capable of streaming up to
64 channels at a sample rate of up to 192kHz. The device employs a patented low jitter phase locked loop using its JET™PLL
technology and is able to interface to the optical ADAT connectors giving a maximum of 16 ADAT inputs and outputs. Coupled to this are high quality 24 bit 114dB and 118dB ADC’s and DAC’s providing a super high quality link between the worlds
of analogue and digital.
SONAR LE:
Included with your ZED-R16 is SONAR LE, a fully working light version (limited to 8 simultaneous inputs & outputs) of the
award winning SONAR Producer audio workstation software from Cakewalk. Now you have SONAR LE, a discounted upgrade is possible once you’ve registered at cakewalk.com.
Allen & Heath 9 ZED-R16 User Guide
SPECIFICATIONS
Operating Levels
Inputs
Mono channel (XLR) Input -6 to –60dBu for nominal (+14dBu in max)
Mono channel Line Input (Jack socket) +14 to –40dBu (+34dBu maximum)
Insert point (TRS Jack socket) 0dBu nominal +21dBu maximum
Stereo Input (Jack sockets) 0dBu nominal (control = Off to +10dB)
Stereo input (phono sockets) 0dBu nominal (control = Off to +10dB)
2 Track Input (phono sockets) 0dBu nominal +21dBu maximum
Outputs
Main (2 Track 1) L-R (XLR) +4dBu nominal. +27dBu maximum.
L-R Insert (TRS Jack socket) 0dBu nominal +21dBu maximum
Mix Noise, Aux 1-4 out, sends minimum, masters at unity 22-22kHz -86dBu
Mic Pre EIN @ 60dB gain 150R input Z 22-22kHz -128.5dBu
MIDI
Fader and Rotary values 0-127
MIDI switches Note on/note off
Transport control MIDI Machine Control
MIDI channel Default = 16. User settable
Power consumption 48W
Allen & Heath 10 ZED-R16 User Guide
DIMENSIONS
102mm (4.0”)
470mm (18.5”)
93mm
(3.7”)
704mm (27.7”)
465mm (18.3”)
704mm (27.7”)
Weight kg (lb)
Unpacked Packed
ZED-R16 13 (29lb) 15 (33 lb)
Allen & Heath 11 ZED-R16 User Guide
DIGITAL SEND
POST-EQ
DACADC
LM
HMHF
MIC IN
PHANTOM POWER SWITCH
+48V
GAIN
+
-
100Hz
FIREWIRE BUS
DIGITAL RETURN
HPF
PRE-INSERT
INSERT
4 BAND PARAMETRIC EQUALISER
LF
g g f qg f q g
LINE IN
MONO CHANNEL
ST1 & 2 RCA
ST1 & 2 JACK
MONO CHANNELS 1 - 16
STEREO 2 TRACK OUT 1
MONO CHANNELS 1 - 16
DIGITAL MASTER L - R
BLOCK DIAGRAM
L
R
L
R
STEREO INPUTS 3 & 4
FIREWIRE & ADAT
STEREO INPUTS 1 & 2
GAIN
L
ST3 & 4
R
ZED-R 16 BLOCK DIAGRAM
DIGITAL MASTER
TO MIX L-R
AUX 2
AUX 3
AUX 4
PFL/AFL L
PFL/AFL R
2 TRK 1 IN
2 TRK 2 IN
PFL ACTIVE
DIGITAL RETURN
POST-EQ
EQ
IN
2 BAND EQUALISER
LFgHF
g
AUDIO
FADER
MIDI DATA
PEAK
SIGNAL
ENABLE MIDI
BYPASS FADER
MIDI
PFL
LEVEL
+
PFL
LEVEL
PFL
MUTE
AUX1
AUX 2
AUX3
AUX 4
AUX1
AUX 2
AUX 1
MAIN MIX R
MAIN MIX L
PAN
L-R
BAL
L-R
L-R
2 Track 1
Replace Mix
L
R
L
R
2 TRACK 2 IN
2 TRACK 1 IN
DIGITAL MASTER IN
L INSERT
R INSERT
+
-
+
-
AFL
MASTER LEVEL
TIP SEND
TIP SEND
AUX1
FIREWIRE BUS
MAIN LR
+10dB
+10dB
PFL/AFL
DACADC
DIGITAL MASTER IN
2 TO 1
DUBBING SWITCHES
1 TO 2
MONO
+
CRM
LEVEL
ALT
PHONES
LEVEL
BALANCED
+4dBu NOMINAL
LEFT
MAIN (2TRK 1) OUT
RIGHT
GROUND COMPENSATED
-2dBu NOMINAL
LEFT
2TRK 2 OUT
RIGHT
L R
LEFT
CONTROL ROOM MONITORS
RIGHT
LEFT
ALTERNATE SPEAKERS
RIGHT
AUX OUT
1 - 4
TALKBACK
TALKBACK
MIC
GAIN
STUDIO AUX 1 - 2
TALK
MAIN MIX L-R (POSTFADE)
AUX 1(POSTFADE)
AUX 2 (POSTFADE)
AUX 3 (POSTFADE)
AUX 4 (POSTFADE)
LEFT
STUDIO OUT 1 - 2
RIGHT
AFL
Allen & Heath 12 ZED-R16 User Guide
MONO INPUT CHANNEL
Microphone Input Socket
1
Standard 3-Pin XLR socket wired as Pin 1=Chassis, Pin 2=hot (+),
Pin 3=Cold (-).
1
2
3
LINE
IN
INSERT
1
MIC
Line Input Jack Socket
2
Standard 1/4” (6.25mm) Jack socket for balanced or unbalanced line
level signals. Wired Tip=Hot(+), Ring=cold (-), Sleeve=Chassis.
IMPORTANT NOTE:
The Line input signal is connected to the XLR input through attenuating resistors and coupling capacitors, in other words the two inputs are summed together at different levels. If Only the Mic input
signal is required, make sure nothing is plugged into the Line jack and
vice versa.
Insert Jack Socket
3
Standard 1/4” (6.25mm) Jack socket for unbalanced insert send and
return signals. Wired Tip=send, Ring=return, Sleeve=Chassis. Nominal level is 0dBu. The insert point is after the 100Hz filter and before
the EQ.
48V Phantom Power Switch
4
Applies +48V to pins 2 and 3 of the XLR input though 6k8 resistors
for phantom powered condenser microphones.
4
5
48V
GAIN
0
30
20
40
50
60 40-146
HPF
6
dBr
5.00
0.00
-5.00
-10.00
-15.00
-20.00
-25.00
-30.00
-35.00
-40.00
10.00 Hz100.001000.0010000.00
ZED-R 16 Hi Pass Filter
100Hz
Gain Control
5
This adjusts the gain of the input amplifier to match the signal level
of the input. The gain is varied from +6dB to +60dB for signals
plugged in to the xlr socket (Mic Input) and –14dB to +40dB for
signals plugged into the Line input jack.
6
100Hz Hi-pass Filter
The Hi-pass filter is used for reducing pop noise and
rumble from microphone signals. It is a 2-pole (12dB
per octave) filter with a corner frequency set at
100Hz.
The filter affects signals from both Mic XLR and Line
jack socket.
Allen & Heath 13 ZED-R16 User Guide
MONO INPUT CHANNEL
HF EQ
7
The HF (High Frequency) equaliser affects the frequency response
of the higher audible frequencies. The corner frequency of 12kHz is
around 3dB from the maximum cut or boost of the circuit.
ZED-R 16 HF EQ
dBr
7
HF
12k
-15+15
1
20.00
15.00
10.00
8
HM
LM
Q
F
700
G
Q
F
1k
400Hz
30
0.8
2k
18k
-15+15
1
0.8
120
60
18Hz
1k
6
6
4k
300
6k
600
5.00
0.00
-5.00
-10.00
-15.00
-20.00
20.00 Hz100.001000.0010000.0030000.00
HMF EQ
8
The HMF (High Mid Frequency) equaliser affects the upper middle
of the audible frequency range. The frequency graduations on the
sweep control are the centre frequencies of the EQ. The Q factor
is the width of the equaliser curve and is variable from a wide 0.8 to
a sharp 6.
ZED-R 16 HMF EQ
20.00
15.00
10.00
dBr
5.00
0.00
G
-5.00
-10.00
-15+15
LF
-15.00
-20.00
20.00 Hz100.001000.0010000.0030000.00
80Hz
-15
+15
EQ IN
Allen & Heath 14 ZED-R16 User Guide
MONO INPUT CHANNEL
LMF EQ
9
The LMF (Low Mid Frequency) equaliser affects the lower middle of
HF
12k
-15+15
1
dBr
20.00
the audible frequency range. The frequency graduations on the
sweep control are the centre frequencies of the EQ. As with the
HMF section, the Q factor is variable from 0.8 to 6. The graph
shows the Q setting in the minimum, middle and maximum positions, and the extents of the frequency range.
ZED-R 16 LMF EQ
Q
F
700
HM
400Hz
G
Q
F
30
0.8
2k
1k
18k
-15+15
1
0.8
120
60
6
6
4k
300
6k
600
15.00
10.00
5.00
0.00
-5.00
-10.00
-15.00
-20.00
10.00 Hz100. 001000.0010000.00
LF EQ
dBr
20.00
15.00
10
The LF (Low Frequency) equaliser affects the frequency response of
the lower audible (bass) frequencies. The corner frequency of 60Hz
is around 3dB from the maximum cut or boost of the circuit.
9
LM
G
LF
18Hz
1k
-15+15
10.00
5.00
0.00
-5.00
-10.00
-15.00
10
80Hz
-15
11
+15
EQ IN
Allen & Heath 15 ZED-R16 User Guide
-20.00
10.00 Hz100.001000.0010000.00
11
EQ IN
The EQ IN switch enables the equaliser when pushed in. The EQ is
bypassed when the switch is in its up position.
12
AUX1
PRE
AUX2
PRE
MONO INPUT CHANNEL
Auxes 1 & 2
12
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 unaffected by the fader. Auxes 1 & 2 are primarily used for foldback monitoring purposes, as the fader does not affect the level.
OO
+6
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 all of the Aux outputs situated in
the master section of the mixer.
13
14
15
AUX3
POST
AUX4
POST
PAN
OO
OO
OO
=
LR
MUTE
+6
+6
+6
13
14
15
Auxes 3 & 4
The source for Aux sends 3 & 4 is post-fader. They are also muted by
the Mute switch. Auxes 3 & 4 are primarily used for effects sends.
Jumper Link Options.
There are optional positions for fitting link wires on the mono input
channel circuit boards to change Auxes 1 & 2 to be post fade and
Auxes 3 & 4 to be pre-fade sources.
These are not easy to get to however, and involve taking out the channels from the mixer to access. We will try to improve this with future
updates to the circuit board.
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.
Mute Switch
This mutes or cuts the signal to the main L-R bus and the Auxes. A
rectangular LED illuminates to show the Mute switch is pressed.
16
18
HI
SIG
PFL
1
16
17
10
17
L-R
18
5
0
Allen & Heath 16 ZED-R16 User Guide
PFL Switch
The PFL (Pre-Fade Listen) switch sends the channel signal to the PFL
bus and subsequently to the headphones and the main left & right meters. Used for checking the audio signal before raising the fader or unmuting the channel.
L-R Routing Switch
The L-R switch connects the post-fade signal to the main L-R
mix bus via the pan control. For minimum noise from the mix
bus summing amplifier, leave the switches in their up positions if
the channel signal is not required on the bus.
Signal & High level indicators
The Signal LED illuminates dimly at a threshold of –14dB nominal level
and gets brighter with higher level signal. The source for the signal &
peak LED’s is just after the EQ IN switch.
The HI signal LED illuminates when the signal just after the EQ IN
switch is within 5dB of clipping.
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