Cloud Z4MK3, Z8MK3 Installation And User Manual
Z4MK3 & Z8MK3
ZONE MIXERS
4
MK3
Four Zone Venue Mixer
Mute
Power
8
MK3
Eight Zone Venue Mixer
Mute
Power
Microphone 1
Microphone 2
Paging Mic Level
Music Source
34
25
16
Music Level
0
0
3
2
1
0
Zone 1 Zone 2Zone 3Zone 4Zone 5Zone 6Zone 7Zone 8
Microphone 1
10
Microphone 2
Paging Mic Level
Music Source
34
25
16
Music Level
0
10
0
100
10
0
Zone 1
10
10
100 100 100 100 100 100 100 100
4
5
10
10
0
10
0
6
10
0
10
0
10
0
10
0
10
0
10
0
10
0
0
0
0
Zone 2
0
0
0
10
10
100
10
10
10
10
10
0
10
0
100
10
0
Zone 3
10
0
10
0
10
0
Zone 4
10
0
10
0
10
0
10
0
10
0
100
10
0
10
0
10
0
10
0
Installation and User Guide
Z4-8MK3 Installation and User Guide v1.2
Contents
Safety Information ......................................................................................................................... 4
Safety Notes regarding Installation ............................................................................................................................ 4
Conformities ................................................................................................................................................................... 4
Safety Considerations and Information .................................................................................................................... 4
Caution – High Voltage .............................................................................................................................................. 4
Caution – Mains Fuse ................................................................................................................................................ 4
Caution – Servicing .................................................................................................................................................... 4
OVERVIEW ..................................................................................................................................... 5
Introduction .................................................................................................................................................................... 5
Scope of this manual .................................................................................................................................................. 5
What’s in the box .......................................................................................................................................................... 5
Main Features .................................................................................................................................................................. 5
Optional System Components ................................................................................................................................... 6
LM-2 Mic/line input module with remote music control ..................................................................................6
RSL-6 Series Remote Music Level/source Control ............................................................................................. 6
PM Series paging microphones ................................................................................................................................ 7
PM1 paging microphone ............................................................................................................................................ 7
Block Diagram ................................................................................................................................ 7
Description of front panel ........................................................................................................................................... 8
Description of rear panel ............................................................................................................................................. 9
INSTALLATION ........................................................................................................................... 10
Hardware Considerations .........................................................................................................................................10
Power Supply ................................................................................................................................................................ 10
Fuses and ratings .......................................................................................................................................................10
System Connections ...................................................................................................................................................10
Music Sources ............................................................................................................................................................10
Zone outputs .............................................................................................................................................................11
Microphone inputs ...................................................................................................................................................11
Facility Ports .............................................................................................................................................................. 12
Paging System connections .....................................................................................................................................12
Music Control ...........................................................................................................................................................13
Music Mute .................................................................................................................................................................14
Z4-8MK3 Installation and User Guide v1.22
SETTING UP & OPERATION .................................................................................................... 15
Music Inputs .................................................................................................................................................................. 15
Gain & level ................................................................................................................................................................ 15
Local/remote control ............................................................................................................................................... 15
Microphone Inputs ......................................................................................................................................................15
Phantom Power .........................................................................................................................................................15
Gain & level ................................................................................................................................................................ 15
EQ ................................................................................................................................................................................ 15
High-pass lter .......................................................................................................................................................... 15
Paging mic input ...........................................................................................................................................................16
Phantom Power .........................................................................................................................................................16
Gain & level ................................................................................................................................................................ 16
EQ & high-pass lter ................................................................................................................................................ 16
Zone Outputs ...............................................................................................................................................................16
EQ ................................................................................................................................................................................ 16
Priorities ........................................................................................................................................................................16
Mic 1/Mic 2 priority .................................................................................................................................................16
Paging mic priority ....................................................................................................................................................16
Override of Paging mic priority during Music Mute ......................................................................................... 16
Line 6 priority ............................................................................................................................................................17
Microphone priority over input at Facility Port ................................................................................................ 17
OPTIONS AND ADDITIONAL INFORMATION..................................................................... 18
LM-2 active input modules – general considerations .......................................................................................... 18
Connecting multiple LM-2s .................................................................................................................................... 18
Using the Facility Ports as auxiliary zone inputs ...............................................................................................18
Disabling the Facility Port Noise Gate ................................................................................................................18
RL-1 Series and RSL-6 Series remote control plates – general considerations ............................................19
Control of music source and level via external DC ......................................................................................... 19
Fitting loudspeaker EQ cards .................................................................................................................................... 20
APPENDIX ................................................................................................................................... 21
Application example ....................................................................................................................................................21
PCB jumper location and settings ............................................................................................................................22
PSU capability and optional device current consumption .................................................................................. 24
Ground loops ...............................................................................................................................................................24
EMC considerations .................................................................................................................................................... 24
Technical Specications ..............................................................................................................................................25
Z4-8MK3 Installation and User Guide v1.2 3
Safety Information
Important Safety Instructions
Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.
• Do not use this apparatus near water.
• Clean only with dry cloth.
• Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions.
• Do not install near any heat sources such as radiators,
heat registers, stoves, or other apparatus (including
ampliers) that produce heat.
• Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug
has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety. If
the provided plug does not t into your outlet, consult
an electrician for replacement of the obsolete outlet.
• Protect the power cord from being walked on or
pinched particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.
• Only use attachments/accessories specied by the
manufacturer.
• Use only with the cart, stand, tripod, bracket, or
table specied by the manufacturer, or sold with the
apparatus. When a cart is used, use caution when moving
the cart/apparatus combination to avoid injury from tip-
ove r.
• Unplug this apparatus during lightning storms or when
unused for long periods of time.
• Refer all servicing to qualied service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or plug
is damaged, liquid has been spilled or objects have fallen
into the apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally, or has
been dropped.
The lightning ash with the arrowhead symbol within
an equilateral triangle, is intended to alert you to the
presence of uninsulated dangerous voltages within the
product’s enclosure that may be of sufcient magnitude to
constitute a risk of electric shock.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the appliance.
Un point d’exclamation dans un triangle équilatéral est destiné
à alerter l’utilisateur de la présence d’instructions importantes
sur le fonctionnement et l’entretien (la réparation) dans la
documentation accompagnant l’appareil.
The mains plug is used as the disconnect device and it
should remain readily accessible during intended use. In
order to electrically isolate the apparatus from the mains, the
mains plug should be completely removed from the mains
outlet socket.
La prise du secteur ne doit pas être obstruée ou doit être
facilement accessible pendant son utilisation. Pour être
complètement déconnecté de l’alimentation d’entrée, la prise
doit être débranchée du secteur.
Meaning of the label: Evaluation for apparatus only
based on temperate climate condition, therefore it’s
the only operating condition applied for the
equipment .There may be some potential safety hazard if the
equipment is used in tropical climate region.
L’évaluation pour les appareils est basée dans une condition
climatique tempérée, donc c’est la seule condition de
fonctionnement à appliquer pour l’appareil. Il peut y avoir un
risque potentiel pour la sécurité si l’équipement est utilisé
dans une région climatique tropical.
Meaning of the label: Evaluation for apparatus only
based on altitude not exceeding 2000m, therefore
it’s the only operating condition applied for the
equipment .There may be some potential safety hazard if the
equipment is used at altitude above 2000m.
WARNING:
To reduce the risk of re or electric shock, do not expose this
appliance to rain or moisture.
CAUTION:
Use of controls or adjustments or performance of procedures
other than those specied may result in hazardous radiation
exposure.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: SHOCK HAZARD - DO NOT OPEN
AVIS: RISQUE DE CHOC ÉLECTRIQUE - NE PAS OUVRIR
Z4-8MK3 Installation and User Guide v1.24
L’évaluation pour les appareils est basée uniquement sur une
altitude inférieure à 2000m, donc c’est la seule condition de
fonctionnement à appliquer pour l’appareil. Il peut y avoir un
risque potentiel pour la sécurité si l’équipement est utilisé
avec une altitude au-dessus de 2000m.
Conformities
This product conforms to the following European EMC
Standards: BS EN 55103-1:2009, BS EN 55103-2:2009
This product has been tested for use in commercial
and light industrial environments. If the unit is used
in controlled EMC environments, the urban
outdoors, heavy industrial environments or close to railways,
transmitters, overhead power lines, etc., the performance of
the unit may be degraded.
The product conforms to the following European electrical
safety standard: BS EN 60065:2012
OVERVIEW
Introduction
Thank you for purchasing this Cloud Zone Mixer. We are
condent that you will be pleased with its performance,
features, exibility and reliability.
The Cloud Z8MK3 and Z4MK3 are versatile analogue multizone
audio mixers. They are intended to form part of permanent
sound systems in pubs, bars, restaurants, hotels, ofces,
factories and other areas, where multiple audio sources
(background music, TV sound, etc.) are in use and need to be
easily combined with announcements and/or paging in one
or more zones. They are compatible with Cloud PM Series
paging microphones and are also designed to interface with
most third-party paging microphones conforming to industry
standards.
Scope of this manual:
This manual provides a comprehensive guide to the features
and functionality of the Cloud Z8MK3 and Z4MK3 Zone
Mixers. The two models are identical in facilities and features,
and differ only in the number of zones they support:
Model Z8MK3 – eight output zones
Model Z4MK3 – four output zones
Please read through the manual to become fully acquainted
with the numerous conguration and control functions the
units offer.
The manual is arranged as follows:
• Overview – introduction to the Zone Mixers and their
options.
• Installation – wiring the Zone Mixers in a practical
situation.
What’s in the box
Unpack the Z8MK3 or Z4MK3 and its accessories with care.
It is always a good idea to store all packaging (if practical), in
case you ever need to return the unit to your Cloud dealer
for any reason.
As well as this manual, the shipping carton should contain
the items listed below. Please contact your Cloud dealer
immediately if any of them are missing or damaged.
• Cloud Z8MK3 or Z4MK3 Zone Mixer
• IEC mains lead (AC cord) with moulded plug
appropriate to the territory
• Set of mating connectors for all rear panel screw-
terminal connectors
Main Features
• 6 stereo line inputs
• 8 (Z8MK3) or 4 (Z4MK3) balanced mono line outputs
• 2 microphone inputs (balanced), phantom power
selectable
• Separate paging mic input with contact closure zone
selection
• Per-zone facility port for optional remote mic/line input
module
• Mic routing to all zones with programmable override
logic
• Per-zone front panel control of music level, music source
and mic level
• Supports per-zone remote control of music level and
source
• HF & LF EQ adjustment for each mic input and for
music in each zone music output
• Preset gain trim control for each mic and music input
• Line input 6 may have priority over other music inputs
• Accepts plug-in EQ cards to suit various installed-audio
loudspeakers
• External Music Mute input for interfacing with
emergency systems
• 3U 19” rack-mounting unit
• Setting Up & Operation – setting the system up and
user instructions.
• Options and Additional Information – additional
information about system options.
• Appendix – additional technical information. Includes
technical specications.
The Z8MK3/Z4MK3 manual includes full details of the optional
LM-2 remote input module. Basic information on interfacing
Cloud PM Series paging microphones and connecting the
RL-1 and RSL-6 remote control plates is also provided. This
information is also supplied with each optional item.
Thank you again for placing your condence in Cloud products.
Z4-8MK3 Installation and User Guide v1.2 5
Optional System Components
The following components may form part of the audio system
and may be ordered separately if required. They may also be
retrotted to a system at a later time. Separate datasheets
are available for each of the individual components; download
them at www.cloud.co.uk.
LM-2 Mic/line input module with remote
music control
RL-1 Series Remote Music Level Control
5
6
4
3
2
1
MUSIC LEVEL
7
8
9
0
10
RL-1
MIC LEVEL
5
4
3
2
1
MIC INPUT
6
0
MUSIC LEVEL
7
8
9
10
4
3
2
1
LINE INPUT
7
8
9
10
0
MIC
PRIORITY
6
5
3
4
2
5
1
3
6
6
5
7
4
8
9
2
10
1
0
LM-2
The LM-2 is an active input module which allows a microphone
and a stereo line input to be connected to the Zone Mixer
in a remote location. The faceplate has both phonos and a
3.5 mm jack socket for connection of the line input, and
provides a convenient access point for the connection of a DJ
mixer, laptop, MP3 player or similar. Mic and line inputs have
separate level controls. A MIC PRIORITY button activates the
Zone Mixer’s priority circuitry; when enabled, a microphone
signal from the LM-2 will reduce the music level in the zone
where it is installed. Changing a rear jumper alters the priority
operation so that the mixed mic and line signals from the
module cause the mixer’s line input selected to the Zone to
be fully muted.
The module also includes the functions of the RSL-6 Remote
Control Plate, permitting control of zone music level and
source.
The LM-2 connects to one of the unit’s Facility Ports via
screened Cat 5 cable, and the remote inputs are fed to that
zone only. The mixer’s Mic inputs remain available. Multiple
LM-2s (in the same zone) may be daisy-chained to provide mic
inputs in more than one position. The LM-2 is available in sizes
to suit UK, US and German electrical back boxes; a choice
of nishes is also available. See “Connecting an LM-2 remote
input module” on page 12 and “LM-2 active input modules
– general considerations” on page 18 (LM-2 active input
modules – general considerations) for more information.
The RL-1 Series is a range of small plates with a single control
for locally adjusting the music level in a zone. They connect
to one of the mixer’s REMOTE SOURCE + LEVEL ports. See
“Connecting an RL-1 Series remote control plate” on page
14 and “RL-1 Series and RSL-6 Series remote control plates
– general considerations” on page 19 for more information.
RSL-6 Series Remote Music Level/source
Control
345
2
5
6
4
0
10
MUSIC LEVEL
6
7
8
9
RSL 6-
1
SOURCE SELECT
3
2
1
The RSL-6 Series is a range of plates of the same size as
the RL-1s; they connect in a similar way. They allow local
music source selection as well as music level control. See
“Connecting an RSL-6 Series remote control plate” on page
14 and “RL-1 Series and RSL-6 Series remote control plates
– general considerations” on page 19 for more information.
Z4-8MK3 Installation and User Guide v1.26
PM Series paging microphones
Cloud PM paging microphones may be connected directly
to the Z8MK3 and Z4MK3. Models are available which can
page to 4, 8, 12 or 16 zones. Clearly, not all zones on the
‘higher’ models can be addressed with only one zone mixer.
See “Connecting a PM4/4SA/8/8SA/12/16 paging mic” on page
12 for more information.
PM1 paging microphone
The Cloud PM1 paging microphone is also compatible with the
Z8MK3 and Z4MK3. It is a much simpler unit which addresses
only one zone. See “Connecting a PM1 paging mic” on page
13 for more information.
Block Diagram
The simplied block diagram above illustrates the basic signal architecture of the Z8MK3. Only the routing and logic for one zone
output is shown. The architecture of the Z4MK3 is identical, the only difference being the number of zone outputs.
Z4-8MK3 Installation and User Guide v1.2 7
Description of front panel
4 53
8
MK3
Eight Zone Venue Mixer
Mute
Power
6 7
Microphone 1
Microphone 2
Paging Mic Level
Music Source
34
25
16
Music Level
0
0
3
2
1
0
Zone 1Zone 2Zone 3Zone 4Zone 5Zone 6Zone 7Zone 8
10
10
100 100 100 100 100 100 100 100
4
5
6
10
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
12810 109
Note - The front panel of the Z8MK3 is shown above. The Z4MK3’s is identical, except that it only has controls for Zones 1 - 4.
1. MUSIC SOURCE – 6-way rotary switch selecting which Line Input (1 to 6) will be the music source for each zone.
See page 15.
2. MUSIC LEVEL – adjusts the music level in each zone. See page 15.
3. MICROPHONE 1 – adjusts the level of the microphone connected at Mic 1 input in each zone. See page 15.
4. MICROPHONE 2 – adjusts the level of the microphone connected at Mic 2 input in each zone. See page 15.
5. PAGING MIC LEVEL – adjusts the level of the microphone connected at the Paging Mic input in each zone. This is
a preset control and is intended to be set on installation and not readjusted by the user. See page 16.
6. POWER – latching push-button switch with integral green LED.
7. MUTE – red LED which illuminates when an external Music Mute command is applied (i.e., from re control panel,
etc.) See page 14.
8. Zone idents – a space is provided below each zone’s controls for printed labels identifying the zone by name.
9. Source idents – a space is provided beside Zone 1’s source select control for printed labels identifying each music
source by name.
10. Rack mounting ears - the unit may be rack-mounted in a standard 19” equipment rack. It requires 3U of rack height.
See page 10.
Z4-8MK3 Installation and User Guide v1.28
Description of rear panel
12
10
11
5 5 87
13
14 16
24
3 6 9 15
1
Note - The rear panel of the Z8MK3 is shown above. The Z4MK3’s is identical, except that it only has output connections for
Zones 1 - 4.
1. LINE INPUTS – 6 pairs of RCA (phono) sockets (Line 1 to Line 6) for connection of music sources. Inputs are
stereo, summed internally to mono. See page 10.
2. LINE INPUT GAIN – preset trim control for each input, providing ±10 dB of gain adjustment for input level matching.
See page 15.
3. MIC INPUTS – 2 balanced microphone inputs (Mic 1 & Mic 2) on 3-pin 3.81 mm-pitch screw-terminal connectors.
See page 11.
4. MIC GAIN – preset mic gain control for each input, gain range 10 to 60 dB. See page 15.
5. MIC EQ – HF & LF preset EQ controls. See page 15.
6. PAGING MIC INPUT – dedicated balanced input (3-pin 3.5 mm-pitch screw-terminal connector) for paging mic. See
page 12.
7. PAGING MIC GAIN – as [4]. See page 16.
8. PAGING MIC EQ – as [5]. See page 16.
9. PAGING MIC ACCESS PORT – 6-pin (Z4MK3) or 10-pin (Z8MK3) 5 mm-pitch screw-terminal connector for per-
zone contact closure paging access. See page 12.
10. ZONE OUTPUTS – 8 balanced outputs* for each zone on 3-pin 3.5 mm-pitch screw-terminal connector.
See page 11.
11. ZONE EQ – HF & LF EQ adjustment for each zone output. See page 16.
12. FACILITY PORT – 8-pin RJ45 per-zone, for connection of remote input modules and other functions. See page 12.
13. REMOTE SOURCE + LEVEL PORTS – 3-pin 5 mm-pitch screw terminal connector per-zone, for connection of
RL-1/RSL-6 remote control plates. See page 13.
14. MUSIC CONTROL SWITCHES – determine whether front panel music source controls will remain active when
remote control plates are connected (per-zone). See page 14.
15. MUSIC MUTE – 2-pin 5 mm-pitch screw terminal connector for connection of external emergency muting relay
(e.g., re control panel). See page 14.
16. MAINS – Fused IEC receptacle for AC mains (includes storage for spare fuse). See page 10.
* Only 4 zone outputs on Model Z4MK3 (Items [10] to [14])
Z4-8MK3 Installation and User Guide v1.2 9
INSTALLATION
SCN
Balanced outputs (XLRs):
Hardware Considerations
The Z4MK3 and Z8MK3 Zone Mixers are built in 3U-high 19”
rack mount enclosures. It is recommended that the Zone
Mixer is installed in a 19” rack wherever possible. The units
are approx. 160 mm deep, but 250 mm of rack depth should
be available to allow for rear connectors and cabling.
The Z4MK3 and Z8MK3 have low power consumption and
there are no thermal considerations other than ensuring that
the ventilation grilles are not obstructed once the mixer is
installed. The ventilation grilles are at the rear (immediately
above the AC input connector); in the bottom panel (behind
the AC mains switch), and in the left-hand side panel. Other
equipment may be installed above or below the Z4MK3/Z8MK3
within this constraint.
The choice of location will be dictated by the specics of
the system and building layout. It is recommended that
wherever possible, the Z4MK3/Z8MK3 should be mounted in
an equipment rack along with as many of the music sources
(CD players, music servers, TV receiver boxes, etc.) and audio
power ampliers (driving the zone loudspeakers) as practical.
System Connections
Music Sources
Connect the system’s various music sources to LINE 1 to
LINE 6. All line inputs offer unbalanced connection for stereo
sources on a pair of standard RCA jacks (phono sockets).
The sensitivity range available should allow most standard
items of audio equipment such as computers/tablets, music
servers and media receivers, etc., to operate at a satisfactory
level. Most equipment of this type will have stereo unbalanced
outputs, and as long as the source equipment is adjacent to
the Zone Mixer, normal phono-phono (or 3.5 mm jack-to-
phono) leads can be used. Always avoid using pre-made leads
of an unnecessary length.
Mono and stereo sources:
The Z4MK3 and Z8MK3 are mono mixers; the stereo line
inputs are summed internally to mono. Stereo sources should
be connected in a normal stereo conguration, using both L
and R inputs. If connecting a mono source with only a single
output, it may be connected to either the left or the right
input.
When deciding the Zone Mixer’s location, bear in mind that
access to it will probably be required even if a full complement
of remote controls is being tted as part of the system, as
some adjustments can only be made on the mixer itself.
Power Supply
The European versions of the Z4MK3 and Z8MK3 operate on
standard 230 V AC mains; alternative versions are available
which operate on 115 V AC. An IEC mains cable with a plug
appropriate for each country is supplied with the European
unit. The unit’s power consumption is 20 VA (Z4MK3) or
28 VA (Z8MK3)
Fuses and ratings
The only user-accessible fuse is an AC mains fuse in the IEC
connector housing. Only replace a fuse with one of
exactly the same type. The table below gives the correct
fuse types.
MODEL VERSION RATING FUSE TYPE
Z4MK3
Z8MK3
The fuseholder may be accessed by prising the slide below the
connector open, using a small screwdriver. The holder has an
extra cavity for storing a spare fuse; note that the “active” fuse
is that in the inner cavity.
230 V 100 mA 20 mm x 5 mm slo-blo T100mA
115 V 200 mA 20 mm x 5 mm slo-blo T200mA
230V 125 mA 20 mm x 5 mm slo-blo T125mA
115V 250 mA 20 mm x 5 mm slo-blo T250mA
Balanced sources:
If it is necessary to connect an item of source equipment with
a balanced output to the Zone Mixer, a balancing transformer
should ideally be connected between the source and the
unbalanced input. Suitable audio transformers, which should
have a ratio of 1:1, are readily available from major audio
component suppliers. The transformer(s) should be mounted
as close to the Zone Mixer as practical, and housed in a
screened enclosure if they are not individually screened. The
preferred connection method is shown below.
pin1 ground
pin2 hot
pin3 cold
LEFT
3
12
RIGHT
3
12
-
+
SCN
-
+
SCN
Audio balancing transformer s
-
+
SCN
-
+
SCN
SCN
LEFT
Unbalanced
inputs
RIGHT
Unbalanced
inputs
If transformers are not available, a balanced source may feed
an unbalanced input directly as long as care is taken over how
the connections are made. A variety of design techniques are
in use to implement balanced outputs in audio equipment,
and some designs require different wiring protocols to others.
Installers are advised to check the manuals with each item
for guidance on how the outputs should be connected to an
unbalanced input.
However, the following wiring methods will work in a large
number of cases. If hum or other distortion is found to result,
try disconnecting the ‘cold’ leg of the balanced output (pin 3
on XLRs).
Z4-8MK3 Installation and User Guide v1.210
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