Cloud CX261 Installation And User Manual
CX261 Installation and User Guide v1.5
CX261
MP3/Zone Mixer
Installation and User Guide
CX261 Installation and User Guide v1.5
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Contents
SAFETY INFORMATION ............................................................................................................. 4
Important Safety Instructions ..................................................................................................................................... 4
Conformities ................................................................................................................................................................... 4
Safety Considerations and Information .................................................................................................................... 5
OVERVIEW ..................................................................................................................................... 6
Introduction .................................................................................................................................................................... 6
What’s in the box .......................................................................................................................................................... 6
Main Features .................................................................................................................................................................. 6
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
Front panel MP3 input ............................................................................................................................................. 11
Microphone inputs ...................................................................................................................................................11
Paging Access Control ............................................................................................................................................. 11
Main Output ..............................................................................................................................................................12
MOH/Auxiliary Output ........................................................................................................................................... 12
Music Control ...........................................................................................................................................................12
Music Mute .................................................................................................................................................................13
SETTING UP & OPERATION .................................................................................................... 14
Music Inputs .................................................................................................................................................................. 14
Gain & level ................................................................................................................................................................ 14
Front panel MP3 input ............................................................................................................................................. 14
Local/remote control ............................................................................................................................................... 14
Music EQ .................................................................................................................................................................... 15
Music Limiter ............................................................................................................................................................. 15
Microphone Inputs ......................................................................................................................................................15
Phantom Power .........................................................................................................................................................15
Gain & level ................................................................................................................................................................ 15
EQ ................................................................................................................................................................................ 15
High Pass Filter ..........................................................................................................................................................15
Microphone Limiter ................................................................................................................................................. 16
Use of Mic 1 input with a telephone system ......................................................................................................16
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Main Outputs ................................................................................................................................................................ 16
Stereo/mono operation ..........................................................................................................................................16
MOH/Auxiliary Output ........................................................................................................................................... 16
Source Selection .......................................................................................................................................................16
Priorities ........................................................................................................................................................................16
Line 6 priority ............................................................................................................................................................16
Microphone Priorities ..............................................................................................................................................17
Microphone Over Music Priority .......................................................................................................................... 17
Mic 1 Over Mic 2 Priority ......................................................................................................................................17
OPTIONS AND ADDITIONAL INFORMATION..................................................................... 18
RL-1 Series and RSL-6 Series remote control plates – general considerations ............................................18
Control of music source and level via external DC ......................................................................................... 18
Fitting loudspeaker EQ cards .................................................................................................................................... 19
APPENDIX ................................................................................................................................... 20
PCB jumper location and settings ............................................................................................................................20
Ground loops ...............................................................................................................................................................21
EMC considerations .................................................................................................................................................... 21
Technical Specications ..............................................................................................................................................22
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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 tipover.
• 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.
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 CHOQUE ÉLECTRIQUE - NE PAS OUVRIR
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 2000 m, 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 2000 m.
L’évaluation pour les appareils est basée uniquement sur une
altitude inférieure à 2000 m, 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 2000 m.
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
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Safety Considerations and
Information
The unit must be earthed. Ensure that the mains power
supply provides an effective earth connection using a threewire termination.
CAUTION – High Voltages
Do not touch any part or terminal carrying the hazardous live
symbol while power is supplied to the unit.
Terminals to which the hazardous live symbol refers require
installation by a qualied person.
CAUTION - Mains Fuse
Replace the mains fuse only with the same type and rating as
marked on the rear panel.
Fuse type: T1AH 250 V
Fuse rating: 1 A
Fuse Size: 20 mm x 5 mm.
CAUTION – Servicing
The unit contains no user serviceable parts. Refer servicing to
qualied service personnel. Do not perform servicing unless
you are qualied to do so.
Disconnect the power cable from the unit before removing
the top panel and do not make any internal adjustments with
the unit switched on.
Only reassemble the unit using bolts/screws identical to the
original parts.
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OVERVIEW
Introduction
The Cloud CX261 is a 1U rack-mounting stereo audio mixer
intended for use in multi-use areas where simple control of
high-quality background music needs to be combined with a
exible range of paging options.
The CX261 mixes any one of six stereo line inputs with one
or two microphone inputs. Separate controls for music and
mic levels are provided, and music source selection and level
may be controlled remotely if wished, either using standard
Cloud remote control plates, or from an AV control system
(e.g., Crestron, AMX, etc.). As well as the main output, there
is a transformer-isolated mono auxiliary output which is
suitable for providing a MOH (Music On Hold) output to a
telephone system.
The mixer may be congured to operate with most paging
systems: either mic input may be activated by voice (VOX)
or short-to-ground access connections, and MIC 1 may have
priority over MIC 2 if wished. Also, one line input may have
priority over any other selected to facilitate connection of a
digital sound store or similar device.
A front panel 3.5 mm jack input permits easy connection of a
portable MP3 player, laptop or similar, with independent level
control.
A switchable isolating transformer congures MIC 1 input
for direct connection to a telephone system, enabling paging
messages to originate from an extension.
EQ cards to suit various installed-sound loudspeakers may be
tted to either or both channels.
A Music Mute input is provided to allow external systems
such as re alarm panels to disable background music in the
event of an emergency. This is a function that may be required
by Local Authority regulations.
What’s in the box
Unpack the CX261 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 CX261 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
• Stereo mic/line mixer for installed audio applications
• Six (unbalanced) stereo line inputs with individual gain
controls
• Two electronically balanced mic inputs
• Front panel control of music source/level and both mic
levels
• Front panel input (3.5 mm jack) for MP3 player, etc., with
gain control (overrides rear panel LINE 1 input) and
LED level indication
• Separate HF & LF EQ adjustments for music and mic
sources
• Bi-colour LEDs to aid mic gain adjustment
• MIC 1 input congurable as transformer-isolated line
input (with separate gain control) for connection to
phone system
• MIC 1 priority over MIC 2 (selectable)
• Short-to-ground access connector or VOX-triggered
voice-over-music priority on both MIC 1 and MIC 2
inputs
• Selectable LINE 6 priority with choice of release times
• Music Mute control input (N/O or N/C) for interface to
emergency system
• Compatible with standard Cloud remote control plates:
RL-1 Series (music level) and RSL-6 Series (music level
and source selection)
• Electronically-balanced stereo main output
• Mixer can be congured by internal jumper for mono
operation
• Transformer-isolated mono auxiliary output for use with
telephone MOH systems
• Aux output source selection (internal jumper) – follows
main output or always LINE 2
• Optional speaker EQ cards available
• 1U 19” rack mounting unit
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Block Diagram
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Description of front panel
1
2
3
4
10
11
7 12
5
6
8
9
1
12
1. MUSIC SOURCE – selects one of Music inputs L1 to L6.
2. MUSIC LEVEL – adjusts level of selected Music input.
3. LOCAL/REMOTE LED – indicates (green) when remote source selection is enabled.
4. MP3 input – 3.5 mm stereo jack socket for connection of non-permanent external source.
5. MP3 GAIN – adjusts gain of the MP3 input.
6. LINE 1/MP3 LED – indicates (green) when the MP3 input is enabled.
7. SIGNAL INDICATOR – 3 LEDs (green/yellow/red) indicating level of MP3 input.
8. MIC 1 LEVEL – adjusts level of Mic input 1.
9. MIC 2 LEVEL – adjusts level of Mic input 2.
10. MUSIC MUTE – indicates (red) when external Music Mute is active.
11. POWER – green LED, conrms power is applied to the unit.
12. Rack mounting ears – the unit may be rack-mounted in a standard 19” equipment rack. It requires 1U of rack height.
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