Cloud Electronics 36-50 User Manual
36-50 MULTI-ZONE
MIXING AMPLIFIER
Installation and User Guide
36-50 Installation and User Guide V1.0
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.
WARNING: SHOCK HAZARD – DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE – 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.
36-50 Installation and User Guide V1.02
IMPORTANT SAFETY INSTRUCTIONS
1. Read these Instructions.
2. Keep these Instructions.
3. Heed all Warnings.
4. Follow all Instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturers’ instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus (including ampliers) that
produce heat.
9. 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. When the provided plug does not t into your outlet, consult an electrician for replacement of
the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point
where they exit from the apparatus.
11. Only use attachments/accessories specied by the manufacturer.
12. 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-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. 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.
Do not expose the apparatus to dripping or splashing, and ensure that no objects lled with water, such as vases, are
placed on the apparatus.
L’appareil ne doit être exposé aux écoulements ou aux éclaboussures et aucun objet ne contenant de liquide, tel
qu’un vase, ne doit être placé sur l’appareil.
The mains plug is used as the disconnect device and it should remain readily accessible during intended use. In order
to isolate the apparatus from the mains, the mains plug should be completely removed form the mains outlet socket.
Le prise du secteur ne doit pas être obstruée ou doit être facilement accessible pendant son utilisation. Pour être
complètement déconnnecté de l’alimentation d’entrée, la prise doit être débranchée du secteur.
This apparatus is of Class 1 construction and must only be connected to a mains outlet socket with a protective
earthing connection.
Terminals marked with the symbol may use Class 2 Wiring, but voltages at these terminals may be of sufcient
magnitude to constitute a risk of electric shock. The external wiring connected to these terminals requires
installation by an instructed person or the use of pre-made leads or cords.
36-50 Installation and User Guide V1.0 3
Contents
IMPORTANT SAFETY INSTRUCTIONS ................................................................................... 3
SAFETY INFORMATION ............................................................................................................. 6
Safety Notes regarding Installation ............................................................................................................................ 6
Conformities ................................................................................................................................................................... 6
Safety Considerations and Information .................................................................................................................... 6
Caution – High Voltage .............................................................................................................................................. 6
Caution – Mains Fuse ................................................................................................................................................ 6
Caution – Servicing .................................................................................................................................................... 6
OVERVIEW ..................................................................................................................................... 7
Introduction .................................................................................................................................................................... 7
Scope of this manual ..................................................................................................................................................... 7
What’s in the box .......................................................................................................................................................... 7
36-50 Main features ....................................................................................................................................................... 7
Optional system components ..................................................................................................................................... 8
RL-1 Series Remote Music Level Control............................................................................................................. 8
RSL-6 Series Remote Music Level/Source Control ............................................................................................ 8
PM Series microphones ............................................................................................................................................. 8
Block Diagram ................................................................................................................................................................ 9
Front panel description ........................................................................................................................................... 10
Rear panel description ............................................................................................................................................11
INSTALLATION ........................................................................................................................... 12
Hardware considerations ...........................................................................................................................................12
Power Supply ................................................................................................................................................................ 12
Fuses and ratings .......................................................................................................................................................12
System connections .....................................................................................................................................................12
Music sources ............................................................................................................................................................ 12
Microphone input .....................................................................................................................................................13
Paging system connections .....................................................................................................................................13
Music control .............................................................................................................................................................14
Music Mute .................................................................................................................................................................15
Speaker outputs (Lo-Z) ...........................................................................................................................................15
Speaker outputs (100/70 V-line operation) ......................................................................................................... 15
36-50 Installation and User Guide V1.04
SETTING UP & OPERATION .................................................................................................... 16
Music Inputs ..................................................................................................................................................................16
Gain & level ................................................................................................................................................................16
Local/remote control ............................................................................................................................................... 16
Microphone input ........................................................................................................................................................ 17
Phantom power ........................................................................................................................................................ 17
Gain & level ................................................................................................................................................................17
EQ ................................................................................................................................................................................17
High-pass lter .......................................................................................................................................................... 17
Zone and Utility outputs ............................................................................................................................................17
EQ ................................................................................................................................................................................17
Utility output settings .............................................................................................................................................. 17
High-pass lters ........................................................................................................................................................17
Priorities ........................................................................................................................................................................ 18
Mic-over-Music priority ........................................................................................................................................... 18
Line 6 priority ............................................................................................................................................................18
OPTIONS AND ADDITIONAL INFORMATION..................................................................... 19
RL-1 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
Fitting the CXL-3120 transformer module ........................................................................................................... 20
APPENDIX ................................................................................................................................... 21
Table of internal jumpers and default settings .......................................................................................................21
PCB jumper locations .............................................................................................................................................. 22
EMC considerations ....................................................................................................................................................22
Ground loops ............................................................................................................................................................22
TECHNICAL SPECIFICATIONS ............................................................................................... 23
GENERAL SPECIFICATIONS .................................................................................................... 23
36-50 Installation and User Guide V1.0 5
SAFETY INFORMATION
Safety Notes regarding Installation
• Do not expose the unit to water or moisture.
• Do not expose the unit to naked ames.
• Do not block or restrict any air vent.
• Do not operate the unit in ambient temperatures above
35°C
• Do not touch any part or terminal carrying the hazardous
live symbol while power is supplied to the unit.
• Do not perform any internal adjustments unless you
are qualied to do so and fully understand the hazards
associated with mains-operated equipment.
• The unit has no user-serviceable parts. Refer servicing to
qualied service personnel.
• If the moulded plug is cut off the AC power lead for
any reason, the discarded plug is a potential hazard and
should be disposed of in a responsible manner.
Safety Considerations and
Information
The Cloud 36-50 must be earthed. Ensure that the mains
power supply provides an effective earth connection using a
three-wire termination.
Caution – High Voltage
Do not touch any part or terminal carrying the hazardous live
symbol while power is applied to the unit. Terminals to
which the hazardous live symbol refers require installation by
a qualied person.
Caution – Mains Fuse
The 36-50 contains no user-replaceable fuses. Mains overcurrent protection is provided by the fuse in the IEC
receptacle; only replace this fuse with one of an identical
type and rating. If the replacement fuse blows immediately it
indicates that the mixing amplier has developed a fault, which
should be referred to competent service personnel.
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
Caution – Servicing
The unit contains no user-serviceable parts. Refer servicing to
qualied 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.
36-50 Installation and User Guide V1.06
OVERVIEW
Introduction
Thank you for purchasing this Cloud Multi-Zone Mixing
Amplier. We are condent that you will be pleased with its
performance, features, exibility and reliability.
The Cloud 36-50 is a three-zone (two primary zones plus a
Utility output), analogue audio mixing amplier. It combines
simple control of background music with versatile microphone
paging and power amplication in a single unit. It is suitable
for use in many types of premises, including pubs, bars, clubs,
shops, ofces, hotels, etc. It is compatible with Cloud PM
Series paging microphones and is also designed to interface
with most third-party paging microphones conforming to
industry standards.
• Cloud 36-50 (or 36-50T) Multi-Zone Mixing Amplier
• IEC mains lead (AC cord) with moulded plug appropriate
to the territory
• Set of mating connectors for all rear panel multi-pin
screw-terminal connectors
• Set of rubber feet, with xing screws
• Miniature multi-blade adjustment tool
36-50 Main features
• Mixing Amplier for two or three zones (Zone 3 via
Utility output)
• Utility output can be used for a third zone, secondary
areas, or can double power output available for Zone 1
Scope of this manual
This manual provides a comprehensive guide to the features
and functionality of the Cloud 36-50 Multi-Zone Mixer
Amplier. The 36-50 is available in two versions, the 36-50 and
36-50T. The two models are identical in facilities and features,
and differ only in that the 36-50T includes a factory-tted
and pre-wired CXL-3120 transformer module for 70 V-line
operation (can be altered to 100 V-line operation).
Please read through the manual to become fully acquainted
with the various conguration and control functions the
36-50 offers.
The manual is arranged as follows:
• Overview – introduction to the 36-50 and its
options.
• Installation – wiring the 36-50 in a practical
situation.
• 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 36-50 manual includes basic information on interfacing
Cloud PM Series paging microphones and connecting
Cloud RL-1 Series and RSL-6 Series remote control plates.
Full installation information for each of these options is
supplied with the items themselves.
Thank you again for placing your condence in Cloud products.
What’s in the box
Unpack the 36-50 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.
• Six (unbalanced) stereo line inputs with individual gain
trim controls
• Front panel user controls for music source, music level
and mic level in each zone
• Balanced mic input; 15 V phantom power selectable
• Contact closure access port for paging zone selection
• Switchable mic-over-music priority (Automatic Voice
Over)
• Selectable LINE 6 priority per-zone, with choice of
release times
• 3 x 50 W power output (lo-Z operation)
• Rear panel adjustments for: i) mic input sensitivity and
HF/LF EQ, ii) zone output HF/LF music EQ, iii) utility
output music and mic level
• Optional internal CXL-3120 3-channel 70/100 V
transformer module can be retrotted to convert 36-50
to 36-50T
• Optional external CXL-40T 70/100 V toroidal
transformers available for use with any or all outputs
• Selectable 65 Hz high-pass lter per-output (for use with
70/100 V transformers)
• Music Mute control input (N/O or N/C) to interface to
emergency system
• Compatible with standard Cloud remote control plates:
RL Series (music level) and RSL Series (music level and
source selection), per-zone
• Optional EQ cards available to suit various popular
installation loudspeakers may be tted to any or all
outputs
• 2U 19” rack-mounting unit
• Convection cooled – silent in operation
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.
36-50 Installation and User Guide V1.0 7
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.
RL-1 Series Remote Music Level Control
5
6
4
3
2
1
0
MUSIC LEVEL
7
8
9
10
RL-1
Cloud PM Series paging microphones may be connected
directly to the 36-50 using the mic input and access port.
Models are available which can page to 4, 8, 12 or 16 zones,
and also to 4 or 8 zones with storage for built-in spot
announcements. As the 36-50 only supports three zones, not
all zones on any of the models can be accommodated by a
single 36-50; the PM4 and PM4-SA (4-zone) models are most
likely to be useful. See page 13 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 36-50’s REMOTE SOURCE + LEVEL ports. See
page 14 and page 19 for more information.
RSL-6 Series Remote Music Level/
Source Control
345
2
1
SOURCE SELECT
3
2
1
MUSIC LEVEL
6
5
6
4
0
7
8
9
10
RSL 6-
The Cloud PM1 paging microphone is also compatible with
the 36-50. It is a much simpler unit which addresses a single
zone (though zones may be paralleled for wider access). See
page 14 for more information.
The RSL-6 Series is a range of plates allowing local (per-zone)
music source selection as well as music level control. They are
the same size as the RL-1s, and connect in a similar way. See
page 15 and page 19 for more information.
PM Series microphones
36-50 Installation and User Guide V1.08
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