Cloud MA40F User manual

[
-iji 'ii
_________________ I ~~!!!E= __
MA40F & MA40T
Mini Amplifiers
rl....... .IC LINE' LJNEZ LF HF
.....v........ :J;i;k. ,"", :"'< :J;i;k. :J;i;k.
@ 1l!ilIMl@!?0 0 0 ~~ .::'@.~~l@l;.:~. :~~. @
~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~
".1....... .c LJlIE' •••• Z LF HF
.....v........ -i;i;!r ,'" '" ,""-i;i;!r
@ [lIjJ1!.\~'jj' 000 ,;l""'~~: .::'®;~ ~. :~. @
Installation and User Guide
MA40F/MA40T Installation and User Guide vl.O

WARNING:
To reduce the risk of fire or electric shock, do not expose this appliance to rain or
moisture.
A
WARNING: SHOCK HAZARD - DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE - NE PAS
OUVRIR
The lightning flash with the arrowhead symbol
within an equilateral triangle, is intended
to alert you to the presence of uninsulated
dangerous voltages within the product's
enelosure that may be of sufficient 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.
2 MA40F/MA40T Installation and User Guide vl.O

[
-i -ili::
_ __'5_
IMPORTANT SAFETY INSTRUCTIONS
I. Read these Instructions.
2. Keep these Instructions.
3. Heed allWarnings.
4. Follow all Instructions.
s. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not bleek any ventilation openings. Install in accordance with the
manufacturer's instructions.
8. Do not install near any heat sourees such as radiators, heat registers, stoves or
other apparatus (including amplifiers) 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 fit 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.
I I. Only use attachments/accessories specified by the manufacturer.
12.
®
-
Use only with the cart, stand, tripod, bracket or table specified by
the manufacturer or sold with the apparatus, when a cart is used,
use caution when moving the cartlapparatus 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 qualified 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 spilied or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture, does not operate normally, or
has been dropped.
MA40F/MA40TInstallation and User Guide vl.O 3

A Do not expose the apparatus to dripping or splashing, and ensure that
.a no objects filled with water, such as vases, are placed on the apparatus.
L'appareil ne doit pas être exposé aux écoulements ou aux éclaboussures et aucun
objet ne contenant de liquide, tel qu'un vase, ne doit être placé sur I'objet.
The mains plug is used as the disconnect device and it should remain
readily accessible during intended use.ln order to 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 I'alimentation
d'entrée, la prise doit être débranchée du secteur.
Terminals marked with the ~ symbol may use Class 2 Wiring, but
voltages at these terminals may be of sufficient magnitude to
constitute a risk of electric shock. The external wiring connected to
these terminals requires installation byan instructed person or the use
of pre-made leads or cords.
4 MA40F/MA40T Installation and User Guide vl.O

[
-i -ili::
_ __'5_
Contents
IMPORTANT SAFETY INSTRUCTIONS 3
SAFETY INFORMATION 7
SafetyNotes regarding Installation 7
Conformities 7
RoSHandWEEE declaration 8
SafetyConsiderations and Information 9
Mains Fuse 9
Servicing 9
OVERVIEW 10
Introduction 10
Applicable Models 10
MA40F/MA40T mainfeatures I I
What's in the Box 12
BLOCK DIAGRAM 13
FRONT PANEL DESCRIPTION 14
REAR PANEL DESCRIPTION 15
INSTALLATION 17
Mechanical 17
Ventilation 18
Connections and adjustments 19
Line inputs 19
Sensitivity & Gain Control 20
Music Leveland EQ control 20
Line I Priority 20
Mic inputs 21
Balancedinput 21
701 IOOVline input 22
Mic gainadjustment 23
Microphone levelcontrol 23
Pagingcontrol and mic priority 23
Output 25
Lo-Z output (MA40F only) 25
Connecting to 100170/25 V line systems(MA40T only) 25
Facility Port 26
MA40F/MA40TInstallation and User Guide vl.O 5

Connecting an LM-2 or BT-I 28
Connecting an RL or RSLSeries remote control plate 30
Using the Facility Port as an auxiliary input 31
Control of music souree and level via external DC 31
Music Mute Input 33
Auto Power Down 34
Loudspeaker EQ cards 34
Installation Instructions 35
APPENDIX 36
PCB layout diagram 36
Table of internal jumpers and default settings 37
Summary of rear panel DIP switch functions 38
EMC considerations 40
Earthing 40
Technical specifications 41
6 MA40F/MA40T Installation and User Guide vl.O

[
-i -ili::
_ __'5_
SAFETY INFORMATION
Safety Notes regarding Installation
Do not expose the unit to water or moisture.
Do not expose the unit to naked flames.
Do not block or restriet 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 t while
power is supplied to the unit.
Do not perform any internal adjustments unless you are qualified to do so and
fully understand the hazards associated with mains-operated equipment.
The unit has no user-serviceable parts. Refer servicing to qualified service
personnel.
Ifthe 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 aresponsibie manner.
Conformities
This product conforms to the following European EMC Standards:
BS EN 55103-1:2009
BS EN 55103-2:2009
CE
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 standards:
BS EN 60065:2002 (+A2:2010)
UL60065
This product is compliant with the relevant provisions of:
Energy Star® EligibilityCriteria Ver 3.0 for Audio-Video products.
MA40F/MA40TInstallation and User Guide vl.O 7

RoSH and WEEE declaration
Cloud Electronics Limited manages its business and collaborates with its suppliers
to comply with the European Union restriction of the use of certain hazardous
substances in electrical and electronic equipment, RoSH Directive (2002/95/EC),
that came into force on I st July 2006, and similar restrictions in other jurisdictions.
The "crossed out wheelie bin" symbol on the product and represented
above is there to remind users of the obligation of selective collection
of waste. This label is applied to various products to indicate that the
product is not to be thrown away as unsorted municipal waste. At the
end of life,dispose of this product by returning it to the point of sale or
to your local municipal collection point for recycling of electric and electron ic
devices.
Customer partlcipation IS Important to rrururruze the potential effects on the
environment and human health that can result from hazardous substances that may
be contained in this product.
Please dispose of this product and its packaging in accordance with local and national
disposal regulations, including those governing the recovery and recycling of waste
electrical and electron ic equipment. Contact your local waste administration, waste
collection company or dealer.
8 MA40F/MA40T Installation and User Guide vl.O

[
-i -ili::
_ __'5_
Safety Considerations and Information
The MA40F and MA40T are powered byan external DC supply.A separate Power
Supply Unit (PSU) is supplied with the amplifier. The PSU must be earthed. Ensure
that the mains power supply provides an effective earth conneetion using a three-
wire termination.
Mains Fuse
The PSU is a sealed unit and contains no user-replaceable fuses. Mains over-current
proteetion is provided by the fuse in the AC mains plug, which should be rated at
SA.
Servicing
The unit contains no user serviceable parts. Refer servicing to qualified service
personnel. Do not perform servicing unless you are qualified 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
either the original bolts/screws, or ones identical to the original parts
MA40F/MA40T Installation and User Guide vl.O 9

OVERVIEW
Introduction
The MA40F and MA40T are very compact mono amplifiers designed for integration
into audio and AV systems where de-centralised installation is advantageous. They
are intended as "install-and-forget" components, and are small enough to be fitted
into wall or ceiling voids or in any convenient location adjacent to projectors, flat
screen displays or loudspeakers. A simple set of controls and configuration options
makes them easy to integrate into any audio system.They are highly suitable for use
with in-store digital signage, gallery and museum exhibits and fixed or mobile tour
guide systems.
The MA40F can deliver 40W (mono) into a 4 ohm load, while the physically larger
MA40T includes an output transformer, enabling it to drive 100 V, 70 V or 25 V
line loudspeaker systems. In all other respects, the two models are identical. There
are two unbalanced inputs for line level signals (typically music sources) and a
balanced mic input for paging/announcement use. An alternative mic input allows
the amplifier to be fed with paging/announcements from a 70/ IOOVline loudspeaker
system. Front panel preset-type controls are provided for music level, microphone
levels and music EQ. There are also various preset adjustments and configuration
DIP switches on the rear panel, and jumpers mounted internally on the main PCB.
A remote input module or remote level control can be wired to the amplifier's
Facility Port, which can also be used as an additional line input.
Applicable Models
This Installation Guide describes the installation and operation of the following
modeis:
• Cloud MA40F
• Cloud MA40T 40W mono amplifier for 4 ohm loudspeakers
40 W mono amplifier for 100/70125V line loudspeaker
systems
The two models differ in physical size, the MA40T being larger in order to
accommodate the internal line output transformer.Apart from the inclusion of this
transformer, the two models are essentially identical for the practical purposes of
installation and operation. Unless specifically stated otherwise, the information in
this Guide may be taken to apply to either model.
10 MA40F/MA40T Installation and User Guide vl.O

[
-i -ili::
_ __'5_
NOTE: Amplifier models MA40 and MA40E are NOT covered by this Guide, and
when installing either of these modeis, reference should only be made to the Guides
specific to them.
MA40F/MA40T main features
• Two unbalanced stereo line inputs with individual sensitivity trims
• Electronically-balanced mic input with separate gain control
• 12V phantom power selectable by internal jumper
• Front panel control of music level and mic levels
• HF & LF EQ adjustments for music sourees
• MIC input configurable for direct connection to I00/70 V line system: allows
MA40F/T to receive announcements from main building PAiVAsystem
• MIC input can be used with paging mics
• Paging configurable as automatic voice-over-music (VOX mode) or contact
closure via access port
• Selectable LlNE l-over-LiNE 2 priority
• Facility port for conneetion of LM-2 remote mic/line input module via
screened Cat 5 cable; also allows remote control of music level
• 40 W power amplifier
• Two versions available: MA40F with low-impedance output, MA40T with
internal transformer for driving 100/70/25 V line systems
• Music Mute control input (N/O or N/C) for interfacing to an emergency
system
• Selectable 65 Hz high-pass filter for use with 100/70125V line systems
• Optional EQ cards available to suit various popular installation loudspeakers
• Automatic power-down function (user-selectable)
• Less than IW power consumption in sleep mode
• Convection cooled - silent in operation.
• PSU meets US DoE LevelVI energy requirements
• Power requirements:
• MA40F: 12 to 24V DC, 60W
• MA40T: 24 V DC, 60 W
• Universal AC adaptor included (both modeis), operates from 100 to 240 VAC
MA40F/MA40TInstallation and User Guide vl.O I I

Available Options:
• RL Series remote control plates for music volume
• RSLSeries remote control plates for Line I/Line 2 selection and music volume
• LM-2 remote mic/line input module with music volume control
• BT-I Bluetooth wireless audio input module
• EQ cards to match various popular installed-sound loudspeakers
What's in the Box
Please check the shipping carton for damage before opening. If there is damage,
please contact your Cloud agent and the shippers.
The packing carton should contain the following items:
• MA40F or MA40T amplifier
• External PSU (AC mains adaptor)
• IEC mains lead (AC cord) with moulded plug appropriate to the territory
• Set of mating plug-in screw-terminal connectors
• Set of four self-adhesive polyurethane feet
• This manual
12 MA40F/MA40T Installation and User Guide vl.O

I~I 111
I~
1~lIllllItlll
I ~
100V
MA40T
OUTPUT
FACILITY '
PORT

FRONT PANEL DESCRIPTION
~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~
LEVEL controls:
I. MIC - sets volume of signal at the PAGE/MIC input
2. LlNE I - sets volume of signal at the LlNE I input
3. LlNE 2 - sets volume of signal at the LlNE 2 input
EQ controls:
4. LF - LF EQ adjustment of music channel: +/-10 dB @100 Hz
S. HF - HF EQ adjustment of music channel: +/-10 dB @5 kHz
6. POWER - bi-colour LED: illuminates green when the amplifier is active and
red when the amplifier is inAutomatic Power Down mode
7. MUTE - red LED:illuminates when the MUSle MUTE function is active
8. PEAK - red LED:illuminates ifthe amplifier's dynamic clip proteetion becomes
active
14 MA40F/MA40T Installation and User Guide vl.O

[
-i -ili::
_ __'5_
REAR PANEL DESCRIPTION
I~I~~II~=II~~I~~II ~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~
I. LlNE land LlNE 2 - stereo line inputs for music sourees (unbalanced)
2. GAIN - two preset level trim controls (+/-10 dB) for each line input
3. MIC - balanced mic input
4. 70/1 OOVLlNE - alternative high-voltage input, for conneetion to 70/ IOOVline
speaker systems
5. PAIOV- external paging access contacts input for Mic input
6. GAIN - preset gain control for mic input; range + I0 to +50 dB
7. FACILITY PORT - RJ45 socket for conneetion of remote input/control
modules such as the LM-2 and BT-I; it is also possible to connect an RL-lor
RSL-6 remote control plate to this port
8. SPEAKER OUTPUT (MA40F only) - speaker output for low-impedance
circuits
9. SPEAKER OUTPUT (MA40T only) - for connection to 100/70125 V line
loudspeaker system
MA40F/MA40T Installation and User Guide vl.O 15

10. MUSle MUTE - conneet to external NfO or NfC contacts for remote
muting of music sourees
I I. SETTINGS - five-pole DIP switch for setting various amplifier configurations:
SWITCH FUNCTION
I MIC mode - configures MIC input for paging use
2 Enables mic-over-music priority
3 Selects paging priority mode - VOX or SW (SW = contact closure)
4 Enables LlNE l-over-LiNE 2 priority
5Enables remote control functions of Facility Port and disables front
panel LlNE level controls
See also "Summary of rear panel DIP switch functions" on page 38 in the
Appendix section for full details.
12. POWER INPUT - conneet external DC power here:the MA40F requires 12
to 24 Vat 2.5 A;the MA40T requires 24 Vat 2.5 A.
16 MA40F/MA40T Installation and User Guide vl.O

[
-i -ili::
_ __'5_
INSTALLATION
Mechanical
The compact size and light weight of the MA40F and MA40T combined with their
high energy efficiency allows them to be installed in almost any location. They can
be easily placed in ceiling or wall voids, or fitted to the rear of display screens or
loudspeaker cab inets.
Both models of amplifier have mounting flanges with keyhole slots to permit them
to be secured on a horizontal or vertical flat surface.
~.'~ .
~r-'--------------------------------------'-r~
~ 200 mm ------------------_.I
7.9"
MA40F
10 mm
0.4"
MA40F/MA40TInstallation and User Guide vl.O 17

10 mm
l
~r-r--------------------------------------------------------r-.~
~ 28Jmm ~
11.14"
10 mm
0.4··
MA40T
1
I
I
.,
If using the MA40F/MA40T in a free-standing situation, the self-adhesive feet
(supplied with each amplifier) should be fitted.The amplifier should always be stood
on a flat surface. Care should be exercised in selecting alocation for a free-standing
unit, which should allow ventilation but be clear of any liquid or similar hazard.
Ventilation
The amplifiers use natural convection cooling, and care should be taken to locate
them where airflow is unrestricted (e.g., not under ceiling insulation material).
Consideration should also be given to ease of access, should the operational
configuration or audio levels need adjustment after installation.
In free-standing installations, always fit the polyurethane feet supplied, and do not
stand any other items on top of the unit.
18 MA40F/MA40TInstallationand User Guide vl.O

[
-i -ili::
_ __'5_
Connections and adjustments
Line inputs
The unit has two stereo line inputs a, each of which is mixed internally to mono;
these inputs are suitable for most music sources such as CD/DVD players, satellite
receivers and computer line outputs.
Both inputs are unbalanced and use 3-pin 3.5 mm-pitch screw terminal connectors.
The connectors should be wired as follows:
L
IGHTCHANNEL
AUDIO
SOURCE1 LEFTCHANNEL
LlNE2
LlNE 1
[
LEFTCHANNEL
AUDIO
SOURCE2 RIGHTCHANNEL
Unless a Cloud remote control plate or module such as the RSL-6 or LM-2 is in
use, the two line inputs are summed together internally, though Line input I can be
configured to have priority over Line input 2, see "Line I Priority" on page 20.
MA40F/MA40T Installation and User Guide vl.O 19

Sensitivity & Gain Control
Each of the stereo line inputs has an input impedance of 10kohms and a preset type
gain control on the rear panel adjacent to the input soekets 11. The gain contrals
have a range of 20 dB allowing the input sensitivity to be varied from -12 dBu to
+8 dBu (0 dBu = 0.775 Vrms). The gain contrals should be set so that the input
sou rees in use do not distort, and the front panel level contrals 0 and 0 have a
useful range.
Musie level and EQ eontrol
The front panel LlNE land LlNE 2 contrals 0 and 0 should be adjusted during
installation to set the volume of the audio sou rees. The line inputs are summed
post the level controls; equalisation can be applied using the front panel LF and HF
contrals • and 0, which can apply a cut or boost of up to 10 dB at 50 Hz and
10kHz respectively.Adjust the EQ contrals to suit the audio programme material
being used, the speaker characteristics and the room acoustics. If the programme
material includes speech, the EQ should be adjusted for best intelligibility.
Ifthe line input levels are set too high,the amplifier's dynamic proteetion will activate
to prevent clipping and the front panel PEAK LED 0 will illuminate to indicate this.
Note that this LED also indicates an excessive mie signal level.
Line I Priority
Wh en both line inputs are in use, one audio souree can be given automatic priority
over the other by connecting it to Line I input and setting rear panel SETTINGS
DIP switch 4 (LiNE I PRI) to ON. This is a useful facility when a Digital Sound
Store, emergency announcement system or similar sou ree forms part of the audio
system.
Wh en Line I Priority is enabled, the amplifier will route the input signal at Line 2
normally until a signal is detected at Line I's input. When this happens, it switches
its music souree automatically to Line I. Once the signal at Line I stops (e.g., when
an announcement finishes), Line 2's souree will smoothly restore to its former level
over approx. 3 seconds.
20 MA40F/MA40T Installation and User Guide vl.O