Cloud MA40F Mini Amplifiers Installation Guide
- June 13, 2024
- CLOUD
Table of Contents
Cloud MA40F Mini Amplifiers
MA40F & MA40T Mini Amplifiers
Product Information
- Model: MA40F/MA40T
- Installation and User Guide version: v1
- Product Description: Mini Amplifiers
- Warning: To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture.
- 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 enclosure 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.
Product Usage Instructions
- Read these instructions.
- Keep these instructions.
- Heed all warnings.
- Follow all instructions.
- Do not use this apparatus near water.
- Clean only with a 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 amplifiers 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 is provided for your safety. When the provided plug does not fit 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 specified by the manufacturer.
- 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 cart/apparatus combination to avoid injury from tip-over.
- Unplug this apparatus during lightning storms or when unused for long periods of time.
- 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 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 filled with water, such as vases, are placed on the apparatus.
- 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 from the mains outlet socket.
- Terminals marked with the symbol may use class 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 by an instructed person or the use of pre-made leads or cords.
MA40F & MA40T Mini Amplifiers
Insta ation and s r id
MA40F/MA40T Installation and User Guide v1.
WARNING: o reduce the ris of re or electric shoc do not e pose this appliance
to rain or moisture.
WARNING: SHOCK HAZARD DO NOT OPEN AVIS: RISQUE DE CHOC ELECTRIQUE NE PAS
OUVRIR
he lightning ash with the arrowhead sym ol within an equilateral triangle is
intended to alert you to the presence of uninsulated dangerous voltages within
the product s enclosure that may e of suf cient magnitude to constitute a ris
of electric shoc .
he e clamation 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.
MA40F/MA40T Installation and User Guide v1.
I PORTANT SA ET INSTR CTIONS
1. Read these nstructions.
2. eep these nstructions.
3. eed all arnings.
4. ollow all nstructions.
5. Do not use this apparatus near water.
6. lean only with a dry cloth.
7. Do not loc any ventilation openings. nstall in accordance with the manufacturer s instructions.
8. Do not install near any heat sources such as radiators heat registers stoves or other apparatus including ampli ers that produce heat.
9. Do not defeat the safety purpose of the polari ed or grounding – type plug. polari ed plug has two lades with one wider than the other. grounding type plug has two lades and a third grounding prong. he wide lade or the third prong are provided for your safety. hen the provided plug does not t into your outlet consult an electrician for replacement of the o solete outlet.
10. rotect the power cord from eing wal ed on or pinched particularly at plugs convenience receptacles and the point where they e it from the apparatus.
11. nly use attachments accessories speci ed y the manufacturer.
se only with the cart stand tripod rac et or ta le speci ed y
the manufacturer or sold with the apparatus when a cart is used
use caution when moving the cart apparatus com ination to avoid
in ury from tip-over.
13. nplug this apparatus during lightning storms or when unused for long
periods of time.
14. Refer all servicing to quali ed service personnel. ervicing is required
when the apparatus has een damaged in any way such as power-supply cord or
plug is damaged liquid has een spilled or o ects have fallen into the
apparatus the apparatus has een e posed to rain or moisture does not operate
normally or has een dropped.
MA40F/MA40T Installation and User Guide v1.
Do not e pose the apparatus to dripping or splashing and ensure that no o ects
lled with water such as vases are placed on the apparatus. L appareil ne doit
pas tre e pos au coulements ou au cla oussures et aucun o et ne contenant de
liquide tel qu un vase ne doit tre plac sur l o et.
he mains plug is used as the disconnect device and it should remain readily
accessi le during intended use. n order to isolate the apparatus from the
mains the mains plug should e completely removed from the mains outlet soc et.
La prise du secteur ne doit pas tre o stru e ou doit tre facilement accessi le
pendant son utilisation. our tre compl tement d connect de l alimentation d
entr e la prise doit tre d ranch e du secteur.
erminals mar ed with the sym ol may use lass iring ut voltages at these
terminals may e of suf cient magnitude to constitute a ris of electric shoc .
he e ternal wiring connected to these terminals requires installation y an
instructed person or the use of pre-made leads or cords.
MA40F/MA40T Installation and User Guide v1.
Cont nts
I PORTANT SA ET INSTR CTIONS
SA ET IN OR ATION
afety otes regarding nstallation……………………………………………………………… 7 onformities
……………………………………………………………………………………………….. 7 Ro and EEE declaration
…………………………………………………………………… 8 afety onsiderations and
nformation………………………………………………………. 9
ains use ………………………………………………………………………………………………. 9 ervicing
…………………………………………………………………………………………………… 9
O ER IEW
ntroduction……………………………………………………………………………………………….. 10 pplica le odels
……………………………………………………………………………………… 10
main features …………………………………………………………………… 11 hat s in the o
……………………………………………………………………………………… 12
OC DIA RA
RONT PANE DESCRIPTION
REAR PANE DESCRIPTION
INSTA ATION
echanical …………………………………………………………………………………………………. 17
entilation ………………………………………………………………………………………………….. 18
onnections and ad ustments…………………………………………………………………… 19
Line inputs………………………………………………………………………………………………. 19
ensitivity ain ontrol…………………………………………………………………… 20
usic Level and E control………………………………………………………………… 20
Line 1 riority………………………………………………………………………………………. 20
ic inputs……………………………………………………………………………………………….. 21
alanced input ……………………………………………………………………………………… 21
1 line input ……………………………………………………………………………….. 22
ic gain ad ustment……………………………………………………………………………… 23
icrophone level control…………………………………………………………………….. 23
aging control and mic priority …………………………………………………………… 23
utput ……………………………………………………………………………………………………. 25
Lo- output
only ………………………………………………………………….. 25
onnecting to 1
line systems
only …………………….. 25
acility ort…………………………………………………………………………………………….. 26
MA40F/MA40T Installation and User Guide v1.
onnecting an L – or -1 ………………………………………………………………. 28 onnecting an RL or R L
eries remote control plate ……………………… 30 sing the acility ort as an au iliary
input………………………………………… 31 ontrol of music source and level via e ternal D
…………………………… 31 usic ute nput……………………………………………………………………………………. 33 uto ower
Down…………………………………………………………………………………. 34 Loudspea er E
cards…………………………………………………………………………… 34 nstallation nstructions
……………………………………………………………………….. 35 APPENDI layout
diagram……………………………………………………………………………………. 36 a le of internal umpers and
default settings ………………………………………. 37 ummary of rear panel D switch functions
…………………………………………… 38 E considerations ………………………………………………………………………………….. 40
Earthing………………………………………………………………………………………………………. 40 echnical speci cations
……………………………………………………………………………… 41
MA40F/MA40T Installation and User Guide v1.
SA ET IN OR ATION
afety otes regarding nstallation
· Do not e pose the unit to water or moisture.
· Do not e pose the unit to na ed ames.
· Do not loc or restrict any air vent.
· Do not operate the unit in am ient temperatures a ove 3 °C.
· Do not touch any part or terminal carrying the ha ardous live sym ol while
power is supplied to the unit.
· Do not perform any internal ad ustments unless you are quali ed to do so and
fully understand the ha ards associated with mains-operated equipment.
· he unit has no user-servicea le parts. Refer servicing to quali ed service
personnel.
· f the moulded plug is cut off the power lead for any reason the discarded
plug is a potential ha ard and should e disposed of in a responsi le manner.
onformities
his product conforms to the following European E BS EN 55103-1:2009
BS EN 55103-2:2009
tandards:
his product has een tested for use in commercial and light industrial
environments. f the unit is used in controlled E environments the ur an
outdoors heavy industrial environments or close to railways transmitters
overhead power lines etc. the performance of the unit may e degraded. he
product conforms to the following European electrical safety standards:
BS EN 60065:2002 (+A2:2010)
UL60065 his product is compliant with the relevant provisions of:
En r Star E i i i it Crit ria r or A dio id o rod cts.
MA40F/MA40T Installation and User Guide v1.
RoS and WEEE d c aration
loud Electronics Limited manages its usiness and colla orates with its suppliers
to comply with the European nion restriction of the use of certain ha ardous
su stances in electrical and electronic equipment Ro Directive
E
that came into force on 1st uly 6 and similar restrictions in other urisdictions.
he crossed out wheelie in sym ol on the product and represented a ove is there to remind users of the o ligation of selective collection of waste. his la el is applied to various products to indicate that the product is not to e thrown away as unsorted municipal waste. t the end of life dispose of this product y returning it to the point of sale or to your local municipal collection point for recycling of electric and electronic devices.
ustomer participation is important to minimi e the potential effects on the environment and human health that can result from ha ardous su stances that may e contained in this product.
lease dispose of this product and its pac aging in accordance with local and national disposal regulations including those governing the recovery and recycling of waste electrical and electronic equipment. ontact your local waste administration waste collection company or dealer.
MA40F/MA40T Installation and User Guide v1.
afety onsiderations and nformation
he
and
are powered y an e ternal D supply. separate ower
upply nit
is supplied with the ampli er. he must e earthed. Ensure
that the mains power supply provides an effective earth connection using a three-
wire termination.
ains s
he is a sealed unit and contains no user-replacea le fuses. ains over-current
protection is provided y the fuse in the mains plug which should e rated at 5
A.
S r icin
he unit contains no user servicea le parts. Refer servicing to quali ed
service personnel. Do not perform servicing unless you are quali ed to do so.
Disconnect the power ca le from the unit efore removing the top panel and do
not ma e any internal ad ustments with the unit switched on. nly reassem le
the unit using either the original olts screws or ones identical to the
original parts
MA40F/MA40T Installation and User Guide v1.
O ER IEW
ntroduction
he
and
are very compact mono ampli ers designed for integration
into audio and systems where de-centralised installation is advantageous. hey
are intended as install-and-forget components and are small enough to e tted
into wall or ceiling voids or in any convenient location ad acent to pro ectors at
screen displays or loudspea ers. simple set of controls and con guration options
ma es them easy to integrate into any audio system. hey are highly suita le for use
with in-store digital signage gallery and museum e hi its and ed or mo ile tour
guide systems.
he
can deliver
mono into a ohm load while the physically larger
includes an output transformer ena ling it to drive 1
or
line loudspea er systems. n all other respects the two models are identical. here
are two un alanced inputs for line level signals typically music sources and a
alanced mic input for paging announcement use. n alternative mic input allows
the ampli er to e fed with paging announcements from a 1 line loudspea er
system. ront panel preset-type controls are provided for music level microphone
levels and music E . here are also various preset ad ustments and con guration
D switches on the rear panel and umpers mounted internally on the main .
remote input module or remote level control can e wired to the ampli er s
acility ort which can also e used as an additional line input.
pplica le odels
his nstallation uide descri es the installation and operation of the following
models:
· loud · loud
mono ampli er for ohm loudspea ers
mono ampli er for 1
line loudspea er
systems
he two models differ in physical si e the
eing larger in order to
accommodate the internal line output transformer. part from the inclusion of this
transformer the two models are essentially identical for the practical purposes of
installation and operation. nless speci cally stated otherwise the information in
this uide may e ta en to apply to either model.
MA40F/MA40T Installation and User Guide v1.
NOTE mpli er models
and
E are
covered y this uide and
when installing either of these models reference should only e made to the uides
speci c to them.
main features
· wo un alanced stereo line inputs with individual sensitivity trims
· Electronically- alanced mic input with separate gain control
· 1 phantom power selecta le y internal umper
· ront panel control of music level and mic levels
·
L E ad ustments for music sources
·
input con gura le for direct connection to 1
line system: allows
to receive announcements from main uilding
system
·
input can e used with paging mics
· aging con gura le as automatic voice-over-music
mode or contact
closure via access port
· electa le L E 1-over-L E priority
· acility port for connection of L – remote mic line input module via
screened at ca le also allows remote control of music level
·
power ampli er
· wo versions availa le:
with low-impedance output
with
internal transformer for driving 1
line systems
· usic ute control input
or
for interfacing to an emergency
system
· electa le 6 high-pass lter for use with 1
line systems
· ptional E cards availa le to suit various popular installation loudspea ers
· utomatic power-down function user-selecta le
· Less than 1 power consumption in sleep mode
· onvection cooled silent in operation.
·
meets DoE Level energy requirements
· ower requirements:
·
: 1 to D 6
·
: D6
· niversal adaptor included oth models operates from 1 to
MA40F/MA40T Installation and User Guide v1.
vaila le ptions:
· RL eries remote control plates for music volume · R L eries remote control
plates for Line 1 Line selection and music volume · L – remote mic line input
module with music volume control · -1 luetooth wireless audio input module · E
cards to match various popular installed-sound loudspea ers
hat s in the o
lease chec the shipping carton for damage efore opening. f there is damage please contact your loud agent and the shippers.
he pac ing carton should contain the following items:
·
or
ampli er
· E ternal
mains adaptor
· E mains lead cord with moulded plug appropriate to the territory
· et of mating plug-in screw-terminal connectors
· et of four self-adhesive polyurethane feet
· his manual
MA40F/MA40T Installation and User Guide v1.
OC DIA RA
MA40F/MA40T Installation and User Guide v1.
RONT PANE DESCRIPTION
E E controls: 1. MIC sets volume of signal at the PAGE/MIC input 2. INE sets volume of signal at the INE input 3. INE sets volume of signal at the INE input
E controls:
L E ad ustment of music channel: -1 d 1
5. HF E ad ustment of music channel: -1 d
INDICATORS:
6. POWER – red LED flashing: illuminates under fault condition. Requires power cycling to reset POWER i-colour LED: illuminates green when the amplifier is active and red when the amplifier is in utomatic ower Down mode
7. MUTE red LED: illuminates when the
E function is active
8. PEAK red LED: illuminates if the amplifier s dynamic clip protection ecomes active
MA40F/MA40T Installation and User Guide v1.
REAR PANE DESCRIPTION
1. INE and INE stereo line inputs for music sources un alanced
2. AIN two preset level trim controls -1 d for each line input
3. IC alanced mic input
INE alternative high-voltage input for connection to 1 line
spea er systems
5. PA e ternal paging access contacts input for ic input
6. AIN preset gain control for mic input range 1 to d
7. ACI IT PORT R soc et for connection of remote input control modules such as the L – and -1 it is also possi le to connect an RL-1 or R L-6 remote control plate to this port
8. SPEA ER O TP T circuits
only spea er output for low-impedance
9. SPEA ER O TP T
only for connection to 1
line
loudspea er system
MA40F/MA40T Installation and User Guide v1.
10. SIC TE connect to e ternal
or
contacts for remote
muting of music sources
11. SETTIN S ve-pole D switch for setting various ampli er con gurations:
SWITC
1 2 3 4
NCTION
mode con gures input for paging use
Ena les mic-over-music priority
elects paging priority mode or
contact closure
Ena les L E 1-over-L E priority
5
Ena les remote control functions of acility ort and disa les front panel INE level controls
ee also ummary of rear panel D switch functions on page 3 in the ppendi section for full details.
12. POWER INP T connect e ternal D power here: the
to at . the
requires at . .
requires 1
MA40F/MA40T Installation and User Guide v1.
INSTA ATION
echanical
he compact si e and light weight of the
and
com ined with their
high energy ef ciency allows them to e installed in almost any location. hey can
e easily placed in ceiling or wall voids or tted to the rear of display screens or
loudspea er ca inets.
oth models of ampli er have mounting anges with eyhole slots to permit them to e secured on a hori ontal or vertical at surface.
10 mm 0.4″
200 mm 7.9″
144.3 mm 5.7″
73.5 mm 2.9″
25.4 mm 1″
10 mm 0.4″
MA40F
MA40F/MA40T Installation and User Guide v1.
10 mm 0.4″
10 mm 0.4″
283 mm 11.14″
144.3 mm 5.7″
73.5 mm 2.9″
25.4 mm 1″
MA40T
f using the
in a free-standing situation the self-adhesive feet
supplied with each ampli er should e tted. he ampli er should always e stood
on a at surface. are should e e ercised in selecting a location for a free- standing
unit which should allow ventilation ut e clear of any liquid or similar ha ard.
entilation
he ampli ers use natural convection cooling and care should e ta en to locate
them where air ow is unrestricted e.g. not under ceiling insulation material .
onsideration should also e given to ease of access should the operational con
guration or audio levels need ad ustment after installation.
n free-standing installations always t the polyurethane feet supplied and do
not stand any other items on top of the unit.
MA40F/MA40T Installation and User Guide v1.
onnections and ad ustments
in in ts
he unit has two stereo line inputs each of which is mi ed internally to mono
these inputs are suita le for most music sources such as D D D players
satellite receivers and computer line outputs.
oth inputs are un alanced and use 3-pin 3. mm-pitch screw terminal connectors.
he connectors should e wired as follows:
AUDIO SOURCE 1
RIGHT CHANNEL LEFT CHANNEL
LINE 1 0V L R
LINE 2
AUDIO SOURCE 2
LEFT CHANNEL RIGHT CHANNEL
nless a loud remote control plate or module such as the R L-6 or L – is in use the two line inputs are summed together internally though Line input 1 can e con gured to have priority over Line input see Line 1 riority on page .
MA40F/MA40T Installation and User Guide v1.
S nsiti it
ain Contro
Each of the stereo line inputs has an input impedance of 1 ohms and a preset
type gain control on the rear panel ad acent to the input soc ets . he gain
controls have a range of d allowing the input sensitivity to e varied from -1
d u to
d u d u . rms . he gain controls should e set so that the input sources in use
do not distort and the front panel level controls and have a useful range.
sic
and E contro
he front panel INE and INE controls and should e ad usted during
installation to set the volume of the audio sources. he line inputs are summed
post the level controls equalisation can e applied using the front panel and
controls and which can apply a cut or oost of up to 1 d at
and
1
respectively. d ust the E controls to suit the audio programme material
eing used the spea er characteristics and the room acoustics. f the programme
material includes speech the E should e ad usted for est intelligi ility.
f the line input levels are set too high the ampli er s dynamic protection
will activate to prevent clipping and the front panel PEA LED will illuminate
to indicate this.
ote that this LED also indicates an e cessive mic signal level.
in Priorit
hen oth line inputs are in use one audio source can e given automatic priority
over the other y connecting it to Line 1 input and setting rear panel SETTIN S
D switch INE PRI to . his is a useful facility when a Digital ound tore
emergency announcement system or similar source forms part of the audio
system.
hen Line 1 riority is ena led the ampli er will route the input signal at Line
normally until a signal is detected at Line 1 s input. hen this happens it
switches its music source automatically to Line 1. nce the signal at Line 1
stops e.g. when an announcement nishes Line s source will smoothly restore to
its former level over appro . 3 seconds.
MA40F/MA40T Installation and User Guide v1.
ic in ts
he
and
have a single microphone channel ena ling them to e
used for paging or announcements. y default the mic channel is independent and
is simply mi ed with the summed line inputs. he mic channel can e recon gured
so that it operates as a standard loud-type paging input with selecta le mic- over-
line priority and triggering y either contact closure or automatic signal detection.
t is then compati le with paging microphones using one selection y contact-
closure such as the loud range including the 1 single- one microphone. ee
page 3 for more details.
he mic channel has two separate physical inputs: a standard alanced input and a
high-level transformer-isolated input for connection to 1 line systems. oth
inputs and the connections for paging access are on the
-pin 3. mm-pitch
screw terminal connector PA E IC INP T.
he microphone signal path includes a ed high-pass lter. his attenuates the
response elow 1
which helps to reduce the effects of microphone handling
noise.
a anc d in t
he
s microphone pre-ampli er is an electronically alanced
transformer-less design con gured for optimum low noise performance. he input
impedance is greater than ohms and is suita le for microphones in the ohm to
6 ohm range. he connector uses three pins of the lower -pin 3. mm-pitch
screw terminal type on the rear panel . se the wiring shown elow.
70/100V LINE
0 70 0V PA
0 100 -+
SCREEN
COLD HOT
MA40F/MA40T Installation and User Guide v1.
1 phantom power is availa le at the mic input and is activated y setting internal umper 6 to the position. ee page 36 and page 3 for further information regarding the internal umpers. are should e ta en to ensure that phantom power is activated only when the microphone connected to the input requires it i.e. a capacitor or electret type other types of microphones such as dynamic may e damaged if a D voltage is applied to them.
in in t
he
and
are provided with an second alternative input to the mic
channel in the form of a transformer-isolated input which can e connected directly
to a
line or 1 line loudspea er system. his input can e used to route
paging announcements from a uilding-wide or
system into the area
covered y the
.
o use the high-voltage input simply connect the loudspea er system feed to either the line or 1 line input which use four pins of the upper -pin section of the connector as shown elow:
FEED FROM 100 V LINE SPEAKER SYSTEM +
–
- Alternative connection for 70 V line system shown in dashed lines
0 70
0 100
70/100V LINE
0V PA
-+
MA40F/MA40T Installation and User Guide v1.
Do not ma e any connections to the unused high-voltage input
or 1 .
loud recommend that no attempt is made to use oth the alanced and highvoltage inputs.
ic ain ad st nt
he mic input has a preset gain control ad acent to the input connector. his is
effective whichever of the two mic inputs is in use. he gain can e ad usted
over a range of d from 1 d to d .
icro on
contro
front panel level control is provided for the mic channel and this provides the
user with a means of ad usting the volume of the microphone or the announcements
from a
system if the 1 line inputs are in use. he rear panel gain
control should e set at a level where distortion does not occur even when the
front panel level control is fully cloc wise. f the mic level is set too high the front-
panel PEA LED will illuminate. ote that this LED also indicates e cessive
music level.
Pa in contro and ic riorit
he microphone channel can e recon gured to operate as a paging input with
SETTIN S D switches 1 and 3.
or normal non-paging operation all three switches should e . he priority
functions operate as descri ed elow whichever of the two mic inputs is in use
alanced or hi-voltage .
· witch 1 – PA E IC ODE: in the position
the mic input
operates as a standard microphone input. n this mode D switch 3 SW
O is disa led. n the position
E the mic input operates as a
typical loud paging input and D switch 3 is ena led. n E mode the
aging ccess contacts will need to e shorted in order for the mic input to
ecome active.
MA40F/MA40T Installation and User Guide v1.
· witch PA E IC PRI. ON O : set to to ena le ic-over-Line
priority. his can e selected in oth and E modes i.e. regardless
of the setting of D switch 1. he priority function will mute oth L E and
L inputs. n mode the priority trigger is always
in E
mode the priority can e either or type selected y D switch 3.
· witch 3 SW O : this switch is only ena led when D switch 1 is set
to . hen D switch 3 is
priority triggering is selected: a short
circuit at the aging ccess connector will trigger priority see elow for
wiring details muting any line input signals and ena ling the mic input. hen
set to
mode is selected: a signal at the mic input will trigger priority.
n order for mode to operate when D switch 1 is
E the
two pins of the aging ccess connector must e shorted together.
he aging ccess control input is on two pins PA and of the lower section of the E connector . he ccess input provides compati ility with contactclosure paging microphones. n E mode the microphone input is muted as long as the pins of the access connector are open-circuit. hen the pins are connected together the mic input ecomes active.
70/100V LINE
0 70
0 100
CONTACT CLOSURE (e.g., “Press-to-Talk” switch on paging mic) ACTIVATES PAGING
0V PA
-+
SCREEN
COLD HOT
Balanced mic input
n either or mode the music signal is faded ac up after the announcement is
complete over a period of appro . 3 seconds.
MA40F/MA40T Installation and User Guide v1.
Ot t
he power ampli er stage is fully protected against D offset over-current
overand under-voltage and is also thermally protected. ctivation of the
protection circuitry shuts the power ampli er stage down until the fault
condition clears. ll protection conditions will automatically self-clear if
the ampli er is power-cycled.
switch-on delay function mutes the output during power-up and power-down to
protect loudspea ers.
o o t t A on
he
will deliver its rated power of
into a ohm load when powered
y the e ternal supplied with the ampli er. he ma imum output power will e
reduced with lower supply voltages please refer to
datasheet for power
de-rating curve .
hen using multiple low-impedance loudspea ers generally ohms with a single ampli er series and parallel wiring should e employed to produce a total load impedance of not less than ohms.
he low impedance output is availa le at the -pin mm-pitch screw terminal SPEA ER O TP T connector on the rear panel .
Conn ctin to
in s st s A T on
he
is tted with an internal transformer ena ling it to directly drive 1
or line loudspea er systems. he power ampli er stage will deliver its
rated power of
when powered y the supplied with the ampli er. he
output voltage and hence the ma imum power availa le – will e reduced with
lower D supply voltages: with a supply voltage of 1 the ma imum output voltage
will e . lease refer to the
datasheet for power de-rating information.
hen driving 1
line loudspea er systems there is a ris of transformer
core saturation at high levels and low frequencies which can produce distortion.
o prevent this the
s output stage is provided with a switcha le
6 high-pass lter. e recommend that the lter is always ena led when the
ampli er is used with 1
line systems note that odel
is shipped
with the lter already ena led ut odel
is shipped with the lter disa led.
f odel
is used in con unction with an e ternal line transformer the lter
should e ena led.
he lter is ena led disa led y moving internal
diagram on page 36 for locations of
umpers.
umper 3. ee
layout
MA40F/MA40T Installation and User Guide v1.
aci it Port
and
ampli ers are provided with a ACI IT PORT in the form
of a rear panel R connector . he primary use of the acility ort is for the
connection of an L – or -1 remote active module ut it may also e used to
connect RL-1 and R L-6 eries remote control plates or as a general-purpose
au iliary alanced input see sing the acility ort as an au iliary input on
page 31 for more information on this application .
he active modules operate from D power supplied y the
. he current
consumed y each module is minimal and in the vast ma ority of installations there
will e no power supply issues.
I PORTANT n order for the remote control functions on an L – module or
an RL R L eries plate to operate SETTIN S D switch OCA RE OTE
must e set
RE E . his will disa le the front panel L E 1 and L E
controls and control of line level and or L E 1 L E selection will e availa le
from the remote module or plate. D switch should e left set to L L when
a -1 is connected to the acility ort.
he pinout of the acility ort connector is given in the ta le on the following page.
MA40F/MA40T Installation and User Guide v1.
PIN
1 2 3 4 5 6 7 8 GND
SE
udio cold phase udio hot phase riority control 1 0 V -1 usic level control to
1 usic source select control to 1
D ref for system music controls
Cat CORE
hite range range hite reen lue hite lue reen hite rown rown onnector shell
tandard wiring for pre-made ca les
MA40F/MA40T Installation and User Guide v1.
Conn ctin an
or T
MIC LEVEL
56 7
4
8
3
9
2
10
1 0
MIC INPUT
MUSIC LEVEL
56 7
4
8
3
9
2 1 0
10
MIC PRIORITY
LINE INPUT
3 2
1
4 5
6
56 7
4
8
3
9
2
10
1 0
LM-2
L-
STATUS
PUSH -TO – PAIR
2s
5s
BT-1
-1
he L – is an active input module which allows a microphone and a stereo line
input in a remote location to e connected to the
or
. he module
also includes the functions of a loud R L-6 Remote ontrol late which allows
remote control of the
s music level and selection of Line 1 or Line
as the music source.
MA40F/MA40T Installation and User Guide v1.
he -1 is a luetooth remote audio input module which ena les compati le porta le devices such as laptops ta lets and smartphones to stream audio wirelessly to the module and thus into the audio system of the area where the module is installed.
NOTE he
and
are only compati le with the -1 variant of the
-1: do not attempt to connect variant -1E.
he L – or -1 should e connected to the
s ACI IT PORT
using screened at ca le. ote that as the ca le carries analogue audio only
screened at should e used. he L – includes controls for local music level
and source selection the wiring for these functions eing catered for on the acility
ort. he ma imum total at ca le length should not e ceed 1 m.
he L – s upper is tted with an R connector la elled O TP T. onnect this to the ACI IT PORT using screened at ca le with screened R s at each end. ollow the colour coding shown in the ta le opposite. he metal screening of the connectors should e onded to the screen of the ca le. ull details can e found in the L – nstallation uide.
efore the L – s music source and level controls will operate set SETTIN S
D switch to RE E i.e. . n this setting the front panel INE and
INE controls ecome inoperative. ositions 3 to 6 on the L – s usic ource
switch have no function on the
selecting these positions will
effectively mute oth line inputs.
T he -1 has two s piggy- ac ed onto the rear of the faceplate. he
R output connector 1 is located on the upper . his should e connected
to the
s ACI IT PORT with screened at ca le and shielded
R plugs. ull details can e found in the -1 nstallation uide.
MA40F/MA40T Installation and User Guide v1.
Conn ctin an R or RS S ri s r ot contro at
and
ampli ers are also compati le with standard loud remote
control plates of the R L eries music source select and level and RL eries level
only . he
and
differ from most other loud products in that they
do not have a dedicated 3-pin Remote ontrol port: RL and R L eries plates
must instead e connected to the acility ort . his is most easily accomplished
y using screened at ca le etween the
and the remote control
plate ut only connecting the one or two cores concerned with the remote
control functions see page plus the screen to the plate.
RL-1 1 23
RL-1 REMOTE LEVEL CONTROL WIRING
FACILITY PORT (RJ45) 123 45678
WHITE + BROWN
SCREEN
SCREEN WHITE + BROWN
IGNORE ALL OTHER CORES
Screened Cat 5 cable
RSL-6 REMOTE SOURCE & LEVEL CONTROL WIRING
FACILITY PORT (RJ45) 123 45678
RSL-6
1 23
BROWN
SCREEN
WHITE + BROWN BROWN
SCREEN
WHITE + BROWN
IGNORE ALL OTHER CORES
Screened Cat 5 cable
MA40F/MA40T Installation and User Guide v1.
sin t aci it Port as an a i iar in t
he acility ort provides a alanced audio input. f a port is not connected to
a remote input module or remote control plate it may e used as an additional
alanced line input. he signal applied at the acility ort is mi ed with the other inputs
Line 1 L E and
ut has no independent level control on the ampli er the
signal level must e ad usted at the source. f ic-over-Line priority is ena led see
aging control and mic priority on page 3 a line input at the acility ort will
e muted in the same way as L E 1 and L E .
onnect an e ternal alanced source to the acility ort as shown elow:
BALANCED OUTPUT (e.g., XLR)
2
1
3
hot (+) cold (-)
Twin-core screened cable
hot (+) cold (-)
FACILITY PORT (RJ45)
1 2 3 4 5 6 7 8
n un alanced source may also e connected the use of alancing transformers is recommended.
Contro o sic so rc and
ia t rna DC
t may e necessary in some installations to ad ust the music level and select music
source from an e ternal control system e.g. restron
etc. . f the acility
ort is not required for a remote input module or control plate it may e used to
receive D voltages from the e ternal system to effect these ad ustments.
oth music source selection and level can e controlled with a D voltage of to
1 . Refer to the acility ort pinout at page : music source selection restricted
to L E 1 L E selection in the case of the
is controlled y
applying a D voltage to pin and music level y a D voltage at pin . he
reference for oth controls is via the screen of the shielded R connector.
MA40F/MA40T Installation and User Guide v1.
CONTROL SYSTEM
LEVEL CONTROL SOURCE CONTROL
0 V REF
FACILITY PORT
1 2 3 4 5 6 7 8
+12 V
4k7
10k
CONECTOR SHELL
0 V MUSIC VCA
MA40F/MA40T
MUSIC SOURCE SELECT
LINE 1 LINE 2
sic
usic level may e varied over its full range y applying a D voltage of etween
and 1 to pin of the R with the reference connected to the R shield. on pin
corresponds to ma imum level and 1 will produce 6 d of attenuation. he rate of
attenuation is appro imately 16 m d .
ote that there is an internal pull-up resistor etween pin and the internal 1
rail. f pin is left oating this pull-up will result in full attenuation. he
output impedance of the control voltage source should e low enough to overcome
the effect of this resistor.
MA40F/MA40T Installation and User Guide v1.3
sic so rc
L E 1 L E selection may e controlled y applying different D voltages to pin
the reference eing connected to the R shield. he ta le elow summarises
the effect of various D voltages at pin :
O TA E PIN
.3
. 6.
.
INE SE ECTION
oth Line 1 and Line are deselected this can e used as an e ternal mute
function Line selected
Line 1 selected
oth Line 1 and Line are selected and summed together
ote that there is an internal 1 pull-up resistor etween pin and the internal
1 rail. f pin is left oating this pull-up will cause
to e selected. he
output impedance of the control voltage source should e low enough to overcome
the effect of this resistor.
sic t In t
E ternal muting of music may e commanded through the SIC TE connector. ational
or Local uthority regulations governing installed audio systems may require
that normal programme material i.e. music should e muted in an emergency to
ensure that any evacuation messages are clearly audi le. hen active it mutes
all line inputs including that at the acility ort leaving the microphone
inputs active.
he usic ute input is on a -pin mm-pitch screw-terminal connector. t should e
connected to the appropriate alarm output on whichever uilding management
system registers the alarm typically the ire ystem . he alarm output must e
volt-free if no such output is availa le an intermediate relay or other
isolation device must e installed etween the alarm output and the usic ute
input.
MA40F/MA40T Installation and User Guide v1.3
he usic ute input can e set to operate on either normally open
or
normally closed
contacts via internal umper 1 see
layout diagram on
page 36 . he factory default setting is
thus requiring a short-circuit to e
applied across the two pins of the connector for muting to occur.
REMOTE MUSIC MUTE TERMINATIONS
MUSIC MUTE INPUT
1
2
MUSIC MUTE INPUT
1
2
RELAY RELAY
NORMALLY OPEN (NO) CONNECTION
NORMALLY CLOSED (NC) CONNECTION
A to Po r Do n
he
and
are e tremely energy-ef cient ampli ers ut can e made
even more so y ena ling the uto ower-Down feature. hen active the signal
level is constantly monitored and if no input signals are measured for 1 minutes
the ampli er enters a leep mode minimising power consumption. f a signal is
detected while the channel is in this mode the ampli er wa es up in less than
100 ms.
and
ampli ers are shipped with the uto ower Down function
disa led. t may e ena led y moving internal
umper . ee
layout
diagram on page 36 for details of umper locations.
o ds a r E cards
he
and
are compati le with single channel loudspea er equalisation
modules. E modules are availa le from loud Electronics to suit several popular
ranges of installed sound loudspea ers please chec current module availa ility at
www.cloud.co.u accessories.
MA40F/MA40T Installation and User Guide v1.3
Insta ation Instr ctions
Refer to the
layout diagram see
layout diagram on page 36 for the
location of the E module connector and its associated ypass umper .
o install an E module proceed as follows:
1. solate the ampli er from its D power source.
2. Remove the screws securing the top cover: there are two on the top and two on each side. Remove the cover.
3. Remove umper . e recommend stowing it on one of the header pins in case it ever needs to e replaced.
4. lug the loudspea er equalisation module into its 1 -pin connector
1
note that the connector has two notches on one side which engage with lugs
on the module s mating connector to ensure correct orientation.
5. Replace the top cover.
MA40F/MA40T Installation and User Guide v1.3
APPENDI
layout diagram
o access the internal disconnect the ampli er from its D power source and
remove the si screws securing the top cover remove the cover.
EQ CARD SOCKET
J2 J3
ON OFF
CON1
DO NOT
J5
J4 FIT A JUMPER
HERE!
OFF ON
J6
J1
NO NC
NOT TO SCALE. ONLY PRIMARY COMPONENTS SHOWN
REAR OF UNIT
MA40F/MA40T Installation and User Guide v1.3
Ta o int rna
rs and d a t s ttin s
PER P RPOSE
1 Music Mute E card ypass
OPTIONS
or resent a sent
3 6 hi-pass lter
or factory use only do not t a umper here
uto ower Down resent a sent
6
1 ic phantom power
DE A T
resent :
MA40T: ON sent
resent OFF
MA40F/MA40T Installation and User Guide v1.3
ummary of rear panel D switch functions
PER
1
E MODE
2
E PRIORITY
3
POSITION
O
IC ODE
E DE O PRIORIT O
RR
O SW
NCTION
oth
E
inputs function
as a standard microphone input
including
and LE EL
controls. D switch 3 is disa led.
oth E inputs function as a typical loud paging input. D switch 3 is ena led.
he mic signal is mi ed with the line inputs according to the front panel LE EL controls.
he mic signal will ta e priority over the line inputs including the acility ort which will e muted while the mic is in use. riority triggering will e determined y the settings of D switches 1 and 3: with switch 1 in E mode priority triggering is set y D switch 3.
he and pins of the E connector must e shorted
together to ena le the mic input and mute the line inputs.
signal at the
E
input
will trigger mic-over-line priority
and mute the line inputs. he
and pins of the E
connector must e permanently
shorted together for
operation in E mode disa led
in mode .
MA40F/MA40T Installation and User Guide v1.3
4
LINE 1 PRIORITY
5
LL REMOTE
O PRIORIT O RR RE E
ON OCA
n L L mode ref
the
signals at L E 1 and L E are
mi ed together. n RE E mode
L E 1 or L E is selected y
the
R E switch on
an R L plate or L – module
connected to the acility ort.
signal at L E 1 input has priority over that at L E : L E
is automatically muted.
he two front panel LE EL controls L E 1 and L E are disa led. he summed line input level is controlled y the level control on the remote plate or module connected at the acility ort. f an R L eries plate or L – module is in use the usic ource control can select either L E 1 and L E .
he levels of L E 1 and L E input signals are controlled y the two front panel
LE EL controls.
he two inputs are mi ed together.
ote: default settings are in O D te t.
MA40F/MA40T Installation and User Guide v1.3
E considerations
and
ampli ers fully conform to the relevant electromagnetic
compati ility E standards and are technically well ehaved. ou should
e perience no pro lems interfacing units to other items of equipment and under
normal circumstances no special precautions need to e ta en. f the unit is to
e used in close pro imity to potential sources of distur ance such as high
power communication transmitters radar stations and the li e it is suggested that
input signal leads e ept as short as possi le. lways use alanced interconnections
wherever possi le. e recommend that the
ampli er is not located
in close pro imity to a high-power ampli er or similar item of equipment which
may radiate a strong magnetic eld from its power transformer.
Earthing
hen several mains powered units are connected together via their signal ca les
there is a ris of one or more earth loops which may cause an audi le hum on
the system even with the gain controls set to minimum. he rail of an
ampli er is directly coupled to the chassis ground. o interconnection pro lems
should e encountered ut if there is any hum or other e traneous noise when
source equipment is connected the situation can generally e remedied y o
serving the following guidelines:
1. lways connect sources using alanced connections wherever possi le. ote
that for E reasons the ca le screen should e connected at oth ends.
2. se audio isolating transformers readily availa le from trade suppliers at
the inputs if necessary. hese will ensure that the ampli er is electrically
isolated from the source equipment.
3. he signal source units should e located as close as practical to the ampli
er. he metal housings of the various units should not e electrically
connected. ry to ensure that all interconnected units including power ampli
ers are
connected to a common power source to ensure a common ground is provided.
MA40F/MA40T Installation and User Guide v1.3
echnical speci cations
INE INP TS
requency Response Distortion ensitivity nput ain ontrol nput mpedance
eadroom
Noise Equalisation
ACI IT INP T
nput mpedance ensitivity
ICROP ONE INP T
requency Response Distortion
ain nput mpedance eadroom
Noise hantom ower
O TP T
utput ower 1 continuous sine wave
1 d
to
<0.1 %
. -1 d u to 1.
du
d range
1 ohms un alanced
1 d
– d L: 1 d
:1d 1
1 ohms alanced
.
du
-3d 1
lter to
1 d
<0.1%
1 d to d ohms alanced
1 d – d 1 internal umper
D input 1
MA40F/MA40T Installation and User Guide v1.3
ENERA
ower nput ower onsumption E ternal adaptor
mpli er rotection
MA40F Dimensions w h d
MA40T
MA40F eight
MA40T
: 1 to D 60 W
: D
niversal type 1 to
to 63
i ed level signal limiter
rotection against D
overcurrent ampli er
overcurrent over-temperature supply voltage under
over-voltage
Resetta le internal rea er no fuses
Net
mm 1 mm 1 . mm . 1.6 .
hipping
mm 16 mm 1 mm 11. 6.3 .3
Net
3 3 mm 1 mm 1 . mm 11. 1.6 .
hipping
mm 16 mm 3 mm 11. 6.3 1
Net
g
hipping
1. g
Net
1.6 g
hipping
1. g
MA40F/MA40T Installation and User Guide v1.3
MA40F/MA40T Installation and User Guide v1.
c o d co
c o d sa ro