Cloud Electronics MPA60 User Manual
MPA SERIES
MIXER-AMPLIFIER
Installation and User Guide
Contents
Safety Information ........................................ 4
Safety Notes regarding Installation ........................4
Conformities .................................................. 4
Safety Considerations and Information ................4
Caution - High Voltages ............................................ 4
Caution - Mains Fuse ................................................4
Caution - Servicing .................................................... 4
General Description ...................................... 5
Schematic Diagram ...................................... 5
Front Panel Description ............................... 6
Rear Panel Description ................................. 6
Music Inputs ................................................... 7
Sensitivity & Gain Control ....................................... 7
Music Source Select ..................................................7
Music Level Control .................................................. 7
Remote Control of Music Source .........................7
Select and Level .......................................................... 7
General Notes ............................................. 11
Multi-zone Applications ..........................................11
EMC Considerations ...............................................11
Earthing ......................................................................11
Ventilation .................................................................. 11
Technical Specications .............................. 12
Location of internal jumpers, etc. .............. 13
Factory Default Jumper Settings ...........................13
Music Equalisation ......................................... 8
Music Priority ................................................ 8
Microphone Inputs ........................................ 8
Gain Control ...............................................................8
Microphone Access Input ......................................... 8
Front Panel Microphone Level Controls ..... 8
Microphone Equalisation .............................. 8
Microphone Priority ...................................... 9
Microphone over music priority ............................9
Mic 1 over Mics 2-4 priority ...................................9
Chime ............................................................. 9
Power Amplier Stage and Outputs............ 9
Line Output .................................................................9
Low impedance operation ....................................... 9
High pass lter ..........................................................10
Music Mute(Fire Alarm Interface) ............. 10
Bose® Equalisation Modules ..................... 10
Installation Instructions ..........................................10
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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
35OC.
• 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 mains lead for any
reason, the discarded plug is a potential hazard and
should be disposed of in a responsible manner.
For more detailed information refer to the rear of the manual.
Safety Notes
Safety Considerations and Information
The unit must be earthed. Ensure that the mains power
supply provides an effective earth connection using a threewire termination.
When the mains switch is in the off ‘O’ position the live
and neutral conductors of the mains transformer are
disconnected.
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.
The fuse body size is 20mm x 5mm.
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.
Conformities
This product conforms to the following European EMC
Standards:
BS EN 55103-1:1997
BS EN 55103-2:1997
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 60065:2002
The MPA Series was developed and manufactured with high
quality materials and components, which can be recycled
and/or reused.
The WEEE symbol indicates that
electrical and electronic equipment
must be disposed of separately from
normal waste at the end of its
operational lifetime.
Only reassemble the unit using bolts/screws identical to the
original parts.
Please dispose of this product by taking it to your local
collection point or recycling centre.
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General Description
The Cloud MPA Series is a range of mixer-ampliers with applications in Licensed, Retail, Leisure and similar venues.
Three models are available to suit different output power requirements (60, 120 or 240 watts); otherwise all models have
identical facilities.
The mixer-ampliers have inputs for six stereo line signals and four microphone signals. Front panel controls are provided
for music source selection, music level and microphone levels. All pre-set controls are located on the rear panel with further
conguration jumpers mounted on the main PCB.
A remote level control or combined level control/music source selector can be wired to the unit for installations that require
remote control.
Schematic Diagram
g.1: MPA Series Schematic Diagram
MPA Series User Manual v1.2 5
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