CXV-225 & CXV-425
AMPLIFIERS
Installation and User Guide
Contents |
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Safety Information......................................... |
4 |
Safety Notes Regarding Installation........................ |
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Conformities............................................................... |
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Safety Considerations and Information................. |
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General Description...................................... |
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Applicable Models...................................................... |
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Schematic Diagram....................................... |
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Front Panel Description................................ |
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Rear Panel Description................................. |
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Installation...................................................... |
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Mechanical.................................................................... |
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Ventilation.................................................................... |
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Connections and Adjustments................................ |
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Inputs............................................................................. |
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Sensitivity and Gain Control................................. |
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Input Routing............................................................ |
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Remote Control of Level...................................... |
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Outputs........................................................................ |
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Protection............................................................... |
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High Pass Filters.................................................... |
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VCA Cards (optional)............................................. |
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Installation ............................................................. |
10 |
BOSE® Equalisation Modules (Optional)........... |
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Installation............................................................... |
11 |
General Notes.............................................. |
11 |
EMC Considerations............................................... |
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Earthing....................................................................... |
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Technical Specifications.............................. |
12 |
General Specifications................................. |
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Location of Internal Jumpers and |
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Connectors................................................... |
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CXV-225 connector and jumper details............. |
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CXV-425 connector and jumper details............. |
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CXV-225 & CXV-425 User Manual v1.0 |
3 |
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 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 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.
•• 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.
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 CXV Series was developed and manufactured with high quality materials and components, which can be recycled and/or reused.
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 - HighVoltages
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 qualified 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 20 mm x 5 mm.
Caution - 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 bolts/screws identical to the original parts.
4 CXV-225 & CXV-425 User Manual v1.0
General Description
The Cloud CXV-225 and CXV-425 are high power
(250W/ch),multi-channel audio amplifiers intended for use with high quality PA and background music systems in offices, hotels, factories, leisure facilities and other commercial and industrial premises.
They are designed to drive 100 V line speaker systems directly, and have no low-impedance outputs. Low impedance loudspeakers can only be connected to these amplifiers with the use of an intermediate 100 V line transformer. Loudspeakers designed for such ‘installed-sound’ applications will normally include an integral transformer, typically with selectable output power taps. If you have any doubt about the suitability of this amplifier for the speaker system it is to be connected to, please verify that the speakers are of the 100 V line type with the manufacturer.
Unlike traditional 100V line amplifier designs,the CXV-225 and CXV-425 do not employ an output transformer.This produces a considerable saving in weight and a significant improvement in audio quality.
Applicable Models
This manual describes the installation and operation of the following models:
•• Cloud CXV-225 2-channel amplifier –
2 x 250 W, 2U 19” rack unit
•• Cloud CXV-425 4-channel amplifier –
4 x 250 W, 3U 19” rack unit
Apart from the number of channels and the units’ physical dimensions and power consumption figures,the two models are otherwise identical for the practical purposes of installation and operation.
Schematic Diagram
CXV-225 |
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LEVEL |
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CXV-425 |
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fig.1: CXV Series schematic diagram |
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CXV-225 & CXV-425 User Manual v1.0 |
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