background image

CX-A4

 I

NSTALLATION AND OPERATION MANUAL

  

 

16 General 

Specifications 

 

Inputs 

Balanced via 3 pin XLR type connector. 

Outputs 

Binding Posts for flexible cables up to 2.5mm² 

Protection 

VI limiting, DC offset, Thermal and Switch-on Delay 

Status 

LED indicators on each channel for Signal, Peak & Protect. 

Cooling 

Force cooled using two speed DC fan. 

Dimensions 

482.6mm x 88.0mm (2U) x 325.0mm deep (+ connectors) 

Weight 9kg 

net 

 
17 Technical 

Specifications 

 

Rated Output 

120-watts/4 ohm load 85-watts/8 ohm load. 

Bridged Output 

240 watts/8 ohm load 

Frequency Response 

±1dB 10Hz to 50kHz 

THD 

<0.005% 1kHz  <0.05% 20Hz/20kHz 8

 1dB below rated output 

VCA Module THD 

<0.03% 20Hz/20kHz 

Input Sensitivity 

0dBu (775mV) 

Input Impedance 

10k

 balanced / 5k

 unbalanced 

Noise   

>90dB below rated output. 

Slew Rate 

35V/µS (power amplifier) 

Power Input   

230V ±5% (115V ±5% available) 

Fuse rating 

 

230V - T4A H   

115V - T8A H 

 

 
 

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 equipment 
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 60065:1998

 

 

 

Safety Considerations and Information 

 

The unit must be earthed. Ensure that the mains power supply provides an effective earth 

connection using a three wire termination. 

 

When the mains switch is in the off ‘O’ position the live and neutral conductors of the mains 

transformer are disconnected, however some parts of the product will still remain connected to 

the live and neutral mains conductors 

 
 

15-07-02 V9 

Содержание CX-A4

Страница 1: ...Amplifier Installation User Guide V9 0 Cloud Electronics Limited 140 Staniforth Road Sheffield S9 3HF England Tel 44 0 114 244 7051 Fax 44 0 114 242 5462 E mail info cloud co uk Web site http www cloud co uk ...

Страница 2: ...s 2 4 Output Details 4 5 100V Line operation 4 6 Configuring the CX A4 for 100V Line operation 5 7 Bridged Mode Operation 5 8 Status Indicators 5 9 VCA Modules 6 10 Peak Limit VCA Modules 6 11 Remote Level Connections 6 12 Bose Equalisation Modules 7 13 Installing Optional Modules 7 14 Field Servicing 8 15 General Specifications 9 16 Technical Specifications 9 15 07 02 V9 ...

Страница 3: ... as two individual attenuators or can be linked to operate as a stereo pair with one remote level control 3 Installation The CX A4 is suitable for mounting in a standard 19 equipment rack and occupies two units of rack space Sufficient ventilation must be provided for the unit The amplifier draws cool air through the front panel and exhausts through the right side and care must be taken not to obs...

Страница 4: ...LEVEL CONTROL SOURCE SWITCHES INPUT AMPLFIER FROM MONO SOURCE FOUR CHANNELS DRIVEN FROM ONE MONO SOURCE 1 2 3 4 1 2 1 3 2 4 INPUT 1 1 2 3 4 POWER AMPLIFIER LEVEL CONTROL SOURCE SWITCHES INPUT AMPLFIER FROM STEREO SOURCE TWO STEREO PAIRS FROM ONE STEREO SOURCE INPUT 2 1 2 3 4 15 07 02 V9 ...

Страница 5: ...rmination will significantly increase cross talk It is also good practice to distance the output wiring from the input wiring Do not make any connections to the unit with the power cable attached 6 100V Line operation Connecting a CXL 100 100W 100V line module across an output of the CX A4 will obtain a 100W 100V line output from that channel The CXL 100 has to be mounted externally of the amplifi...

Страница 6: ... two channels should both to be set to the fully clockwise position The output load should then be connected between the two red binding posts of the relevant channels no connection to the black binding posts of the relevant channels You must ensure that the positive wire is connected to the first red binding post and the negative wire is connected to the second binding post Thus for example it is...

Страница 7: ... Thats 2150A VCA providing very low distortion and up to 90dB attenuation The VCA module can be wired to provide muting by using an auxiliary relay connected to a fire alarm control panel Note A VCA module cannot be installed to channels that already have a Bose equalisation module installed 11 Peak Limit VCA Modules A two channel peak limit VCA module is available see section 13 for installation ...

Страница 8: ...rear of the amplifier on the input PCB clearly marked on the PCB as CON X TO VCA MODULE where X is 1 or 2 see below CON 1 Channel 1 2 CON 2 Channel 3 4 When installing modules follow the instructions below carefully Incorrect installation can cause damage 1 Turn the power off and remove mains cable 2 Remove the top panel 3 Select the CX A4 connector you wish to install the module to see notes abov...

Страница 9: ...ut special tools and is available as a tested replacement complete with heat sink Proceed as follows to replace the power module Disconnect all the leads and connectors from the rear of the unit Ensure that the mains supply lead has been disconnected Remove the CX A4 from the equipment rack Remove the top panel The power amplifier modules are arranged as three dual channel units Locate the faulty ...

Страница 10: ...ower amplifier Power Input 230V 5 115V 5 available Fuse rating 230V T4A H 115V T8A H 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 equipment is used in controlled EMC environments the urban outdoors heavy industrial environments or close to railways tran...

Страница 11: ...e 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 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 and do not make any internal adjustments with the unit switched on Only reassemble the unit u...

Отзывы: