CX-A850 Amplifier Installation & User Guide V 4.0 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.
CX-A850: Installation and Operation Manual 1 CX-A850 Amplifier Installation and operation manual Contents Section 08-03-05 V4 Page 1 Safety Notes .............................................................................. 2 2 General Description ................................................................... 2 3 Installation.................................................................................. 2 4 Input Facilities ...............................................................
CX-A850: Installation and Operation Manual 2 1 Safety Notes • • • • • 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 45oC Do not touch any part or terminal carrying the hazardous live symbol ( ) while power is supplied to the unit.
CX-A850: Installation and Operation Manual 5 Input Routing Diagrams 8 independent mono amplifiers Fig 1 8 mono outputs fed from 1 mono input Fig 2 4 stereo amplifier pairs fed from 1 stereo input pair Fig 3 08-03-05 V4 3
CX-A850: Installation and Operation Manual 4 6 Output Details Eight 2-pole plug-in screw terminal type connectors (5mm pitch) are provided on the rear panel for the eight speaker outputs; these can accommodate flexible leads up to 2.50mm². Do not make any connections to the unit with the power cable attached. It is good practice to distance the output wiring from the input wiring and keep the speaker wires twisted until they are terminated to reduce any cross-talk to a minimum level.
CX-A850: Installation and Operation Manual 5 The output load should then be connected between the two positive (HOT) outputs of the relevant channels (no connection to common). You must ensure that the positive wire is connected to the "first channel" output and the negative wire is connected to the "second channel" output (see fig 5). 9 Status Indicators The front panel of the CX-A850 has an array of LED’s that indicate the status of all eight channels (see Fig 6).
CX-A850: Installation and Operation Manual 6 5. Adjacent to the connector there is an M3 fixing screw remove & retain this screw then fit a 35mm M3 hex spacer (supplied) in its place. 6. Push the 10-way VCA plug onto the PCB connector, aligned so the cable enters it from the rear of the chassis (See Fig 9) check there is contact with all 10 pins. 7. Position the VCA modules 3-pin socket through the rear panel cut-out and secure using M3 screws (both removed earlier) VCA Modules Installed to Channel 1&2 8.
CX-A850: Installation and Operation Manual 15 7 Equalisation Module Installation 1. Turn the power off and remove the mains lead. 2. Remove the top panel from the unit. Channel 7&8 PCB Connector Locations 3. Select the required PCB connector (see Fig 12 adjacent) that you wish to install the equalisation module to and remove the jumper from it. 4. 5. 6. 7.
CX-A850: Installation and Operation Manual 8 18 Technical Specifications Number of Channels Driven 1 2 3 4 5 6 Rated Output 4 Ohm load(s) 62W 58W 54W 50W 47W 44W Rated Output 8 Ohm load(s) 36W 34W 32W 30W 29W 28W 7 41W 27W 8 38W 26W Bridged Output Frequency Response THD+N VCA Module THD+N Crosstalk Typical, between adjacent channels 100W nominal into 8 Ohm load, minimum load 8 Ohms +0dB –0.5dB 10Hz to 20kHz, switchable high pass filter –3dB @65Hz 0.
CX-A850: Installation and Operation Manual 9 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.
