36/50 2 Zone Integrated Mixer Amplifier Installation & Operation Manual V5.0 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.
36/50: Installation and Operation Manual 1 36/50 Integrated Two Zone Mixer Amplifier Installation and Operation manual Contents Section 06/12/02 V5.0 Page 1 Safety Notes...............................................................................2 2 General Description ...................................................................2 3 Schematic Diagram ....................................................................2 4 Installation ......................................................
2 1 36/50: Installation and Operation Manual 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 35oC. • Do not touch any part or terminal carrying the hazardous live symbol ( ) while power is supplied to the unit.
36/50: Installation and Operation Manual 4 3 Installation The Cloud 36/50 is suitable for mounting in a standard 19" equipment rack and occupies two units of rack space. Sufficient ventilation should be provided particularly where the unit is required to deliver a high output power for a long period of time. The cooling is provided by convection and the airflow through the ventilation slots must not be obstructed.
4 36/50: Installation and Operation Manual The RSL-6A and RL-1A are available for the American market. They have identical operation to the RSL-6 and RL-1 but have been designed to fit a single gang US electrical outlet box. Front panel dimensions are 4 1/2”×2 3/4” 8 Music Equalisation Separate treble and bass controls are provided for music signals on each zone.
36/50: Installation and Operation Manual 10 5 Microphone Input Location of Jumper J1 A microphone input is provided, the microphone pre-amplifier is an electronically balanced, transformerless design configured for optimum low noise performance. The input impedance is greater than 2kΩ and is suitable for microphones in the 200Ω to 600Ω range. The input is via a gold plated 3-pin XLR type connector with latch and this is positioned on the rear panel.
6 36/50: Installation and Operation Manual Multiple CPM paging microphones can be connected to a 36/50 when wired as the following diagram shows, each microphone will require an external power supply (CPM-PSU): - 12 Microphone Gain Control A pre-set gain control is provided adjacent to the XLR input connector. The gain can be adjusted from 0dB to 60dB and this wide range of gain allows direct connection of high output devices such as radio microphones without the need for additional attenuation.
36/50: Installation and Operation Manual 7 position, in this case the music source, microphone and music levels track the Zone 1 settings. When setting the jumper(s) please ensure that you: • Remove the mains cable from the rear of the product before removing the top panel. • Only reassemble the unit using bolts/screws identical to the original parts.
8 36/50: Installation and Operation Manual 1. 2. 3. 4. 5. 6. 7. 8. 9. 20 To fit an EQ card: Switch off at the mains supply and remove the power lead from the unit. Remove the top panel from the unit. Remove the jumper from the relevant PCB connector (see above for connector info). Configure the relevant 65Hz jumper to the ‘ON’ position (see section 18 for details). Take out the M3 screw next to the connector, this screw goes through the main PCB and has a white arrow pointing to it. Retain the screw.
36/50: Installation and Operation Manual 9 When setting the jumper(s) please ensure that you: • Remove the mains cable from the rear of the product before removing the top panel. • Only reassemble the unit using bolts/screws identical to the original parts. 22 Controlling two zones with one RSL-6 A single RSL-6 can be used to control more than one zone; however, the five resistors fitted to the RSL-6 will have to be replaced with different values.
10 36/50: Installation and Operation Manual Level Control A maximum gain reduction of 60dB can be achieved with a control voltage of +10V; the rate of attenuation is approximately 165mV per dB. A control voltage of zero realises unity gain (full volume), however, with no external connection to pin 2, an internal 4k7 resistor connected to the +15V power will ‘pull up’ the control voltage to provide maximum attenuation.
36/50: Installation and Operation Manual 11 (primary & secondary series connected) and we recommend the fitting of the screening can (part number 210-6469); Canford Audio supply a similar transformer OEP Z1604 but we suggest that these should be fitted in a screened housing. All transformers should be wired to give a ratio of 1:1.
12 28 36/50: Installation and Operation Manual Technical Specifications Line inputs 20Hz-20kHz ±0.5dB <0.05% 20Hz -20kHz 195mV (-12dBu) to 2.0V (+8dBu) 20dB range 47kΩ >20dB -90dB A weighted (0dB gain) HF: ±10dB/10kHz LF: ±10dB/50Hz Frequency Response Distortion Sensitivity Input Gain Control Input Impedance Headroom Noise Equalisation Microphone Inputs 100Hz / -3dB(filter) 20kHz ±0.5dB <0.
36/50: Installation and Operation Manual 13 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. CAUTION – 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.
