CX163 - Manual
Contents
1. The CX163 can be configured to bypass the front panel level controls by setting internal jumpers J13 Zone 1 and or J12 Zone 2 to the DEF position 3 V2 100904 CX163 Stereo Zone Mixer Installation and Setup Guide CLOUD ELECTRONICS LIMITED Music Level Control continued The RL 1A is available for the American market The operation of the RL 1A is identical to the RL 1 but it has been designed to fit a single gang US electrical outlet box Front panel dimensions are 4 x 234 When seiting the jumper s please ensure that you e Remove the mains cable from the rear of the product before removing the top panel Only reassemble the unit using screws identical to the original parts NOTE The CX163 does not allow remote source selection so it is incompatible with the RSL 6 remote wallplates 5 3 Music Equalisation Equalisation for the music signals treble and bass is provided via the rear panel pre set controls in order to allow the installer to tailor the response of the music signals to suit the acoustics and speakers of each individual zone The equalisation controls are located to the right of the Line 6 input and above the zone outputs they are clearly marked HF High Frequency and LF Low Frequency A flat frequency response can be achieved by positioning the slots on the control shafts in the horizontal plane the HF control has a range of 10dB at 10kHz and the L2. COLD SCREEN COLD TWO CORE SCREENED CABLE SCREEN NOT CONNECTED AT THIS END SINGLE SCREEN CABLE TWO CORE SCREENED CABLE 11 V2 100904 CX163 Stereo Zone Mixer Installation and Setup Guide CLOUD ELECTRONICS LIMITED 12 3 Paging access switches not working correctly The CX163 leaves the factory configured to bypass the microphone access contacts for all three zone outputs so that when the product arrives all inputs are enabled in all zones Internal jumpers J1 to J3 bypass access contacts for Zones 1 2 and Utility respectively To enable the access contact for a particular zone remove the link on the corresponding jumper NOTE We advise that when you remove a jumper you leave it connected to one pin of the header so it remains with the apparatus for future use 12 4 Connecting RSL remotes to the CX163 The CX163 does not support remote source selection so is incompatible with the RSL remote series The only remote wallplate supported by the CX163 is the RL 1 remote level plate V2 100904 12 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
3. oe oe os o o em m ae ooo oe mmm emm emm mm emm ease ee es c e ees eae es e erm ease ee ee es e mmm em emm emm am a e e e es em oe oe X lt lt cn zm CX163 STEREO ZONE MIXER Cloud Electronics Limited CX163 Installation amp Setup Guide CLOUD ELECTRONICS LIMITED CX163 Installation and Setup Guide Cloud Electronics Limited 140 Staniforth Road Sheffield S9 3HF England Phone 44 0 114 244 7051 e Fax 44 0 114 242 5462 E mail technicalOcloud co uk WebSite www cloud co uk CX163 Stereo Zone Mixer Installation and Setup Guide CLOUD ELECTRONICS LIMITED Table of Contents Section Page 1 Safety lo 1 EE EE 1 2 General Di 1 3 Schematic Diasf m ee esrnigisi ir EE 2 A Tallado cas cece leads toas 2 5 tere Music IDU sarria 2 5 Sensitivity and Gain Control sque s HU 3 5 2 Music level control Local or Remote 3 5 3 Music Equalisation 23 25 59 0 ES dowd ERREUR Ed S 4 S4 Ting 6 D HO Ae dee ee d Seduce EE 4 6 Microphone Input 322a nior 4S cede nern 5 6 1 Paging Access Contacts as 5 62 Microphone Gain Control pases rr S 6 6 3 Microphone Level Control 6 64 Microphone Equalisation encia 6 6 5 High Pass Filter oq ceo e
4. If the moulded plug is cut off the lead for any reason the discarded plug is a potential hazard and should be disposed of in a responsible manner 2 General Description The Cloud CX163 is a stereo mixer zoner with two stereo zone outputs and a mono fixed level utility output It has applications where up to six line level music signals and one microphone are required to feed two separate zones both stereo and a utility zone such as toilet areas etc The CX163 provides microphone priorities fire alarm music mute paging microphone facilities and the possibility for Line 6 to take priority over other music signals in Zone 1 Front panel controls have been kept to a minimum Most behavioural controls can be found close to their respective inputs on the rear panel There are various optional accessories that extend the flexibility of the CX163 Optional remote plates which control music level on the two stereo zones A dedicated four zone paging mic with pre announcement chime Equalisation Modules for Bose Speakers 1 V2 100904 CX163 Stereo Zone Mixer Installation and Setup Guide CLOUD ELECTRONICS LIMITED 3 Schematic Diagram FROM RIGHT mono Hee STEREO ZONE l CHANNEL 9 stereo el DEF 1 OR 2 A J8 21 J13 Z1 gt I al S iMd gt 1 l REMOTE H ADDITIONAL JUMPERS RL 1 BYPASS MICROPHONE ACCESS CONTACTS FOR ZONES 1 2 AND UTIL RESPECTIVELY J14 Z1 ACC AVO mm NORMALLY
5. output is achieved by moving internal jumper J6 to the required position Music can be sourced from Line 1 Zone 1 or Zone 2 Both zone feeds are taken before any level controls and the Zone 1 feed is taken after the line 6 priority circuitry This means that if Zone 1 line 6 priority is selected and the utility source is from Zone 1 line 6 priority will also be effective in the utility zone Removing the link from jumper J6 will turn the utility output into a fixed level mic only output J6 SETTINGS In certain installations such as licensed premises or retail outlets within a shopping mall there may be a local authority or fire service requirement to mute the music signals via a fire alarm control panel in an J4 SETTINGS alarm condition The CX163 provides a facility to mute the music signals only by using a fully isolated pair of contacts This is usually a relay mounted close to the CX163 which is powered by the fire alarm control panel The relay can either be closed or opened in an alarm condition but the internal jumper J4 must be set to the corresponding position e N C Normally closed means that alarm condition is when the relay opens e N O Normally open means that alarm condition is when the relay closes Upon leaving the factory the unit is configured for a normally open relay connection When setting the jumper s please ensure that you Remove the mains cable from the rear of the product before re
6. you leave it connected to one pin of the header so it remains with the apparatus for future use Upon leaving the factory the unit is configured to bypass the microphone access contacts In order to activate the access contact for a particular zone the appropriate link will need to be removed When seiting the jumper s please ensure that you e Remove the mains cable from the rear of the product before removing the top panel Only reassemble the unit using screws identical to the original parts 6 2 Microphone Gain Control A pre set gain control is provided adjacent to the microphone input The gain can be adjusted from 10dB to 50dB A high overload margin is maintained at all gain settings 6 3 Microphone Level Controls Front panel microphone level controls are provided for each stereo zone Microphone level to the utility zone of the CX163 is varied by using the pre set level control located above the utility zone output on the rear panel Rotating any microphone level control fully anti clockwise effectively turns the microphone off in that zone In addition the microphone can be muted on a zone basis via the paging access contacts 6 4 Microphone Equalisation Two band equalisation is provided for the microphone input The pre set controls to adjust the equalisation are located directly above the microphone input socket The characteristics of the equalisation are optimised for the tonal correction of speech signals The HF cont
7. B 10kHz Microphone Inputs 100Hz 3dB filter 20kHz lt 0 5dB Distortion lt 0 05 between 20Hz 22kHz Typical Common Mode Rejection 1kHz gt 70dB ut Impedance Equalisation LF 10dB 100Hz HF 10dB 5kHz Outputs Output OdBu 775mV via 3 5mm phoenix type plug in screw terminals Minimum load impedance 1k20 Maximum output level 20dBu 11 General Specifications Power Input 230V 115V 10 Fuse Rating T100mA 230V T200mA 115V Fuse Type 20mm x 5mm 250V Dimensions 482 60mm x 44 00mm 1U x 152 5mm V2 100904 10 CX163 Stereo Zone Mixer Installation and Setup Guide CLOUD ELECTRONICS LIMITED 12 Troubleshooting 12 1 Ground Earth Loops Despite your best efforts if the completed sound system hums you probably have a ground loop the offending signal source can be found by setting the volume control to minimum then disconnecting the input leads both left amp right channels on each line input until the hum disappears This problem is often caused by terminating a screened input cable into a signal source positioned a significant distance from the CX163 A good way of avoiding this potential problem is to use signal sources CD players and the like that are double insulated with no connection to the mains supply earth If a signal feed is derived from a second device a club or microphone mixer for example it would be perfectly normal to expect this to be earthed we suggest that a transfor
8. F control has a range of 10dB at 50Hz 5 4 Line 6 Priority In Zone 1 the line 6 music input i OFF ON can be given priority over other music signals This is intended for use with sources such as jukeboxes or spot announcement Os SENINGS players Priority is only enforced when a signal is detected at line 6 at which point the selected music source will mute making way for the line 6 signal Once the signal on line 6 ceases the J10 SETTINGS selected music source in Zone 1 will smoothly restore to its former level The time taken for this restoration can be 3 6 or 12 seconds depending on the setting of internal jumper J10 the factory default restoration time is 3 seconds In order to switch priority on or off the internal jumpers J9a b can be set Both jumpers will need to be set in the same position failing to do so will result in only one of the stereo audio channels being prioritised 3s 6s 12s CX163 Stereo Zone Mixer Installation and Setup Guide CLOUD ELECTRONICS LIMITED Line 6 Priority continued When setting the jumper s please ensure that you e Remove the mains cable from the rear of the product before removing the top panel Only reassemble the unit using screws identical to the original parts NOTE This feature is only available in Zone 1 If the utility zone audio is linked to Zone 1 audio the line 6 priority setting will effect the utility output audio as well as Zone 1 6 Microphone
9. Input One microphone input is provided with electronically balanced transformer less circuitry configured for optimum low noise performance The input impedance is greater than 2kQ and suitable for microphones in the 2000 to 600 range Input is via the 3 pin plug in screw terminal type connector Phoenix type located on the rear panel A facility to provide 15V phantom power is included that is activated by setting the internal jumper J5 to the ON position J5 SETTINGS When seiting the jumper please ensure that you Remove the mains cable from the rear of the product before removing the top panel Only reassemble the unit using screws identical to the original parts 6 1 Paging Access Contacts Paging contacts for each individual microphone input are provided on the rear panel These contacts control which zones the microphone will be active in This provides the facility for paging microphones such as the Cloud CPM 4 to be BYP connected to the CX163 The access contacts work on a D short to ground system which is compatible with the majority J1 3 SETTINGS of paging microphones These contacts can be bypassed via the configuration of the internal jumpers detailed below J1 2 Zones 1 2 respectively J3 Utility zone 5 V2 100904 CX163 Stereo Zone Mixer Installation and Setup Guide CLOUD ELECTRONICS LIMITED Paging Access Contacts continued Note We advise that when you remove a jumper
10. OPEN NORMALLY CLOSED CONTACT SELECTION FOR MUSIC MUTE PRIORITY SHARED JUMPERS JUMPERS DUPLICATED FROM ZONE 1 TO ZONE 2 ARE MARKED FOR ZONE 1 THE ZONE 2 JUMPERS ARE GAIN MIC 1 INPUT STEREO MONO MUSIC AVO ACC MIC PRIORITY DEFEAT FRONT PANEL LEVEL CONTROL UNE or gt ZONE e GATE Ir MODULE pe VE gt UTILITY MUSIC SOURCE SELECT UTIL 4 Installation The Cloud CX163 occupies one unit of standard 19 equipment rack The microphone input and all zone outputs are balanced The CX163 is 150mm deep but a depth of 250mm should be allowed to clear connectors and cables Ventilation holes on the base of the unit should not be obscured 5 Stereo Music Inputs The line inputs are suitable for most music STEREO MONO sources such as compact disc players tape players and receivers etc All inputs are unbalanced and use RCA type phono sockets Input impedance is 48kQ Each zone on the CX163 can operate in either mono or stereo mode the default setting for each zone is stereo The mode of each zone is determined by the position of their internal jumpers J8 Zone 1 J7 Zone 2 J7 AND J8 SETTINGS Self adhesive labels supplied can be affixed to the front panel to identify the available input sources V2 100904 2 CX163 Stereo Zone Mixer Installation and Setup Guide CLOUD ELECTRONICS LIMITED 5 1 Sensitivity and Gain Control All six line inputs have pre set gain controls which are acces
11. mer be used to isolate the signal and prevent a noisy loop see diagrams below 12 2 Connecting balanced signals to unbalanced line inputs We recommend the use of a transformer to convert a balanced signal to an unbalanced signal suitable for direct connection to the CX163 line inputs The transformer should be mounted close to the CX163 and the unbalanced output lead should be kept as short as possible Where both the source and destination units are earthed it is important to isolate the primary and secondary windings to avoid a potential ground loop if there is any doubt about this we suggest that the balanced cable screen is not connected at the transformer end RS Components part 210 6447 is a suitable transformer for this application and we recommend that the screening can part number 210 6469 also be fitted to the transformer Canford Audio supplies a similar transformer part number OEP 21604 All transformers should be wired to give a ratio of 1 1 CONVERTING TWO PIECES CONVERTING UNBALANCED CONNECTING TWO PIECES OF OF UNBALANCED EQUIPMENT TO BALANCED USING A BALANCED EQUIPMENT USING A USING A 1 1 RATIO TRANSFORMER 1 1 RATIO TRANSFORMER 1 1 RATIO TRANSFORMER TWO CORE SCREENED CABLE SINGLE SCREEN AUDIO TRANSFORMER SINGLE SCREEN GE RS PART NUMBER 210 6447 CABLE FITTED WITH SCREENING CAN RS PART NUMBER 210 6469 SCREEN NOT CONNECTED AT THIS END SCREEN SCREEN SCREEN
12. moving the top panel Only reassemble the unit using screws identical to the original parts V2 100904 8 CX163 Stereo Zone Mixer Installation and Setup Guide CLOUD ELECTRONICS LIMITED 9 Bose Active Equalisation Modules Each output channel has the facility to connect a plug in Bose equaliser module See the table below for details of the connector for each output Installation 1 2 3 4 5 Switch off the mains supply and remove the CX163 s power lead Remove the unit s top panel Fit the Bose EQ module to the connector The EQ card should be perpendicular to the main board Apply moderate pressure to the Bose EQ module until it locates with a click Replace the top panel Current Consumption The CX163 can provide 90mA of power to internal equalisation modules If this limit is exceeded the unit will eventually overheat and then shutdown Below is a table detailing the types of available equalisation module and their relative current consumption MODEL OF EQUALISATION MODULE CURRENT REQUIRED M8 M32 MA12 402 502A 802 MB4 MB24 502B 502BEX LT3302 LT4402 LT9402 LT9702 Current Consumption of Active Equalisation Modules by Model 9 V2 100904 CX163 Stereo Zone Mixer Installation and Setup Guide CLOUD ELECTRONICS LIMITED 10 Technical Specifications Line Inputs 100mV 17 8dBu to 1 5V 6dBu Nose ponz2z 0dB gain lt 84dBu rms typical Equaisaion e 10dB 50Hz HF 10d
13. not block or restrict any air vent Do not operate the unit in ambient temperatures above 35 C Do not place liquid filled containers on or close to the unit CAUTION Hazardous Live Do not touch any part or terminal carrying the hazardous live symbol Y 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 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 panel and do not make any internal adjustments with the unit switched on Only reassemble the unit using screws identical to the original parts In the interest of continuing improvements Cloud Electronics Limited reserves the right to alter specifications without prior notice Cloud Electronics Limited 140 Staniforth Road Sheffield S9 3HF England Telephone 44 0 114 244 7051 Fax 44 0 114 242 5462 E mail info cloud co uk 13 V2 100904
14. per altogether NOTE When removing a jumper link we advise that the link be left connected to one pin of the jumper header to prevent accidental loss J15 jumper positions are reversed from J11 and J14 7 Output Details Each output terminal is balanced using a 3 pole Phoenix type connector The outputs can operate into loads as low as 1k2Q The nominal output level is OdBu 775mV but the mixer can operate with a wide range of signals up to a maximum output level of 20dBu 7 75V For balanced interconnections 2 core screened cable should be used Connect the screen to pin 1 the reverse phase signal normally blue or black to pin 2 and the in phase signal normally red to pin 3 If you wish to connect any zone output to an unbalanced input connect the cable screen to pin 1 with the hot connection inner core to pin 3 and make no connection to pin 2 Note that unbalanced signals should not be run over long distances It is recommended that you only use unbalanced connections between pieces of equipment that are in the same rack 7 V2 100904 CX163 Stereo Zone Mixer Installation and Setup Guide CLOUD ELECTRONICS LIMITED 7 1 Utility Output The CX163 is fitted with a fixed level balanced output for utility areas such as toilets and foyers where it is desirable to have a fixed level signal which operates independently from the variable outputs of Zones 1 amp 2 LINE 1 ZONE 1 ZONE 2 Source selection for the utility
15. rol provides 10dB at 5kHz whilst the LF control provides 10dB at 100Hz To effectively bypass the microphone equalisation section both pre set controls should be set to OdBu mid position vertical 6 5 High Pass Filter The microphone signal passes through a 100Hz high pass filter This is to reduce breath blasts and handling noise on the microphone audio V2 100904 6 CX163 Stereo Zone Mixer Installation and Setup Guide CLOUD ELECTRONICS LIMITED 6 6 Microphone over Music priority The CX163 provides a facility whereby the microphone signal can be given priority over music signals in any particular zone When a signal is detected on the mic input all music signals are attenuated by 30dB Once the microphone channel is clear the music will restore to the previous settings Microphone priority can be triggered by the appropriate zone access contacts or it can be triggered when a signal is detected on the microphone input The triggering mechanism can be selected on the respective jumpers for each of the zones J11 Z2 J14 Z1 J15 UTIL Leaving the jumper disconnected disables microphone priority in that zone Jumper positions AVO Priority is triggered when a signal is detected on the microphone input and the zone is being accessed ACC Priority is triggered as soon as the access contact for that zone is shorted to ground OFF This position is not marked but can be achieved by removing the jum
16. sible on the rear panel adjacent to their respective input sockets The input sensitivity can be varied from 18dBu 100mV to 6dBu 1 5V The pre set gain controls should be set so that all the input signals operate at the same level OdBu within the CX163 to give the music level controls an optimum control range 5 2 Music level control Local or Remote The music level in a zone can be controlled from either the front panel or a remote control plate located up to 100m from the CX163 The CX163 is compatible with the RL 1 remote level control plate RL 1 4 POLE RL 1 remote control plates can be mounted onto a CONNECTOR standard British flush or surface mounted 25mm deep back box Each RL 1 needs to be connected using two core screened cable Connection details are shown in the adjacent diagram Remote controls will be operational once correctly connected to the unit there are no further operations required REMOTE CONTROL OF MUSIC LEVEL STEREO MODE When a zone is in the mono mode it is possible to connect two RL 1 plates to that zone and use them to independently control the levels of the left and right outputs of the zone In order to do this the RL 1 plates should be connected as shown adjacently REMOTE CONTROL OF MUSIC LEVEL l MONO MODE 4 POLE CONNECTOR
17. ta EA B Rog mee enc Ea cec dc dc d 6 6 6 Microphone over Music ppo 7 PEE S Details ss rre ne aio aa one 7 AA 8 8 Remote Music Mute Fire Alarm interface 8 9 Bose Active Equalisation Modules 152 sews vend sauer ened ous Fi 9 10 Technical Specifications s us sun xx eu ERR eR a ia as 10 11 General Specifications wesen ar Ae 10 12 Troubleshooting ida ec ae d AD a dea bonae a adea 11 12 1 Ground Earth Loops ae a 11 CX163 Stereo Zone Mixer Installation and Setup Guide CLOUD ELECTRONICS LIMITED Table of Contents continued Section Page 12 2 Connecting balanced signals to unbalanced line inputs 11 12 3 Paging access switches not working correctly 12 124 Connecting RSL remotes to the CX163 ae 12 CX163 Stereo Zone Mixer Installation and Setup Guide CLOUD ELECTRONICS LIMITED 1 Safety Notes For more detailed information refer to the rear of the manual 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 Y 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 any servicing to qualified service personnel
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