Z4II & Z8II Venue Mixer 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.
Z4II & Z8II: Installation and User Guide 1 Z8II & Z4II Venue Mixer Installation and operation manual Contents Section 22/10/04 V9 Page 1 Safety Notes...............................................................................3 2 General ......................................................................................3 3 Schematic Diagram ....................................................................3 4 Installation ...................................................................
Z4II & Z8II: Installation and User Guide 2 Contents (cont.) Section 22/10/04 V9 Page 25.4 LM-1 Mic/line plus remote control of music signals ................. 14 26 Solving problems ..................................................................... 15 26.1 Ground loops (aka Earth loops)............................................... 15 26.2 Connecting balanced signals to the unbalanced line inputs .... 15 27 EMC Considerations................................................................
Z4II & Z8II: Installation and User Guide 1 3 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 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.
Z4II & Z8II: Installation and User Guide 4 6 Music Inputs - Sensitivity & Gain Control All six line inputs have a pre-set gain control on the rear panel, adjacent to the respective input sockets. The input sensitivity can be varied from –12dBu (195mV) to +8dBu (2.0V). The pre-set gain controls should be set so that all the input signals operate at the same level within the mixer so that the change in level when switching sources is minimal.
Z4II & Z8II: Installation and User Guide 5 Location of Jumper J1 For balanced microphones, connect the MIC INPUT cable screen to pin 1, the in-phase signal VR3 VR2 SOCKET (+) to pin 2 and the reverse phase signal VR1 (-) to pin 3. For unbalanced microphones, HF LF SK1 GAIN "! connect a wire link from pin 1 (ground) to MICROPHONE PHANTOM pin 3 inside the XLR cable mounted plug; POWER #$$ use pin 1 as ground (cable screen) and pin % & %' ( & : 2 as hot.
Z4II & Z8II: Installation and User Guide 6 Wiring Multiple CPM Paging Microphones to a Z4 or Z8 Venue Mixer In certain circumstances the Z4 and Z8 can power more than one CPM microphone, refer to section 19 for more details. The Z4 and Z8 mixers are compatible with general purpose paging microphones that are fitted with close-contact switches or open-collector switching devices.
Z4II & Z8II: Installation and User Guide 16 7 Microphone Priority Fully automatic, voice operated priority is provided. When any microphone is used, the music signals will attenuate by approximately 30dB; after the announcement, the music signals will restore smoothly to their former level. Priority over Mic 1 & Mic 2 is provided for the paging mic only; when a paging announcement is made, this has full priority over any signal present on both the Mic 1 and Mic 2 channels.
Z4II & Z8II: Installation and User Guide 8 If the mixer has a CPM paging microphone installed, you have the option to power the microphone with the ‘CPM-PSU’ external power supply. This will reduce the load on the system by 40mA. If a power supply failure occurs switch off the mixer and disconnect the remote modules, the mixer should be left off for approximately 30 seconds to allow it to reset.
Z4II & Z8II: Installation and User Guide 23 9 Controlling the music functions using external DC control The Cloud Z4 and Z8 can be used as part of an automated sound system by controlling the music level and music source by an external 0-10V DC voltage. The 3-pole connector normally used to terminate the RSL-6 control plate can be used to feed two separate control voltages into the mixer on a zone by zone basis.
Z4II & Z8II: Installation and User Guide 10 24 Plug-in Active Equalisation modules. Each zone board has the facility to connect a plug-in equalisation module. When fitting a module to one of the zone boards, proceed as follows: • Disconnect the power connector from the mixer. • Remove the top panel. • Locate the zone board for the zone to which the EQ card is to be fitted. The zone boards run vertically up the inside of the unit. • Locate CON 2, the EQ card connector on the zone board.
Z4II & Z8II: Installation and User Guide 25.1 11 AE-1 Aerobics Module The Cloud AE-1 is a remotely located active module with facilities for a line level music input and an unbalanced microphone input.
Z4II & Z8II: Installation and User Guide 12 25.2 DM-1 Dual Microphone Input Module The Cloud DM-1 is a remotely located active module with two balanced microphone inputs via 3 pin female XLR connectors. Each input has a level control and overall equalisation is provided by tamperproof treble and bass controls. A ‘music ducking’ switch provides priority over the main system music if required. Modules can be linked when wired in a ‘daisy chain’ format (see section 24.3).
Z4II & Z8II: Installation and User Guide 25.3 22/10/04 V9 Wiring 2 or more DM-1’s in a daisy chain format.
Z4II & Z8II: Installation and User Guide 14 25.4 LM-1 Mic/line plus remote control of music signals. The Cloud LM-1 is a remotely located active module with a balanced microphone input, a line level music input and music source select & level controls (rather like a built in RSL-6). A microphone priority switch provides the option to reduce the level of the music signal when the mic is used. Use 9 core screened cable to wire the LM-1 to a facility input on any zone of the Z4 or Z8.
Z4II & Z8II: Installation and User Guide 26 Solving problems 26.1 Ground loops (aka Earth loops) 15 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 & right channels) on each line input until the ‘hum’ disappears.
Z4II & Z8II: Installation and User Guide 16 27 EMC Considerations The Cloud Z4 & Z8 fully conform to the relevant electromagnetic compatibility (EMC) standards and are technically well behaved; you should experience no operational problems and under normal circumstances, no special precautions need to be taken.
Z4II & Z8II: Installation and User Guide 17 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.
