CX133 Zone 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.
1 CX133: INSTALLATION AND OPERATION MANUAL CX133 ZONE MIXER Installation and operation manual Contents Section Page 1 Safety Notes...............................................................................2 2 General Description ...................................................................2 3 Schematic Diagram ....................................................................2 4 Music Inputs ...............................................................................2 4.
2 1 CX133: 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 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.
3 CX133: INSTALLATION AND OPERATION MANUAL 4.2 Music Source Select Each zone has an independent source select control. The three position switch is used to select the desired music signal. Use the supplied label pack to identify the signal sources on the front panel. Line 3 input can be configured to have priority over any other selected signal, see section 6 for full details.
4 CX133: INSTALLATION AND OPERATION MANUAL Figure 3 5 Mono Operation MONO / STEREO OPERATION Internal jumpers allow either zone to operate in mono (see Figure 4). In the mono mode of operation, both the left and right output sockets carry the same mono signal and either or both sockets can be used.
5 CX133: INSTALLATION AND OPERATION MANUAL 7 Microphone Input 7.01 Microphone Input A microphone input is provided and the microphone 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 200 to 600 ohm range. Input is via a gold plated 3-pin XLR type connector with latch, which is positioned on the rear panel.
6 12 CX133: INSTALLATION AND OPERATION MANUAL Zone Outputs The two stereo output zones have balanced output stages using 3 pin XLR type connectors and can operate into loads as low as 600Ω. The nominal output level is 0dBu (775mV) but the CX133 can operate with a wide range of signal levels up to a maximum output of +20dBu (7.75V). A 3-pin XLR type female connector is required for each output.
7 CX133: INSTALLATION AND OPERATION MANUAL 14 Music Mute (Fire Alarm Interface) 15 15.1 REMOTE MUSIC MUTE TERMINATIONS CX133 2 POLE CONNECTOR RELAY 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 alarm condition.
8 15.4 CX133: INSTALLATION AND OPERATION MANUAL Unbalanced Mode If the zone outputs are required to operate in the unbalanced mode, the unused pin of the XLR type connector should be left with no connection. 16 Technical Specifications Stereo Line Input Frequency response Distortion Sensitivity Input impedance Input gain Headroom Noise Equalisation 20Hz-20kHz ±0.5dB <0.03% 20Hz-20kHz -12dBu(200mV) to +8dBu(2.
CX133: INSTALLATION AND OPERATION MANUAL 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.
