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Refer to Figure 6. 2. Install the supplied ferrite filter on the power supply cable between the power supply and the MRA amplifier. The filter halves latch when closed over the cable. 3. After you have connected the C-Bus cable, loudspeakers and audio input, connect the power supply to a suitable wall power outlet. Refer to the appropriate sections in this document. Figure 6. MRA Amplifier External Power connections Note on Figure 6 The IR Target connectors on the amplifiers' rear panels are used to route IR control signals back to A/V equipment using the digital audio cables and IR emitters connected to the Matrix Switcher. Refer to the C-Bus Matrix Switcher and System Installation Instructions for more details. The programming (PGM) connector is used at the factory to load firmware. The PGM connector is not used during installation or subsequent operation. Multi Room Audio Amplifier Installation Instructions 5 Commissioning and Testing Follow these guidelines when testing the functionality of the installation. • Configure the C-Bus wall switches to control the volume, bass/treble and muting before connecting an audio source. Refer to the wall switch instruction documents and to C-Bus Toolkit software Help. • Be sure to power off amplifiers before connecting audio sources or network cables. Mute the speakers before connecting or disconnecting. • Use an MP3 player or other equipment as an audio source. • Do not Megger test the C-Bus network cable. • Refer to the C-Bus Multi RoomAudio Amplifier User's Guide for use of controls and C-Bus wall switches. Also refer to the wall switch documents. • Refer to the C-Bus Multi Room Audio Amplifiers User's Guidefor information about headphones and hand held remote control use. 6 Troubleshooting Possible Explanation There is no sound after switching the Amplifier on (sound worked previously). The volume may have been set to minimum, or the Amplifier may have been Muted (on a Desktop Amplifier) before the Amplifier was switched off. The default volume, bass or treble settings have changed (when switching the Amplifier on). If a power failure occurs when the Amplifier is on, the volume, bass and treble settings are saved and become the new defaults. An Amplifier switches off, particularly when the volume is loud. If insufficient current is available for the Amplifier, it will switch itself off. This may occur if the Amplifier receives its power from a Matrix Switcher. Cannot hear any sound when using the optical input Some digital audio formats (such as surround sound) are incompatible with the MRA system. Multi Room Audio Amplifier Installation Instructions Specifications 560125D/2 Desktop and 560125R/2 Remote Description Supply Voltage 24 V DC @ 3.75 A when using the external switch mode power supply 27 V d.c. when powered by the Matrix Switcher (via digital audio connection), refer to the system level documents C-Bus supply voltage 15 to 36 V d.c. C-Bus sink current 22 mA Power consumption 90 W maximum Maximum power output 28 W RMS into 4 . (0.514% THD) Frequency response 40 Hz to 20 kHz (±1 dB) Total harmonic distortion (1 kHz, 20 W RMS into 4 .) 0.36% (using analogue input) Signal to noise ratio > 67 db (peak, unweighted) C-Bus network clock and burden Software selectable Analogue input signal level (Local inputs) 2.8 V p-p maximum (47 k .) D/A conversion 16 bit PCM Operating temperature Desktop Amp.: 10 to 40 °C (50 to 104 °F) Remote Amp.: 10 to 70 °C (50 to 158 °F) Operating humidity 10 to 90% RH (non-condensing) Dimensions (H x W x D) 74 mm x 180 mm x 215 mm, Desktop 71 mm x 175 mm x 212 mm, Remote Multi Room Audio Amplifier Installation Instructions 560110R Low Power Remote Description Supply Voltage 27 V d.c. when powered by the Matrix Switcher (via digital audio connection), and/or 24 V DC @ 1.25A when using the external power supply or switch mode power supply C-Bus supply voltage 15 to 36 V d.c. C-Bus sink current 22 mA Power consumption 30 W maximum Maximum power output 10 W RMS into 4 . (0.514% THD) Frequency response 40 Hz to 20 kHz (±1 dB) Total harmonic distortion (1 kHz, 20 W RMS into 4 .) 0.36% (using analogue input) Signal to noise ratio > 67 db (peak, unweighted) C-Bus network clock and burden Software selectable Analogue input signal level (Local inputs) 2.8 V p-p maximum (47 k .) D/A conversion 16 bit PCM Operating temperature 10 to 70 °C (50 to 158 °F) Operating humidity 10 to 90% RH (non-condensing) Dimensions (H x W x D) 40 mm x 120 mm x 158 mm Multi Room Audio Amplifier Installation Instructions Standards Complied DECLARATIONS OF CONFORMITY Australian/New Zealand EMC & Electrical Safety Frameworks and Standards Regulation Standard Title Electrical Safety * AS/NZS 60065 Audio, video and similar electronic apparatus - Safety requirements EMC AS/NZS CISPR 13 Sound and television broadcast receivers and associated equipment Radio disturbance characteristics (emissions) When powered by EP1096 or PAC090M Power Supply, Clipsal Catalogue Number 5600P2...

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