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Фрагмент инструкции
Pre-wire Install the C-Bus network, speakers and audio source cabling. If you are connecting two or more amplifiers, install Digital Audio cables as well. Install the physical units Install the amplifier, speakers and power supply. Then connect the required cables. Apply power Check all wiring and plug the power supply in to the wall power outlet. Table 3. Installation steps Multi Room Audio Amplifier Installation Instructions 2.2 Equipment Placement When installing the amplifier and its speakers, you should choose a location that is close to the audio input source and a wall power outlet for the amplifier. Doing so will minimise cabling issues. Proximity to the C-Bus input units that control the amplifier should be considered as well. You should consider the following factors when choosing a location for the amplifier and speakers. Be sure that: • there is a power outlet for each amplifier's power supply. • the amplifier is not in direct sunlight or near a source of heat. • cable runs are as short as possible. • cables and speaker wires do not present a tripping hazard. • outdoor speakers are securely fastened using stainless steel hardware. For multiple-amplifier installations you should make the decision whether to set up the amplifiers in a centralised layout or a distributed layout. A Centralised layout is appropriate when using multiple 560110R Low Power Amplifiers. This is especially true if the amplifiers are installed in a 19-inch equipment rack. In a centralised layout the networking and digital audio cable runs will be shorter and the speaker wire runs will be longer. Also, multiple power outlets are needed at one location. A Distributed layout allows you to install amplifiers in convenient locations in the home. For example, you might want to install a remote amplifier in a space above a ceiling and use concealed speakers in the ceiling. A distributed layout keeps the speaker wire runs shorter. Multi Room Audio Amplifier Installation Instructions 2.3 Wiring Diagrams Wiring diagrams are provided for typical installations using one amplifier (Figure 1) and more than one amplifier (Figure 2). Note that multiple amplifiers have one analogue input source and a digital audio connection between the amplifiers. When making wiring connections, it is important to follow these guidelines: • Do not plug a C-Bus network cable into a Digital Audio socket. You could damage the amplifier. • Consistent speaker wiring polarity is important for good sound quality. If you use multiple speakers with an amplifier, follow the speaker manufacturer's recommendations. • Speaker placement is important. You might have to move speakers to get the best results. • Keep cable runs as short as possible. • Use high quality cables of the proper type for the intended purpose. Refer to the information in the following subsections. The wiring diagram in Figure 1 shows the connections for one amplifier with a single pair of speakers. Figure 1. Single amplifier standalone installation diagram In multiple amplifier installations, the amplifiers share a single audio source. The volume and tone settings for each amplifier can be independently controlled. An RJ45 Tee connector, Catalogue Number 5600TEE, is needed to connect the Digital Audio signals between multiple 560110R Low Power Remote Amplifiers. Do not make any electrical connections between the speakers on any two amplifiers or connect any speaker wiring to earth (ground). Poor sound quality will result. Multi Room Audio Amplifier Installation Instructions Figure 2. Two amplifiers connected to a single audio source. Note for Figure 2. You can continue to connect Digital Audio cables to additional amplifiers. The analogue input, LOCAL IN, is connected to the first amplifier. Clipsal offers the following cable and connectors: Description 5005C305B (solid) 5005C305BST (stranded) C-Bus network cable, Cat.5e, 4 pair, UTP cable, colour: Pink RJ88P Modular plug, 8 way, Category 5e 2SPK2C105 2SPK2C259 Speaker cable, 105 strands, equiv to 1.5 mm. Speaker cable, 259 strands, equiv to 3.0 mm. Table 4. Cables and connectors Multi Room Audio Amplifier Installation Instructions 3 Wiring Details Use high quality cables and connectors for best results. Make sure that all connections are tight and that no strands of wire are protruding from the connectors. Bootlace crimps are recommended for twisted network cable connections. 3.1 Speaker Connections The high power MRA amplifiers use spring-type connectors. The Low Power Remote Amplifier uses a screw-type connector. Use low-impedance, stranded speaker cable to connect the loudspeakers to the output terminals on the amplifier. The impedance of the cables should not exceed 5% of the impedance of the speakers. As a general rule, the larger the diameter of the speaker cable's conductors, the lower the impedance. Cautions Avoid damage to the equipment by observing these cautions. • Do not allow the positive and negative speaker wires to short together. ...
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