source:Industry News release time:2022-08-15 Hits: Popular:Brand bar audio wholesale
In the construction of sound reinforcement system, there are often system failures caused by inappropriate wires, unreasonable installation methods, irregular interface welding, and non-standard use of joints. At the same time, irregular construction will also cause maintenance and repairs. inconvenient. In order to further understand the specific precautions, the following points are summarized: On-site construction wire, accessory connectors, construction technology and equipment installation issues.
1. Wire:
Microphone cable: 2-core or 4-core shielded wire, mostly used in surface-mounted occasions, the wire is thicker, with anti-stretch filling material inside, good softness, beautiful appearance, and a variety of colors. Suitable for wired microphones for surface mounting.
Engineering audio signal cable: 2-core or 4-core shielded wire is used, and there is less filling material inside the wire, so the outer diameter of the wire is relatively small, which is convenient for threading in the wire tube. When connecting equipment in the cabinet, it is also easy to organize and tie the wires. The wiring in the cabinet is very clear, and it is also conducive to later maintenance and repair.
Engineering speaker wire: oxygen-free copper speaker wires with different wire diameters can be selected according to the power of the speakers and power amplifiers, usually with a wire diameter of 2.0-4.0mm square. In order to facilitate construction and meet the construction requirements, special speaker cables should be used for engineering.
2. Accessories and connectors
It mainly includes connectors, wall interface boxes and customized accessories.
Interface box: The interface boxes of different projects need to be configured according to the specific requirements of the project. The interface box can be ground mounted and wall mounted. In order to cooperate with the decoration, the interface box is mostly hidden installation. The general-purpose type can be used, that is, the manufacturer pre-produces it, and the project construction personnel install it in the designated position according to the design requirements, and weld the pre-laid signal line and the connector of the interface box.
For projects with special needs, you need to customize the interface panel or interface box, the interface is configured according to the actual needs, and the panel needs to be designed and produced according to the needs in advance, which is more in line with the actual use needs. The installation of the customized interface box can be completely determined according to the installation position, size and installation method, which is more in line with the actual needs of the project, but also pay special attention to the standardization of customized equipment, and the interface must conform to the industry standard of each type of interface of the system.
Connectors: There are two main types of audio signals: balanced and unbalanced. Balanced connectors are mainly XLR and three-core 6.35mm straight connectors. The connector used for microphone connection is usually XLR interface, and the signal transmission part can use three-core 6.35mm straight plug connector and XLR connector. The male head of the XLR connector must be the output interface, and the female head must be the input interface. The connectors used for unbalanced audio signal connection mainly include lotus connectors and two-core 6.35mm straight plug connectors. The connection plugs between the power amplifier and the speakers mainly include banana plugs, two-core 6.35mm straight plug connectors, four-core or multi-core speaker special connectors and screw terminals. The power output end of the power amplifier usually has special binding posts, and the specifications of the binding posts are international standards, so you can directly use the "banana head" dedicated to the speaker, which is very flexible for adjusting the output phase of the speaker and changing the wiring.
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