Audio equipment connection need to pay attention to the problem

1, pay attention to power: audio equipment to have a dedicated power supply, and the power of the light to separate the Shanghai sound equipment rental, and the light likes a little lower voltage, but the sound is to standard voltage. With a dedicated power supply, but also a stable and reliable power supply socket, you can try to use “ Power Sequencer ” although the cost increase but improve the stability and ease of use. In short: the correct and reliable connection of all sound equipment power supply is essential. One thing to note: some imported equipment power supply will have the choice of 110V and 220V switch, in our country, be sure to choose the location of the 220V can be connected to power.

2, pay attention to the grounding of the equipment: the right to all the sound equipment to connect the ground wire is very important, good grounding can reduce the interference of the signal transmission equipment, improve equipment stability. Note that the ground wire should be in accordance with the lightning line grounding standards, is buried in the underground part of the conductor to rust and contact, to better buried deep, do not share the power line configuration and three-phase grounding line, that will not reduce the noise in the sound system, but also easy to damage the equipment.

3, pay attention to choose the appropriate connection signal line: a sound equipment, we can connect with XLR to connect the XLR balanced lines do not use the TRS equilibrium line; can connect with the TRS line of balance do not use TS mono unbalanced line is connected; there is no way that TS can be used as single channel non equilibrium line connecting device.

4, pay attention to reverse and short-circuit signal: signal line short circuit can often cause silent failure, check up is very troublesome, unless a signal line is removed using a multimeter to detect it, so be careful when welding line.

5, pay attention to the length of the signal line: in connection with the equipment, we should try to use a shorter signal line, one to save costs, and secondly to reduce line resistance and interference. Under normal circumstances, the use of balanced transmission lines can be up to about 300 meters long, while the unbalanced line can not be long-distance transmission.

6, pay attention to the level of the device: if the device has a +4 and -10 or -20 level switch on the rear panel, under normal circumstances, we have to put in the +4 position, this is the standard level.

Note: 7, through many devices have a direct (Bypass) key, through the equipment will not work, so we should pay attention to check the button, or if we let the limiter straight do not work, the pressure limiting device behind the equipment will lose the protection effect.

8, careful operation error: due to equipment, the key, so often prone to misuse, such as: some have a &ldquo electronic divider; × 10” button, be careful not to press it easily. For example, we adjust the frequency of points in the 200Hz, then press the button 200 × 10 will become 2000Hz, so we must avoid misuse.