Interpreting Public broadcasting background music

Why do many enterprises, office buildings after the installation of the background music system will think of the room to install the volume control switch? and our design and construction of the background music system has never had a need to add Volume control switch, this is because we know what kind of occasions need to what kind of horn, need what kind of power, need how to set horn, our background music system whether you are standing or sitting or walking, Can make you clearly listen to the clear, said here you will also feel that this is too easy to achieve, put more speakers or increase the volume is OK? However, the most important point is how to make every corner to listen to the clear, but also let people listen to the comfortable, not noisy, do not affect the office, do not affect your conversation, do not affect the thinking, do not affect the answer call?    
for theaters, concert halls, multi-function hall, such as the high level of sound requirements, in addition to equipment selection and architectural design to take the necessary assurance measures, in the installation and commissioning should check the problem:  
first, transmission line inspection  
broadcast transmission lines are divided into indoor and outdoor wiring, inspection should be checked line terminal disconnect from the device, according to the construction plan, broadcast system map to check the transmission wiring is correct, whether there is short circuit, circuit breaker, mixed line and other faults; The terminal number is complete, correct, whether the terminal is welded. For the trouble to be detected by each of the elimination, and the terminal to tighten the connection, each plug, socket connection whether the use of welding, wiring is correct and reliable, the shielding layer connection is complete and satisfactory, in line with the requirements.   
second, mating inspection  
according to the construction drawings to check each circuit or the line between the speaker device adapter is correct, especially the connection terminal of multi-tap transformer is often easy to connect the wrong, pay attention to check leakage, multi-connection, transformer primary secondary reverse phenomenon; According to the figure of the transformer model, capacity and impedance match,  
third, the insulation resistance determination  
The two terminals of the broadcast line are disconnected, and the insulation resistance between the wires is measured with a 500V meter. The measurement project is: wire and wire and wire and ground insulation resistance, insulation resistance is generally not less than 0.5mω, for each circuit resistance should be carried out in the sub-loop measurement, the measurement value should be filled in records, as the contents of the debug report to the construction unit for safekeeping.   
four, grounding resistance measurement  
the power frequency grounding resistance of the broadcast room amplifier, arrester, etc. is generally not more than 10ω, when the capacity of the broadcast system Wabove, such as a separate set of Earth pole is difficult, can be used with the electrical device a group of grounding poles, but this grounding requires grounding resistance should not be greater than 4 Ω, and should be set up a dedicated grounding trunk.   
Five, power supply test  
to the AC power supply voltage measurement, power supply line should not be short-circuit, open-circuit phenomenon, on the power switch to do on-off operation test, check the power display signal; Backup power interchange Device inspection test, battery output voltage measurement, rectifier charging device to check and measure; Verify that the power supply unit is working reliably.   
six, System open test 
Many people think that the public broadcasting system, as long as a few ceiling speakers, outdoor audio with enough power of the constant voltage amplifier, connected in parallel, then the line, if the idea of holding such a design or purchase of public broadcasting system equipment, the result is either spent a lot of money to buy expensive horn but the effect is generally like, Or the money to buy horns is used to "force" everyone's ears.   
     How to make the public broadcasting system into a true sense of "background music" to edify sentiment, let you listen to the clear, listening to the comfortable, listening to the fun, this is our ability to be! For more information, please pay attention to Nanjing Feng Jing Electronic Technology Co., Ltd.www.njfhsa.cn ,Welcome to contact our National hotline: 4000-333-102

Interpreting Public broadcasting background music