Some issues that should be noted when using audio systems
In daily life and work, the frequency of using a sound system is very high, but many aspects without careful consideration can easily cause damage to the sound system. To avoid damaging the internal unit structure of the audio system, we need to learn to operate the audio system correctly. A sound system is composed of a card holder, equalizer, AV amplifier, VCD player, and tuner. Most people try to save time and convenience by simply plugging and unplugging the power supply when turning on or off. Any electrical device operated in this way will directly affect the internal system unit structure, and will generate surge current and backpeak voltage when plugging and unplugging. Most equipment damage occurs at the moment of turning on or off, so, We should pay more attention to scientific rigor when using it. At present, the manufacturing process and technology of audio systems have become increasingly perfect, and civilian audio systems are gradually becoming more specialized. Therefore, whether we choose civilian or professional audio systems, we must carefully consider their operational issues. There are three reasons: 1. When purchasing or using audio systems, it is necessary to combine the design of the surrounding sound environment in order to achieve better acoustic effects; 2. The presence of whistling, noise, or distortion of the original sound in the audio system can affect our hearing, especially in children; 3. Improper operation can shorten the service life of the audio system and units, indirectly causing economic losses to us. Therefore, it is important to correctly switch on and off the audio system. When switching on and off the audio system, we need to grasp the order of each unit's switch, start the system in the direction of the sound source signal flow: turn on the card holder, VCD player, tuner, equalizer, and finally turn on the power amplifier. Simply put, the correct way to operate the audio system switch is to first turn off the amplifier and then turn off other devices.
Purchase of stage lighting and sound equipment and inspection methods for common problems
Sound engineering has strong comprehensiveness and high technical requirements, but how is sound engineering carried out in practical work? So understanding this issue can be helpful for everyone to further understand the work of sound engineering, and it will also provide a clear idea for the key learning of engineering technology. The most important part of sound engineering is engineering design work. While determining the engineering tasks, it is necessary to quickly contact relevant building decoration and power supply departments, reach consensus on indoor building structure, decoration scheme, power supply, and other aspects, and then formulate an overall plan based on the actual needs of users. Specific design work can only be carried out after this planning scheme is approved by them. After the design scheme is confirmed, necessary preliminary work such as laying pipelines and welding installation brackets should be carried out simultaneously. Otherwise, with the progress of building decoration, the construction difficulty of sound engineering may become increasingly difficult. Once the raw and auxiliary materials are ready, the ordered equipment is basically in place, and other construction projects have been completed, the construction of the sound engineering should be fully carried out. In addition, the acoustics shall carry out detailed calculation in terms of architectural acoustics and distribution power, and propose corresponding feasible rectification opinions according to the calculation results. After obtaining approval from users and relevant collaborative units for the design, equipment selection can be carried out according to the design scheme and overall plan. Equipment selection involves the final quality of the project and the economic interests of the company, so this is also a relatively important task. After the completion of sound engineering design, the equipment is comprehensively and meticulously adjusted, with the aim of achieving the best performance in the corresponding system in a specific environment, and ultimately achieving the best results in mutual coordination.
What issues should be noted during the use of conference audio
The continuous improvement of socio-economic and technological levels has led to the emergence of high-tech products. Nowadays, company conference room equipment is gradually realizing automation and intelligence. Multifunctional conference room equipment can not only improve conference efficiency and bring unexpected good results, but also provide a more comfortable conference environment. As one of the important equipment in conference rooms, understanding which brand of conference audio has good quality for purchasing is only the first step, and it is also particularly important to require correct operation and use of it. So, what issues should be paid attention to during the use of conference audio? What issues should be noted during the use of conference audio? 1、 Installation environment. The working environment temperature of conference audio has certain requirements. If the temperature is too low, it will affect the sensitivity of the internal sensors of the audio equipment; If the temperature is too high, there may be burning out of components or leisure aging. Pay special attention to cooling and maintaining air circulation. 2、 Power circuit design. If the circuit design is unreasonable, it may cause noise in the conference audio system. The occurrence of noise may be due to poor grounding of the entire system, and the required grounding resistance must reach a certain value; At the same time, check if there are any devices near the device that may generate electromagnetic radiation, as communication devices such as microphones near conference speakers may produce noise during use. Therefore, it is necessary to design the power supply, microphone, and other circuit equipment well to prevent signal interference and noise in the audio system. 3、 Remember to reply to the function button after using the conference audio system. If the position of the function key is not restored for a long time after use, it will cause the traction spring to stay in the open state for a long time, which can easily cause disconnection between the function key and the device, ultimately leading to abnormal function failure. 4、 Use potentiometer flexibly before and after using conference audio. The potentiometer of the volume should be adjusted to the lowest before using the conference audio, and it is also better to adjust it to the lowest before closing so that the power of the audio power amplifier can reach the lowest state, so as to avoid abnormalities during the opening and closing operation and also protect the audio power amplifier and sound quality. 5、 Conference audio machines should be commonly used. Commonly used can actually extend the lifespan of machines to a certain extent, such as some parts with electric motors (such as recording card holders, laser players, etc.). If it does not rotate for a long time, some parts will still deform. 6、 Ensure the frequency of use of conference audio to ensure that the equipment can be regularly powered on. If it is not possible to frequently turn on the equipment, especially during humid and high temperature seasons, ensure an appropriate daily power on operation time. This can use the heat generated during the operation of internal components to drive away moisture and prevent internal coils, speaker coils, transformers, etc. from getting damp and moldy.
Common problems and solutions in using bar audio systems
The need for long-term working conditions increases the number and frequency of bar audio systems, making it inevitable that some common problems may arise at times. In order to create a good leisure and entertainment environment for consumers, we must use professional knowledge to solve common problems related to bar audio. Common problems and solutions for bar audio: 1. Volume adjustment problems and solutions: Most people often turn the volume adjustment button to full when using the audio, and the attenuator of the rear power amplifier is at -6dB or -10dB. Therefore, adjusting the mixing console often results in damage to the sound quality, which can easily lead to problems such as sound roaring, external noise, and sound distortion. Solution: Maintain the same volume, while also controlling the decibel output voltage (usually 6dB) of the mixer or front stage to be twice as high to ensure sufficient input margin. 2. Audio and power amplifier configuration issues and solutions: The excessive output power of the power amplifier is the main cause of damage to the tweeter unit. In professional settings, speakers can generally withstand a large signal impulse of 3 times the rated power, and an instantaneous peak impulse of 5 times the rated power is also within the acceptable range, but this does not fully guarantee the sound quality of the external playback. Solution: Under normal usage conditions, the rated output power of the power amplifier should be maintained within the range of 2-3 times the rated power of the speaker to ensure that the power amplifier does not cause distortion at the maximum power of the speaker. 3. Use problems and solutions of frequency divider The frequency divider is selected too low and bears too much power burden, which is easy to burn out the tweeter, and the same is true for the mid-range horn. Solution: When using a frequency divider, the frequency divider should be strictly selected according to the operating frequency range of the speaker provided by the manufacturer. 4. Equalizer adjustment issues and solutions: The high and low frequency parts of the equalizer are raised too high, causing phase distortion that seriously stains the music. At the same time, this is often the main cause of the burning of the high pitch unit of the audio system, and the short circuit burning of the speaker is also a market occurrence. Solution: The frequency equalizer is set to compensate for various defects of the indoor sound field and uneven frequencies of speakers. When we use it, we should pay attention to the actual spectrum analyzer or use other instruments for debugging. The transmission frequency characteristics after debugging should be relatively stable within a certain range.
