Hangzhou audio and lighting rental

Zhou City Audio and Lighting Rental [Hangzhou Baosheng Audio Co., Ltd. ◆Contact number ◆ Baosheng Audio New form of audio, new starting point in life] Hangzhou Baosheng Audio Co., Ltd. is a professional import and export brand conference system (such as Beyerdynamic and other audio equipment ). The company has strong technical strength, rich engineering experience, high-quality management team and professional technical talents. It currently has dozens of professional system engineers and maintenance engineers with rich maintenance experience.
In the audio system, several common fault problems are briefly analyzed below
The noise problem is mainly manifested in the speaker having noise, noise or current sound when there is no sound source.
The problem of howling is mainly manifested when the microphone gain cannot be increased or the volume cannot be increased, resulting in acoustic feedback and howling.
Yes, customers reported this problem to us. We clicked, clicked, and quickly ran to the customer's place to take a look. Well, the system had been set up, the wires were soldered without any problems, the sound could be played, and there were no problems with the sound phase. Okay, so how do we solve these two problems raised by customers? Let’s do it one by one and solve the noise problem first.
The first step is to eliminate external factors.
There are only three external reasons for current sound or noise problems: external sound source equipment, excessive noise in the on-site environment and problems with the system power supply. We eliminated them one by one. We first removed the external sound source, then turned off all microphones that were turned on at the scene to block the pickup of ambient noise. Then we checked whether this power supply shared a power supply with other large power systems. Because if it shares a power supply with other large-scale power systems, its use will greatly affect the change of current, thus producing current sound.
The second step is to gradually eliminate various problems in the internal system
In this step, I sorted out my commonly used methods
Small system method
In a system, usually It is composed of pre-stage equipment, peripheral equipment and power-stage equipment. We first remove all the peripheral equipment, such as the mixer connected to the power amplifier, and the power amplifier connected to the speakers, to see if there is any noise. If there is still noise, we will remove the mixer. If there is still, it is the background noise of the power amplifier. It's a quality issue, so we can only replace it, because after all, we are not repairing equipment, haha. If not, it means the mixer settings are incorrect or there is a quality problem. Check whether the gain is adjusted too high. If there is no problem with the small system, then there must be a problem with the discarded peripherals. At this time, we need to add the peripheral equipment one by one, and then check in detail whether it is a device setting problem or a quality problem. For example, whether the noise reducer has been adjusted well, whether the equalizer gain is too large, etc.
Replacement method
In many projects, there may be more than one system, and there may be two or more of the same equipment. We will If the equipment is found to be faulty, replace it with a device that has been debugged and has no problems in other conference rooms. With the same settings, if the problem is solved, it is an equipment problem. If the problem still exists, it means that there are other problems in the system that you have not discovered yet, and we need to check again carefully.
Instrument measurement method
Use a multimeter, level meter and other measuring instruments to measure the speaker impedance and whether the output level of the step-by-step device is normal.
After the above steps and methods, I believe that the noise problem existing in the system will be solved soon.
Three steps to solve the howling problem. This problem occurs because the sound from the speaker is transmitted to the microphone to form a loop, and howling occurs after multiple amplifications. A good way is to physically separate the path between the two. For example, when we choose a microphone, try to use a directional one instead of a non-directional (omnidirectional) one. During use, try not to face the microphone directly. listening to the speaker. However, since there are multiple microphones and the placement of the speakers is fixed and cannot be changed, we can only use peripheral equipment to complete this function, such as feedback suppressors. By finding the howling point, we can adjust the corresponding position on the equalizer. attenuation at the frequency point.
The audio equipment brands we cooperate with are Yama Sound Art, Beyerdynamic, Senova, Royal Bo Triangle, Budweiser Thunderstone karaoke system, Shure, Alice, etc.
Zhou Baosheng Audio Co., Ltd. will continue to do so as always Adhering to the tenet of people-oriented, customer first, and with the business philosophy of integrity, win-win, and credibility first, we provide customers with high-quality technology, high-quality projects, and high-quality services. Think about what customers want, worry about what customers need, and meet every customer's needs A requirement, strive to realize every wish of customers, and serve more customers with better service concepts. Hangzhou Baosheng Audio Co., Ltd.'s integrity, strength and product quality have been recognized by the industry. Friends from all walks of life are welcome to visit, provide guidance and negotiate business.
Zhou Baosheng Audio Co., Ltd.
Telephone number
Address: Huayue Building, No. Huafeng Road, Xiacheng District, Hangzhou
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