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Speaker maintenance matters Speaker placement skills

2021-06-21 21
After many good audio products have been used and maintained by professional enthusiasts for a period of time, the sound quality will become more honest as if they have been fermented. The longer the use of the audio, the more worthy of fun. So what should be paid attention to when using speakers? Let the editor lead everyone to understand speaker maintenance and speaker placement skills.
 
Speaker maintenance items
 
Pay attention to the new machine test machine
 
When a lot of people buy a new audio system, they can't help but want to plug it in and try it out. You must pay attention when the speaker is not connected to the power amplifier, the test opportunity directly impacts the circuit of the power amplifier. The audio is a passive device, and all the energy comes from the output of the power amplifier. If this road is not connected, if you turn on the power, then the amplifier will be guilty. It is the amplifier that suffers when you turn it on, and your ears suffer when you listen to music in the future. Therefore, be sure to check whether all the devices are connected when you turn on the system, and then turn the volume knob to the minimum before starting the system. If the system makes a strange sound, it is best to shut down and power off, and ask a professional to debug it. Generally, it is not recommended for players to power on and diagnose by themselves, otherwise it will affect the hardware performance.
 
Try to use it at a reasonable ambient temperature
 
The ambient temperature of the audio should be controlled at least between -10℃ and 40℃, and the temperature environment should avoid large fluctuations as much as possible. Excessive temperature changes and the use of audio in extremely low and extremely high environments will cause irreversible damage to the audio system.
 
 
Pay attention to the environmental humidity
 
In terms of environmental humidity, the speaker should be placed at a relative humidity of 50% to 80%. An excessively humid environment will cause premature failure of internal components, or rust inside and outside the machine.
 
Pay attention to voltage frequency
 
The power supply voltage and frequency need to be consistent with the local power. Leaving the speaker working for a long time under non-rated voltage and frequency power conditions will accelerate the aging of the speaker.
 

Avoid excessive dust environment and excessive vibration


Speaker maintenance matters Speaker placement skills

 
In addition to what everyone knows to avoid direct sunlight and heavy pressure, speakers must first avoid dusty environments and vibration environments in the conditions of the placement space. In the audio system, especially the power amplifier is very sensitive to environmental dust. Due to the need for heat dissipation, each power amplifier will have heat dissipation holes. Excessive dust will not only close the heat dissipation holes to prevent heat dissipation, but also cause damage to specific circuits after entering the body. In addition, whether the speaker is a power amplifier or a speaker, leave enough space around, especially don't stack other equipment on the power amplifier.
 
Pay attention to the device switch sequence
 
The audio has the same problem as the computer's equipment switching sequence. The signal source device should be activated first when using the audio. Usually in addition to power amplifiers, we also choose audio equipment such as disc players. When several devices are started one after another, we should pay special attention to the sequence of powering on and off. When starting up, you should first start up the front equipment such as a disc player, and then turn on the power amplifier; when shutting down, turn off the power amplifier first and then turn off the front device. The volume of the speaker should also be adjusted to the minimum when shutting down, which can not only reduce the impact on the speaker when the machine is switched on, but also will not scare you when you turn it on next time.
 
Pay attention to special items
 
Many power amplifiers, such as Yamaha DSP-Z9, have one or two sockets for other devices behind them. This socket must be dedicated to a dedicated seat and cannot be used to connect other high-power devices, such as irons and other household appliances. Whether it is the socket on the back of the power amplifier or the power amplifier's own plug, plugging or unplugging will cause an impact on the system during use and damage the body and speakers.
 
Do not wipe with water for cleaning
 
It is not recommended to use water to wipe when cleaning the speaker. Audio equipment shells are also made of more metal materials, and waterproof speakers are rare, so water will cause corrosion to the shell, and the conductivity of water is not suitable for cleaning agents. If you want to clean the body, do not use volatile solution cleaners, such as gasoline, alcohol, etc., try to choose a soft cloth to reduce scratches on the body.
 
Speaker placement skills
 
Inside axis method
 
Placement method: First place the speakers between one-third and one-half of the length of the room, and then place the speakers as close to the side wall as possible. If the room is too wide, it does not have to be close to the side wall. The inward angle of the speakers should be greater than 45 degrees, and the listening position should be about 0.5-1 meters after the intersection of the projection angles of the two speakers.
 
Effect: If your listening environment is complicated, the sound absorption is asymmetrical, the room is three-pointed and octagonal, the room is too slender, and the sound of your speakers is sharp, the midrange is thin, and the bass is not enough, then the following "axis inside method" "I believe it will help you.
 
Equilateral triangle method
 
Placement method: The first condition is that the speaker must be away from the back wall (at least 1 meter or more) and side walls (at least 0.5 meter or more). The second condition is to draw the two speakers and the listening position as an equilateral triangle. The third condition is that the inward projection angle of the second speaker also needs to be 45 degrees or more. The fourth condition is that this equilateral triangle can be large or small. The square is smaller when the room is small and the power of the rear stage is low; the equilateral triangle can be enlarged when the room is large and the power of the rear stage is high.
 
Effect: This is commonly known as the near-field listening method. Its advantage is that it can reduce the excessive interference of the reflected sound of the four walls on the direct sound of the speaker, so it can get a good sense of positioning and a wide and deep sound field. This is the way to hear the most, the most direct, and the clearest details. Many commentators like to use this method when commenting on audio.
 
Three to seven ratio
 
Pendulum: Divide the length of the room into three equal parts (three), place the speakers at one third of the length (1), and the distance between the two speakers is 0.7 times the length of the two thirds of the room (7). The speaker should have a slight inward projection angle, but it is also possible to have no inward projection. The listening position should not be against the back wall.
 
Effect: This method is used in a space with a large size and a uniform ratio (such as 1:1.25:1.6 or 1:1.6:2.5) to obtain a balanced sound and a wide and deep sound field.
 
Trinity ratio
 
Placement method: divide the length of the room into three equal parts (three), and the width is also divided into three equal parts (three), and the speakers are placed at the first intersection of length and width (one). The speakers can have a slight inward projection angle, even without projection inward, and the listening position cannot be against the back wall.
 
Effect: This method is also used for large-sized and even-proportioned spaces. It is consistent with the spirit of the "Three One Seven Proportion Method". The only difference from the "Three One Seven Proportion Method" is that the space between the two speakers is narrow. This method can also get a balanced sound and a wide and deep sound field.
 
Long back wall swing
 
Arrangement: In a rectangular room, the general experience of playing audio will use the short side as the back wall of the speaker. But this "Long Back Wall Pendulum Method" does the opposite, using the long side as the speaker back wall. The speaker must be at least 1 meter away from the back wall, and the distance between the speaker and the side wall must be at least half a meter. The distance between the two speakers and the position of the listener are drawn into an equilateral triangle, and the inward projection angle of the two speakers should also be at least 45 degrees. The listening position must not be attached to the wall, at least one meter away.
 
Effect: If you feel that the low-frequency volume of your audio system is not enough, then you can try the "speaker long-side rear wall placement method" introduced now. However, it should be noted that this pendulum method has both gains and losses for the sound. Although the sense of volume in the mid and low frequencies has been enhanced, the depth of the sound field has become a bit worse, so if you want to get a balance between this, just It's up to you to slowly move the distance to play.
 
Wall-to-wall method
 
Arrangement: This is the oldest arrangement. Place the speaker close to the back wall, whether it is 50 cm, 30 cm, or 20 cm from the back wall, it doesn't matter, you can deploy it yourself. Usually speakers do not need to project angles inward.
 
Effect: Use when the high frequency is sharp, the middle frequency, and the low frequency are weak. It can make the middle frequency and the low frequency full, and the whole high, middle and low frequencies can be balanced. However, it also makes the depth of the sound field shallower and narrower. However, when weighing against the harsh and unpleasant sound, it is the right way to sacrifice the performance of the sound field to obtain a nice sound.
 
Diamond pendulum
 
Placement method: This method is limited to square space. The square space is regarded as a rhombus, and the speakers are placed on the two sides of the rhombus against the wall. The diamond-shaped sharp corners behind the speakers and the diamond-shaped sharp corners behind the listening position need to be diffused with circular or cylindrical sound waves. The second speakers should not be too close to the side wall.
 
Effect: This law deals with the problem of too strong bass boom and standing wave in square space. If the square space does not want to be placed like this, then a lot of furniture must be packed in to "smooth" the standing waves.
 
So the speaker maintenance items and speaker placement skills are introduced here. Is there anything unclear? I hope it helps everyone.
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