Dry goods | Amplifier audio maintenance and manual
Some time ago, when I was doing a network public opinion report, I found that many netizens would have problems such as peeling off the box corner. In fact, this is largely due to the lack of maintenance.
Don't think that the appearance of these machines looks like a stupid one that can be tortured. It also needs daily maintenance. How to maintain them scientifically is the key to prolonging their service life.
Therefore, today Xiaobian has smashed some of the enthusiasts' maintenance laws on the Internet, and sorted them out and shared them with everyone~
No.1 Pay attention to the storage environment. The normal working temperature of the amplifier should be 18 °C ~ 45 °C. Too low a temperature will reduce the sensitivity of some machines (such as tube machines); too high will easily burn out components or premature components. Especially in the summer, pay attention to cooling and keep the air flowing. Store it in a dry room, avoid direct sunlight as much as possible, and do not place it in a damp place to prevent high-density mechanism panels from swelling when exposed to moisture.
No.2 Remember not to use it for a long time. It should be used at least 1-3 times a month for more than one hour each time. Otherwise, it will bring a lot of troubles, such as static fatigue of materials, non-polar electrolytic capacitor leakage in the crossover. Some parts are deformed, etc., which affects normal work and affects its life.
No.3 It is necessary to reset the function key every time. If the function key is not reset for a long time, the pulling button spring is under stress for a long period of time, which is easy to cause malfunction.
No.4 Switching machine precautions When starting from the front to the back, the CD player is turned on first, then the front and rear stages are turned on, and the volume potentiometer of the power amplifier is turned to the minimum when starting up. Turn off the power amplifier first, and let the amplifier's amplification function be completely turned off. At this time, when you turn off the front-end equipment, no matter the large impact current, it will not affect the amplifier and the speaker. When the same level is closed, the volume potentiometer of the power amplifier should be turned to the minimum, and the CD player can be turned off or off before being turned off.
No.5 Shutdown and re-wiring Do not open the amplifier to connect the speaker cable, because the speaker's terminal is generally close, and the speaker cable is tightly parallel. When wiring, the speaker cable will be accidentally shorted. The consequence will be to burn the amplifier quickly. Although some amplifiers have protection lines, some HI-FI-class pure power amplifiers often save this part of the protection measures in order to improve the sound quality and reduce unnecessary sound and dye. Therefore, the phrase "shutdown and rewiring" has long been a rule that enthusiasts must follow.
No.6 About the heat engine Just put up some soft music and listen to music at medium volume within half an hour. After the warm-up of the standby device, let's open the big volume and enjoy it. Don't put the loud volume and put some bursting music in the hot machine of the amplifier. The reason is that the power amplifier component is in a cold state just after it is turned on, and then its high current operation will shorten its life.
No.7 Regular power supply For long-term use, especially in humid and hot seasons, it is best to energize for half an hour every day. In this way, the heat generated by the internal components can be used to remove the moisture, and the internal coil, the speaker voice coil, the transformer and the like are protected from moisture and mold.
No.8 After half a year of comprehensive cleaning of the contacts, the metal will be exposed to the air soon, and the surface will be oxidized, tarnished and dull. Even if the surface of the signal line plug is gold-plated, it is not easily oxidized and has close contact with the body plug. However, there will still be some degree of oxidation leading to poor contact for a long time, so it should be cleaned at most once every six months. Just use cotton with alcohol to smear the joints. After doing this heavy work, you can make the contact respond to the best contact, and the sound will be clear and transparent.
No.9 Cleaning the CD player The laser phono obviously has only a small area of ​​the laser phono, but it relies on it to read the marks on the CD, so only a small amount of dust on the phono can affect the reading. The accuracy of the signal. Although most of the CD players have a sealed body, don't forget that there are gaps in the process of discs and discs, so that the dust will be taken in. After a while, the surface of the cartridge will have more or less dust.
At this time, you need to screw the cover screw, open the cover and use a cotton swab to wash the alcohol. When the CD machine that has not been washed for a long time is cleaned, it will give people a feeling of opening a layer of yarn when listening, and the high frequency will be clear to the old days, and the details will be much more pleasant. This step of cleaning the cartridge is done once a year. Even with Pioneer's inverted disc system (the laser head is down instead of upward), the dust is still attracted by the static electricity carried by the cartridge, so it sticks to it. This time is still not saved.
No.10 Try to avoid stacking the equipment based on environmental problems. It is helpless, but if possible, the most important CD source and sound reinforcement should be placed independently because of the overlapping pendulum. Putting it will cause a harmonic shock and affect the machine. When the horn plays music, the vibrating air causes the equipment to follow the vibration. When the two machines are stacked, they will evangelize each other, making the fine information in the music obscure, and interfering with the transmission of each frequency band, causing a kind of sound pollution. Another example is the CD player. When the disc is rotated, the motor is even more powerful, and the impact is even greater. So place the equipment on a stable rack.
No.11 The distance between the split power supply and the host and the mono rear stage keeps the split power supply away from the previous stage. If it is placed in another rack, the overall isolation can be improved in real time. The audio and video will also be accurate. The rear stage of the mono is also the same, and the two pieces of equipment are placed separately to ensure that they are beneficial.
No.12 Abolish the CD machine with adjustable volume output. Many single CD players have adjustable volume output to control the volume with the remote control. If you don't need this adjustable output, you can use it. The earphone output device that is off, even in front of the fuselage, can be abolished if it is not needed. The two sets of signal output are separated by the main signal. Once abandoned, only a set of fixed volume output does not need to thin the energy output of the signal, the sound will be more solid and the force is better than before. To abolish these two sets of output methods is not complicated, just open the cover and pull up the relevant cable inside the machine.
No.13 Household appliances and computers that reduce interference indoors should avoid sharing a set of power supplies with the sound, even if they are put together. Secondly, entanglement of the wiring will also cause the line to absorb noise from each other to destroy the sound quality. Whether it is equipment or cables, it should be kept free from interference from other electrical appliances or power lines.
No.14 The placement of the horn speaker is an important part of the sound. It is inevitable that the playback effect will be greatly reduced. How to find the best placement in the room is a test of personal effort. In addition to constantly listening to the effects of different placements, you can also ask relevant experts to guide.
No.15 The dim environment helps to listen to the effect. Turning off the lights and listening to music is a matter of habit. In the dark environment, the ears will be particularly sensitive, and at the same time reduce the visual obstacles. The sound image reorganization and the position of the instrument will feel more clear and clear. The atmosphere is quite far away from the lighting, and does not like the dark environment. Friends can also use other relatively dark lights to create a listening atmosphere.
No.16 Sound Absorption In the general family environment, furniture and debris are already good sound-absorbing materials. It is not necessary to make the sound absorption too complicated. The carpet has already had a basic sound absorption effect. The advantage of adding a carpet is that it can reduce the reflection of the floor, avoid mixing the sound from the front and cause turbidity. I want to know if my room needs to be carpeted, and I will know if there is any change in the sound on the floor.
When the speaker is too close to the back wall, you can also consider adding a tapestry to increase the sound absorption effect, but be careful not to use too large blocks, otherwise you may even suck the UHF.
In addition, the glass and mirror of the room will have a strong reflection sound, and it needs to be covered with curtains to solve the problem. A friend with high requirements may wish to do more sound-absorbing work on the corners of the corner and the sound reflection points in the room, but pay attention to the sound absorption should not be excessive, and the appropriate amount of reflection sound can help the sound to be lively.
The unconstrained dry goods sharing is over here. After all, Xiaobian is still very knowledgeable. Senior enthusiasts should share their own little tips. Welcome to leave a message in the comment area.
The Hydrogel Screen Protector is made of imported material with TPU as the base material and is combined with hydrogel. It has super ductility and retractability, and can perfectly adapt to curved screens and screens with excessively curved edges, so as to fit perfectly without leaving white edges, and basically does not affect the touch experience. It has a strong and effective self-healing function, is impact-resistant, durable, and has better toughness, and has a certain buffering effect on the collision of sharp objects.
The Hydrogel Film is very thin. The responsive, ultra-thin design gives you a bare-bones experience. It's not as thick as a Tempered Glass Screen Protector, so the hydrogel screen protector won't affect the weight and feel of the phone.
In terms of hand feel, the Hydrogel Screen Protective Film has a hydrophobic and oleophobic treatment, so it slides relatively smoothly, and there is no problem in using APP or playing games. In addition, the liquid spilled on it can be slipped off by just tilting it, which is very easy to clean and maintain.
Ultra Hd Hydrogel Screen Protector,Hd Hydrogel Screen Protector Sheet,Hd Tpu Hydrogel Screen Protector,Mobile Phone Hd Screen Protector
Shenzhen TUOLI Electronic Technology Co., Ltd. , https://www.hydrogelprotectors.com