[Home Theater Network HDAV.com.cn] Home theater audio is generally more expensive, and it is more troublesome to repair, so we try to extend their service life, to make them last longer, from the time of installation It's maintained. What is the scientific maintenance? Here are some basic common sense for daily maintenance. 1, the normal operating temperature of audio equipment should be 18 ° C ~ 45 ° C. Too low a temperature will reduce the sensitivity of some devices (such as tube machines); too high will easily burn out components or premature components. Special attention should be paid to cooling and maintaining air circulation in the summer. 2, audio equipment should avoid direct sunlight, but also to avoid close to heat sources, such as heating. 3. After the audio equipment is used up, the function keys should be reset. If the function key is not reset for a long time, the pulling button spring is under stress for a long period of time, and it is easy to cause malfunction. 4. Before switching the audio power supply, turn the volume potentiometer of the power amplifier to the minimum, which is the most effective protection for the power amplifier and the speaker. At this time, the power amplification of the power amplifier is almost zero, at least in the case of misoperation, it will not cause damage to the speaker. It is best to turn off the plug when plugging and unplugging the cable. 5, from the front to the back of the boot, that is, first open the CD machine, then open the front and rear levels, turn the power amplifier's volume potentiometer to the minimum when booting. 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. Also turn off the power amplifier's volume potentiometer to the minimum when it is turned off, and turn it off and turn it back on before it can be connected to the CD player. 6. Don't plug in the wiring. Basically, all speaker products can't plug in the sound cable when playing music or turning on the high volume, because the plugging will cause the contact current to be unstable, thus producing sharp sounds and beats. These high frequency sounds It may damage the speaker unit and is more likely to "burn the speaker". Therefore, the user should develop the habit of plugging in the power before plugging the power, so that the speaker can last longer. 7, the machine should be used. Commonly used can extend the life of the machine, such as some parts with a motor (recording stand, laser player, laser disc player, etc.). If it does not rotate for a long time, some parts will be deformed. 8, you must regularly power on. In the long-term non-use, especially in the humid, hot season, it is best to power on 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. 9. Wipe the surface of the machine with a clean, damp soft cotton cloth at regular intervals; when not in use, cover the machine with a dust cover or cloth to prevent dust from entering. Many players like to remove the air filter of the speaker to make the sound quality clearer. However, if the speaker is not protected, it is likely to accidentally damage the unit position, especially the mid-range speaker is a "high-risk family." If the user wants to enjoy high-quality music enjoyment, it is best to remove the dust-proof net of the front three speakers. It is better to put a dust-proof net on the back. When you use it, remember to cover it back to reduce the accident. 10. From the principle of electronics, any electronic device should not be connected or disconnected from other devices during live working. I don’t think too much to explain to friends, it is very dangerous to plug in active devices. Passive devices such as microphones do not promote live plugging. Need to be reminded is not to open the amplifier to connect the speaker cable, because the speaker's terminal is generally close, the speaker cable is two tightly parallel, the wiring will often accidentally short the speaker cable, its The consequence will be the rapid burning of the amplifier. 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. 11, some pay attention to some enthusiasts in the power amplifier heat machine will not twist the volume and put some burst of music, the reason is that the power amplifier components are in the cold state just after the boot, then let its high current work will shorten its life. Therefore, some enthusiasts only put some soft music and listen to music at medium volume within half an hour after starting the power. After the warm-up of the standby device, the volume is appreciated.
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