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In our daily work and service process, customers often report that their home theater audio system is not easy to use. Not only does the sound change but also makes a squeaky sound from time to time, which is unbearable. The problem, most of which is not the problem of the audio itself, but the user's mistakes in the use and maintenance of the audio, therefore, the high-end cinema custom company Zhiyue intelligent audio and video to share with you the correct use and maintenance of home theater audio !
1, do not hot plug the line
Power amplifiers must not be hot-swappable signal lines, especially HDMI cables. Although the HDMI cable supports hot swapping in theory, there are many examples of hot-swap and burn-out amplifier output modules in practice. I often encountered similar Kindle products like brand name products. Because the anti-static protection circuit used in the design of the transmission and reception chip is generally only resistant to 5-8 kV electrostatic voltage, in actual life, if the environment is dry and there are conditions for generating electrostatic voltage, it may be generated. Tens of thousands of volts of electrostatic voltage are common. At the well-designed source and display terminals, ESD protection circuits are typically configured at the expense of some capacitance margin. However, some machines do not have an ESD protection circuit in order to save costs, and it is possible to burn the chip when an electrostatic HDMI cable is inserted.
2. Turn the speaker volume to the minimum before switching on and off.
The power amplifier chip is most afraid of large (instantaneous) current direct impact, so it is best to turn the volume to the minimum when the speaker is turned on and then turn it on again. When turning off the power, first turn down the volume and then turn off the power.
3, avoid direct sunlight
Most of the speakers are wooden structures, veneer finishes, long-term direct sunlight, which will cause the wood grain to foam, and the serious speaker box deformation will produce cracks. So, try not to put the speakers on the window or balcony. If there is really no way, you should also cover the speaker with a sunshade cover and remove it when you listen.
4, the latter stage of the heat is not too close to the speaker
The reason why the heat generation of the power amplifier is large is that the input impedance of the speaker is smaller than the output impedance of the power amplifier. It is recommended to add a fan to dissipate heat in the power amplifier. At the same time, the rear stage should not be too close to the speaker, and the power amplifier should not be driven to the maximum sound. Not only the sound is not good, but there is also the danger of burning the horn and the amplifier.
5, do not place in places with excessive humidity
Long-term placement of power amplifier products in places with excessive humidity can cause internal metal parts to rust. Speakers should not be placed in places with excessive humidity. Most of the components of the speaker are sensitive to changes in temperature and humidity, such as veneer, paper cone, treble film, hanging edge, centering bracket, adhesive, voice coil and so on. If the humidity is too high, it will cause foaming on the surface of the cabinet or even damage to the cabinet. In particular, the cone of paper cone material will rot after absorbing moisture. Most of the bad-horned horns are caused by excessive humidity in addition to external forces.
6, the correct switch sequence
The sound system is generally composed of a disc player (turntable + decoding) - preamplifier - post-amplifier - speaker. The power is turned on in order according to the order of signal transmission. It should be emphasized that the latter stage must be opened last time. Because of the signal current surge when various devices are turned on, first turning on the power amplifier will greatly damage the power amplifier circuit and even burn the original!
The above 6 steps are quite simple, but they cannot be ignored. The majority of home theater system users must not treat their own theater system with their own convenience. If the home audio system is used and maintained properly, you can ensure that your audio equipment is at its best. Good state, while also increasing its value preservation effect, on the contrary, it will inevitably lead to bad feelings in your audiovisual experience!
High-end cinema customization company Zhiyue Intelligent has become a large-scale home theater system and smart home system integrator in North China. We have been committed to spreading high-quality lifestyles to our customers. The main body is to undertake high-end residential, club-style home theater, smart home projects, provide audio and video equipment sales, indoor acoustic optical design, audio-visual room acoustic decoration, intelligent central control programming, audio and video debugging. , smart home design and installation services.
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