It's unbearable that the home theater stereo makes a hissing sound from time to time. In fact, most of the problems are not caused by the stereo itself, but by the user's mistakes in the use and maintenance of the stereo. Therefore, Shandong professional audio manufacturers want to share with you how to use and maintain the home theater stereo correctly!
1. Do not hot plug the cable
The power amplifier class must not hot plug the signal line, especially the HDMI line. Although the HDMI line theoretically supports hot plug, in practice, because there are many instances of hot plug burning the power amplifier output module, our after-sales service personnel often encounter similar products burning HDMI.
Because, when designing the sending and receiving chip, the anti-static protection circuit adopted by the signal line can only withstand 5-8 kV static voltage. However, in real life, if the environment is dry and there are conditions for generating static voltage, it is common to generate tens of thousands of volts of static voltage.
In the well-designed source and display terminals, ESD protection circuits are generally configured at the expense of some capacitance margin. However, some machines do not have ESD protection circuit in order to save costs, which may burn the chip when the static HDMI cable is inserted.
2. Turn down the volume of the loudspeaker before turning on/off the machine
The power amplifier chip is afraid of direct impact of large (instantaneous) current, so it is better to turn down the volume when the speaker is turned on, and then turn it on again. After turning it on, you can normally turn up the volume. Turn down the volume before turning off the power.
3. Avoid direct sunlight
Most of the speakers are made of wood, with wood veneer. Long term direct sunlight will make the wood grain blister, causing serious deformation and cracks. Therefore, try not to put the speaker near the window or balcony. If there is no way out, you should also cover the speaker with a sunshade and take it off when listening.
4. Don't put the speaker too close to the rear stage with high heat
The reason for the high heat generation of the rear stage of the power amplifier is that the input impedance of the speaker is smaller than the output impedance of the power amplifier. It is recommended that a fan be added to the power amplifier to dissipate heat. At the same time, the rear stage should not be too close to the speaker, and the power amplifier should not be turned on loud when it is good. In this way, not only the sound is bad, but also the risk of burning the horn and the power amplifier.
If the home audio system is used and maintained properly, it can ensure that your audio equipment is in good condition, and at the same time, it can increase its value maintenance effect. Otherwise, it is bound to cause a bad feeling in your audio-visual experience! So you should pay attention to the relevant use and maintenance methods. You can come to our website http://www.opensourceagility.com Ask for more!