Many friends will hear some noise when using ceiling speakers, so where does this noise come from? How to avoid it?
1. Material
The common ceiling speakers on the market are roughly divided into plastic, iron and low-carbon steel. Plastic is relatively thin and cannot withstand the sound waves generated when the speaker is working. Although iron can withstand it, it is easy to oxidize and rust over a long period of time, and its service life is not long. Low-carbon steel can not only withstand the sound waves, but also will not oxidize and rust (a must-have good product for home)
2. Sound-absorbing cotton
There will be sound-absorbing cotton in the cavity of each speaker, which can eliminate the noise generated by the speaker during working hours, but some merchants have calculated that consumers will not disassemble the speaker to see the sound-absorbing cotton, and some merchants simply do not place the sound-absorbing cotton. Some merchants have conscience, but not many , the sound-absorbing cotton you get is very little, which is also part of the factor that causes the sound noise
3. The material of the audio cable
The material of the audio cable is often easily overlooked by people. A good audio cable can transmit the signal source to the audio well, but a poor audio cable may only transmit half or even less of the signal source to the audio. When choosing, we can choose 4N oxygen-free copper audio cable, which is specially provided for stage lighting venues. When choosing audio cables, everyone should pay attention to choosing multiple protections, so that the service life is longer
The last reason, which is also the most embarrassing one, is that your line is not connected properly, or you connect it to the negative pole anyway.
In short, there are many kinds of noises generated by the audio. If you want to avoid noise, you can pay more attention to the speaker cavity, sound-absorbing cotton, audio cables and other factors when choosing, and most of the noise can be avoided.
