Bộ Lọc Cách Âm Cho Loa Hifi

Audio Isolation Transformer Features:
Parts Selection: Two independent audio transformers are used, and the transformer material is selected from aerospace materials.
High sensitivity and high reduction, 10-20DB higher sensitivity than similar low-end transformers, full tone, pure sound quality.
Line design: stereo two-channel independent design, circuit board specifications: 45MM X 30MM, very small, suitable
Small cars and other interior installations.
Connection method: Two connection methods, which can be input and output through a 3.5MM headphone jack, or can be directly wired through two blue wiring jacks.
Main function: Eliminate current sound. A common ground-isolated audio transformer eliminates current noise from the AUX common ground. The output and output ground lines are isolated by the transformer and there is no common ground.
Here are some noises and common ground common sense.

What is common land?
This product is an audio common ground isolator, which is effective for the noise caused by the common ground for the audio source and the receiving device.
To put it simply, a common ground is that the ground points of two electrical appliances are not at the same point. Because of the difference in ground resistance, noise is transmitted through the ground wire into the power equipment, forming interference. Because the two devices have different grounding points, common ground noise may occur. In the car audio system, there is an audio interference, which is almost the same as the whistling sound. The frequency of this noise will change with the speed of the engine.
Therefore, this product can only eliminate the noise and current sound caused by the total common-electricity products, and cannot eliminate the noise caused by other reasons. Therefore, you must confirm the source of the noise yourself.

Determine whether the noise is caused by common ground:
1. Use headphones to connect with AUX (3.5mm interface) of car MP3 and car navigation. If there is no noise from the earphone at this time, it can be confirmed that the noise of the car equipment is caused by common ground.
2. Use an audio cable to connect a battery-powered mobile phone or MP3 (note that the mobile phone and MP3 should not be connected to any power supply in the car, such as a telephone) and connect it to the AUX on the center console of the car, and play the music of the mobile phone so that there will be no noise. , you can confirm that the previous noise was caused by a total of land.
3, computer, amplifier, stereo, CD: use passive headphones to plug in the computer to listen to whether there is noise, use the phone plug in the amplifier, audio audition, if you try to hear both without noise, the basic decision is caused by a total of.
4, after the start of the car, the installed amplifier has a current sound, some models will appear more throttle, the greater the current sound, this product can solve this pro