Stereo Audio Isolator Common Ground Anti-interference Signal Noise Filter Computer Audio Current Sound CancellerItem NO.: MK03079

Stereo Audio Isolator

Product Introduction:

1. Part selection: Two independent audio transformers are used, and the transformer material is made of aerospace materials.

2. High sensitivity and high reducibility, with a sensitivity of 10-20DB higher than similar low-end transformers. The sound is full and pure.

3. Circuit design: Stereo dual channel independent design, circuit board specification: 45mm * 30mm, very small, suitable for small space and other car interior installation.

4. Connection method: There are two connection methods, which can be input and output through a 3.5mm headphone socket or directly connected through two blue connection sockets.

5. Main function: Eliminate current sound. The common ground isolation audio transformer eliminates the current sound caused by AUX common ground, and the output and output ground wires are isolated through the transformer, so there will be no common ground.

What Is A Common Land?

This product is an audio common ground isolator, which is effective for noise caused by common ground between the audio source and receiving equipment.

Simply put, common ground refers to the fact that the grounding points of two electrical appliances are not at the same point. Due to the difference in grounding resistance, noise is transmitted into the electrical equipment through the ground wire, forming interference. Because the grounding points of the two devices are different, it is possible to generate common ground noise. On the car audio system, there is a type of audio interference, similar to whistling, and the frequency of this noise varies with the engine speed.

Therefore, this product can only eliminate the noise and current noise caused by the common electricity and ground products, and cannot eliminate the noise caused by other reasons. Therefore, it is necessary to personally confirm the source of the noise.

Determine Whether The Noise Is Caused By Common Ground:

1. Connect the headphones to the AUX (3.5mm interface) of the car MP3 and car navigation. If there is no noise heard from the headphones 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 phone or MP3 player (note that the phone or MP3 player should not be connected to any power source in the car, such as a phone) to the AUX on the center console in the car, and play the phone's music. If there is no noise, it can be confirmed that the previous noise was caused by a common ground.

3. Computer, amplifier, audio, CD: Use passive headphones to test for noise when plugged into the computer, and use a mobile phone to test for noise when plugged into the amplifier and audio. If there is no noise when listening separately, it is basically determined that it is caused by a common ground.

4. After starting the car, there is an electric current sound from the installed power amplifier, and some models may experience situations where the throttle increases and the electric current sound increases. This product can solve this problem.

5. There is electric current sound between the amplifier and the speaker or audio system, and this product can be installed between the amplifier and the speaker.

6. If there is noise when connecting the laptop to the projector and the power amplifier at the same time, it can be eliminated by connecting the laptop to the adapter power supply or using a battery. If the noise disappears after unplugging the power amplifier, or if the noise also disappears after unplugging the projector, a common ground isolator can be added between the earphone hole and the power amplifier on the computer to eliminate the noise.