Description
Audio Noise Common Ground Noise Isolator 3.5mm AUX Noise Filter Isolator Car Audio Navigation GPS Current Sound Filter
Product Description
Audio equipment common ground isolator to solve the noise, noise and current caused by the common ground of the common power supply of the computer and the public broadcast mixer system, the car amplifier and the external audio source equipment (car computer, GPS navigator, MP3, MP4, mobile phone, etc.) sound. With shell, both ends are fixed, convenient and fast. The input and output are 3.5 headphone jacks, you can customize the input and output
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Feature
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Compact size, easy to install.
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No external power supply, passive isolation, eliminate noise.
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Professional symmetrical design effectively reduces noise.
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High-quality materials and stable and reliable performance.
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Support plug and play, support hot plug.
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Please note that not all noise is common ground noise!
Please make your own judgment whether the noise source of your device is brought by the common ground. If you buy this product without knowing the cause of the noise source of the device, it may not be able to play a good role in coupling and isolation. Once again, this product is mainly used for multiple devices in the car, and can only solve the noise caused by common ground interference! ! If the noise other than the above situation occurs, it is not caused by multiple devices. For example, it may be caused by the failure / noise of the power amplifier board, or the sound source signal and the connection line. Noise problems, please check your own before buying.
FAQ
1, What is common ground? This product is an audio common ground isolator, which is effective for the noise caused by the common ground of the sound source and the receiving equipment. To put it simply, common ground means that the ground points of the two electrical appliances are not at the same point. Due to the difference in ground resistance, noise is transmitted to the electrical equipment through the ground wire and forms interference. Because the grounding points of the two devices are different, common ground noise may be generated. On the car audio, there is an audio interference, like a whistle, the frequency of this noise will change with the speed of the engine. This product can only eliminate the noise and current sound caused by common electric and common ground products, and cannot eliminate the noise caused by other reasons, so you need to confirm the source of the noise yourself.
2, Determine whether the noise is caused by common ground: 1. Use the headset to connect to the car's MP3 and car navigation AUX (3.5mm interface). If the sound heard from the headset is no noise at this time, you can confirm that the noise of the car equipment is caused by the common ground. 2. Use the audio cable to connect the 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 the AUX in the car's center console, and play the mobile phone's music, so there is no noise , You can confirm that the previous noise is caused by the common ground. 3. Computer, power amplifier, audio, CD: use passive headphones to plug in the computer to check whether there is noise, use a mobile phone to plug in the power amplifier and audio to test, if there is no noise in the separate test, the basic judgment is that it is caused by the common ground. 4. After starting the car, the installed or modified power amplifier has current sound. Some models will also have a situation where the throttle is greater and the current sound is louder. This product can solve this problem. 5. When the laptop is connected to the projector and the amplifier is connected to the power amplifier, there will be noise. You can connect the adapter to the power supply or use the battery through the notebook. At this time, unplug the amplifier and the noise disappears, or remove the projector and the noise disappears. Add a common ground isolator to eliminate noise. If the noise other than the above situation occurs, it is not caused by multiple devices. For example, it may be caused by the failure / noise of the power amplifier board, or the sound source signal and the connection line. Noise problems, please check your own friends before buying, this is very important!
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