Audio Ground Loop Isolation Filter
Product Features

- Noise Elimination: Specifically designed to eliminate audio noise. It can effectively get rid of the low frequency AC 'buzz' background noise on the audio ground loop caused by the 60Hz mains supply. Moreover, it has a good inhibitory effect on high frequency noise caused by common mode interference and can reduce the current noise of the isolator.
- Impedance Matching: The input and output impedance of the audio should be matched within the range of 300 - 600 ohms. Otherwise, THD (Total Harmonic Distortion) of the audio quality may occur.
- Lightning Protection and Surge Absorption: It has a certain lightning protection function and can absorb surges. The withstand voltage between the primary and secondary of this product can reach about 500V.
- Stereo Requirement: For stereo audio, a dual hannel design is required, and the crosstalk between channels should be small enough.
Product Scope of Application

This is an unbalanced broadcast grade RCA to unbalanced broadcast grade RCA passive audio isolator. It is mainly used in high level audio visual equipment rooms such as broadcast and television studios, satellite ground receiving stations, communication network rooms, unit conference room facilities, multifunction halls, multimedia classrooms, dance halls, and theaters. When various AC noise interferences occur during the connection of audio equipment, simply connect this product in series to the audio line to eliminate these interferences and improve the signal transmission quality.
Common Problems and Solutions

1. Large current noise from the pickup to the DVR audio system: There is a loud 'buzz' current noise.
2. Current noise when a laptop is connected to a projector and an amplifier: The current noise persists even when the laptop uses its built - in battery instead of the power adapter. However, the noise disappears when the projector is unplugged.
3. Current noise in car audio systems: When the car engine is started, the speakers of the car amplifier or the active subwoofer may produce current noise and other noises. In some car models, the noise may increase as the accelerator is pressed harder.
4. Noise when connecting a computer to a mixer or audio system: The computer works fine with headphones but produces noise when connected to a mixer or audio system.
5. Noise when a computer is connected to a projector and a mixer: The computer works fine with headphones, but noise appears when connected to a mixer.
6. Noise when a laptop is connected to a mixer with an external power supply: The noise disappears when the laptop uses its built - in battery.
7. Distance - related noise when a computer is connected to a mixer: Noise occurs when the distance between the computer and the mixer is long, but it disappears when they are close. Using a better audio cable can improve the situation, and using the audio isolator can completely solve the problem.
8. Noise when a computer is connected to a home projector with VGA and audio: Noise appears, but it disappears when the VGA cable is unplugged.
9. Noise when a computer is connected to a mixer with a power adapter: The computer works fine on battery power but produces noise when connected to a power adapter.
10. Distance - related noise between a computer and a mixer: The connection is normal when they are close but noisy when they are far apart. Using the audio isolator can completely solve the problem.