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Install ground loop isolator car audio11/30/2023 ![]() Most stores that sell radios will have these line chokes near the installation parts. ![]() ![]() When using these substandard products, your A/V receiver has to deliver 3x more current or compromise the output Level. The standard A/V receiver output is 600 yet most ground loop isolators on the market today have 200 at best. They used to be more commonly used years ago but most electronics now has to meet Class A or B emissions and be tested to not interfere with other electronics (i.e. Expanding on Earthquakes line of audio problem-solving products: The GLI-200 ground loop isolator. WisWinDa 3. This common mode filter will block any conducted, high frequency noise from entering the radio power supply. BESIGN Bluetooth Ground Loop Noise Isolator for Car Audio/Home Stereo System with 3.5mm Audio Cable. Personally, if I new the grounding was correct, I’d try a different charger first.īarring that, you could install a line choke filter on the power supply for the radio to augment its own filtering. The ground loop can be eliminated in one of two ways: Remove one of the ground paths, thus converting the system to a single point ground. Likewise, an ungrounded antenna will pick up the slightest radiated noise and feed that right into the radio. Currents flow through these multiple paths and develop voltages which can cause damage, noise or 50Hz/60Hz hum in audio or video equipment. Plug the red and white RCA connectors into their respective - usually color-coded - jacks on the ground loop isolator. WisWinDa Noise Isolator RCA Audio Hum Eliminator (No Affects Bass) Noise Filter Aluminum Shell Ground Loop Noise Isolator for HiFi Stereo Home Theater Car Audio Player Plug&Play (Silver-Gray) 5899. Step 2 Unplug the RCA cables from the amplifier. This allows the radio’s internal filtering to bypass any noise conducted on the power supply input lines into the chassis ground. Open the trunk or hatch and locate the amplifier, or locate the amp and its RCA jacks wherever they are in the car. Naturally, grounding of both the new radio and the antenna feeding it is important. Is this a charger from a reputable manufacturer or some cheap unit? It sounds like they omitted any type of line filtering and the high frequency switcher is back flushing into the car’s electrical system or radiating a heck of a lot of noise. If the problem only manifests itself when you plug in the charger for the phone, it’s not a ground loop problem. Solve the problem by installing a ground loop isolator, which is simply a transformer that prevents DC current from flowing back through the audio.
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