![]() ![]() This type of connection works fine until you decide to charge your mobile device through a cigarette adapter at the same time. Sometimes whining noise comes into the car sound if you have a mobile device as the audio source through Aux or USB connection, instead of the car head unit. Install Ground Loop Isolator for Mobile Devices It’s because the 12V cable can interfere with the RCA cable, otherwise, and introduce engine noise in your car audio. That is why you should always go for high-quality shielded RCA cables.Īnother thing you need to do is make sure that the RCA cable and 12V power wire coming from the battery should pass from opposite sides of the vehicle – not the same. These cheap wires tend to pick up signals along the signal path which may lead to engine noise in the audio. Many times people go cheap on RCA cables which results in different problems including engine noise. Therefore, you should change your amp mounting location and have a plastic board placed underneath it to see if the noise is gone. Similarly, if the amplifier is in contact with the grounding point and the vehicle’s main body at the same time, you get a ground loop because both of them have different grounding potentials. So if you’ve grounded your head unit to the cigarette lighter instead of the chassis, there’ll be a ground loop. In case you don’t know, a ground loop is formed when system components are grounded to locations with different grounding potential. Amps can have a ground loop noise if their metal casing touches any ground area of the vehicle, resulting in a whine and hum. Sometimes you can get noise if the amplifier is mounted too close to other electrical components(s) in your vehicle. After making the ground connection, you can verify it through a multimeter. Like in amplifier grounding, any bare metal surface with no paint will be good enough. Then we’ll extend that wire and look for an alternate ground location nearby. One of these wires is the black-colored ground wire.įirst of all, we’ll cut that ground wire. Therefore, we’ll have to change the ground location to see if there’s any improvement.Īn aftermarket head unit is connected to the main stereo harness through a bunch of different colored wires combined to form an aftermarket wiring harness. If you’ve recently upgraded to a new head unit, its ground connection can also be the reason behind the engine noise. If you have multiple amplifiers in your car, their grounding points should be different and not located close to each other.The grounding point should not have any paint on its surface.An ideal grounding point is a screw/metal nut directly attached to the vehicle body.The grounding point should be located as close to the amplifier as possible and shouldn’t be more than 18-inch away, in any case.On the other hand, a poor ground connection will cause the amp to overheat, go into protect mode or introduce a whining noise into the car sound.īelow are some of the key tips you can follow when making a ground connection: When it comes to amp installation, a solid grounding is a must as it protects the amp against any electrical overload and stabilizes the voltage levels. In case you’ve recently upgraded to an aftermarket amplifier and only got engine noise afterward, the amp’s ground connection can be the culprit. ![]() How to Get Rid of Engine Noise in Car Stereoīelow we’ll discuss the major causes behind this engine noise and how you can get rid of it. It is characterized by a whining noise that increases every time you accelerate your vehicle and occurs more often in aftermarket car audio systems.Īlthough straightforward, removing this noise is a long process as it can happen for several reasons. May be done instead of upgrading the main battery.One of the most common problems car audio enthusiasts face is the engine noise coming from the speakers. Prevents the amplifiers that are connected to the second battery fromĭrawing any power from the main battery. Which allows the second battery to be charged by the alternator, but ![]() This is accomplished using a dual-battery isolator: a device Your stereo with the car turned off (and be able to start the car again Generally, adding a second battery is great if you want to listen to Problem because batteries like the Optima 800 offer a larger number of Upgrading your current battery to a larger model may help solve the Large) amplifiers if it can't supply enough current to the amplifiers. The stock battery in yourĬar may not be up to the task of running a stereo with multiple (or Supplies all of power to the audio system. The battery is most important when the engine is turned off, because it If using different types and sizes of batterys an isolator is required.Ģ.10 When should I upgrade my battery or add a second battery? As I understand it when running more than 1 battery without an isolator the 2 or more batterys must be Identical in every way. ![]()
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