Avoiding this problem is very simple
2017年12月4日Try to figure out what is causing the noise. As said before, it is very difficult to find out what is causing alternator noise.
If you have tried everything , and still have that annoying noise, contact your nearest car stereo shop.
Avoiding this problem is very simple: DON’T run power and RCA wires together. Ground loops:
Your car’s electrical system (and your stereo) use the car metal chassis as a ground (there is always current flowing through your car’s metal parts). That is why you would hear alternator noise coming from mids and tweeters, but not subwoofers, since subwoofers only play low frequencies. If there are points in which they do have to cross, do the level best to place them perpendicular to each other.
If noise disappears, you know the problem is maybe RCA wires or grounds hooked up to crossovers/equalizers.
Troubleshooting
If you installed everything as described abpe and you still have noise, then try to troubleshoot what is causing the noise .9% of the time you will be wasting your money in buying noise filters. If the engine spins quicker, noise frequency is higher.
. Theoretically the car’s metal has no resistance, and it should not be an issue where you tie grounds for amplifiers, radio, battery and alternator. Conversely, if there is a magnetic field perpendicular to a wire, current will sheet metal welding welding be induced. Some stores may be hesitant to fix something they did not install. 99. They all should "look" like the same point, right? Well, the metal in your car does have resistance, and there is a potential difference from the front of the car, where the battery is to the middle of the car, where the radio is, and to the back of the car, where most amplifiers are. For example, if you have crossovers, equalizers, etc, bypass them by hooking RCA wires straight from the radio to the amplifier. First, recheck grounds at amplifiers, crossovers, radio, etc.
Don’t buy noise filter boxes unless you are sure that the head unit or equalizer are causing the noise. There should be very little difference between the measured voltages. If you have 2 or more amplifiers, DO NOT go from the ground terminal of one amp to the other and then from there to ground, most likely you will have noise. If you have your RCA wires from the radio or equalizer to the amp running in parallel to your power wires, an AC current will be induced and added to the sound signal. If noise stays the same, then problem is the amplifier, if it switches, noise is coming from previous components up the line. Use at least 10 Gauge wires for the grounds (and power). If there is a difference more than 1/2 volt, then you might have noise problems. Make sure AM/FM antenna has a good ground. The potential difference of the grounds makes the whole system act as an antenna, where they pick up noise. Shop around for a good store.
To solve this problem, make sure that the amplifiers have a good ground first. Run the power wire from the battery to the amp on one side of the car, and the RCA wires along the other side of the car. The sound signal travelling to the amp is a low voltage signal (in the mV range - thousands of a volt).
What causes alternator noise?
1. The induced signal will be amplified along with the music.What is Alternator Noise?
Alternator noise is a high pitched whine created by the car’s electrical system. Measure voltages at battery, amplifiers and radio. Ground each amplifier independently.
2.e electromagnets). Induced noise through RCA’s:
When a wire has current through it, a magnetic field circles around it (i. If you have more that one amplifier and have noise only on one amplifier try switching RCA wires around
If you have tried everything , and still have that annoying noise, contact your nearest car stereo shop.
Avoiding this problem is very simple: DON’T run power and RCA wires together. Ground loops:
Your car’s electrical system (and your stereo) use the car metal chassis as a ground (there is always current flowing through your car’s metal parts). That is why you would hear alternator noise coming from mids and tweeters, but not subwoofers, since subwoofers only play low frequencies. If there are points in which they do have to cross, do the level best to place them perpendicular to each other.
If noise disappears, you know the problem is maybe RCA wires or grounds hooked up to crossovers/equalizers.
Troubleshooting
If you installed everything as described abpe and you still have noise, then try to troubleshoot what is causing the noise .9% of the time you will be wasting your money in buying noise filters. If the engine spins quicker, noise frequency is higher.
. Theoretically the car’s metal has no resistance, and it should not be an issue where you tie grounds for amplifiers, radio, battery and alternator. Conversely, if there is a magnetic field perpendicular to a wire, current will sheet metal welding welding be induced. Some stores may be hesitant to fix something they did not install. 99. They all should "look" like the same point, right? Well, the metal in your car does have resistance, and there is a potential difference from the front of the car, where the battery is to the middle of the car, where the radio is, and to the back of the car, where most amplifiers are. For example, if you have crossovers, equalizers, etc, bypass them by hooking RCA wires straight from the radio to the amplifier. First, recheck grounds at amplifiers, crossovers, radio, etc.
Don’t buy noise filter boxes unless you are sure that the head unit or equalizer are causing the noise. There should be very little difference between the measured voltages. If you have 2 or more amplifiers, DO NOT go from the ground terminal of one amp to the other and then from there to ground, most likely you will have noise. If you have your RCA wires from the radio or equalizer to the amp running in parallel to your power wires, an AC current will be induced and added to the sound signal. If noise stays the same, then problem is the amplifier, if it switches, noise is coming from previous components up the line. Use at least 10 Gauge wires for the grounds (and power). If there is a difference more than 1/2 volt, then you might have noise problems. Make sure AM/FM antenna has a good ground. The potential difference of the grounds makes the whole system act as an antenna, where they pick up noise. Shop around for a good store.
To solve this problem, make sure that the amplifiers have a good ground first. Run the power wire from the battery to the amp on one side of the car, and the RCA wires along the other side of the car. The sound signal travelling to the amp is a low voltage signal (in the mV range - thousands of a volt).
What causes alternator noise?
1. The induced signal will be amplified along with the music.What is Alternator Noise?
Alternator noise is a high pitched whine created by the car’s electrical system. Measure voltages at battery, amplifiers and radio. Ground each amplifier independently.
2.e electromagnets). Induced noise through RCA’s:
When a wire has current through it, a magnetic field circles around it (i. If you have more that one amplifier and have noise only on one amplifier try switching RCA wires around
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