Whining Noise From Speakers When Accelerating [CAUSES & SOLUTIONS]

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How do I stop my engine from whining through my speakers?

Eliminate whining noise from speakers when accelerating by isolating the problem, testing the components of your car’s stereo, use a ground loop filter noise isolator or RCA noise filter.

When an aftermarket radio or amp is fitted in a car, engine noise in the vehicle’s stereo speakers is a fairly common problem. The noise is most commonly described as a whining sound that becomes louder as the engine’s RPMs are increased. In this post, we will go through the different causes of whining noise from speakers when accelerating and how to fix them.

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Things You Will Need To Fix the Problem

  • Digital multimeter
  • RCA Noise Filter
  • Ground Loop Noise Isolator

The problem may be with the wiring or component connectors

The first step is to pinpoint the source of the issue. Check your stereo’s earth/ground wire first, then all other wires connected to the automobile sound system. This encompasses the alternator ground, the alternator-to-battery connection, and speaker cables. If the whine persists, double-check the connectors on all of the other components.

The no-cost, low-cost technique of locating the stereo’s whining is troubleshooting defective ground connections. If this approach does not eliminate the whine, use a multimeter to check each component separately.

The components of your car’s stereo may have malfunctioned

Set the multimeter to 12 volts DC and attach the +ve and -ve terminals to the power and earth connections, respectively. Carry out the same procedure for each component of your car radio. If the difference is more than half a volt, the ground wire needs to be tightened or relocated.
This refers to all of your stereo components’ ground cables. The most effective technique to locate any voltage differences and eradicate the whine is to use a multimeter.

Use ground loop filter noise isolator

Place a ground loop filter noise isolator on the power connections between the battery and the stereo head unit if none of the other methods solve the problem. This should eliminate the whining sounds, but make sure you check the rest of the audio components as well.

Use RCA noise filter

If the whining persists after you’ve installed the audio noise filter, it’s most likely a high-frequency noise passing along the RCA connections to your amplifier. This noise can be removed by using an RCA noise filter.

Your antenna may be at fault

The antenna, an often-overlooked part of your stereo, can also be a weak spot in your car’s audio system. Ensure your antenna is secure and grounded properly when you’re checking the rest of your system.

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