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How to Test for Leakage in Amplified Speakers and Effective Solutions to Reduce it

Having a crackling sound from your speakers detracts from the enjoyment of music. If you're trying to figure out why this is happening and how to fix it, we'll provide you with information about the source of this issue, techniques for testing, and solutions for addressing it. All of this is related to the electric signal sent from the amplifier to the speakers.

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23 September, 2023

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Symptoms of DC Leakage from Amplifier to Speaker

When there is DC leakage from the amplifier to the speaker, you may experience a loud humming sound when the amplifier is in use. Additionally, you may notice the deformation of the speaker cone, either pushed out or pushed in, along with no sound coming out of the speaker.

It is crucial to address this issue promptly, as it can lead to damage to the speaker. In some cases, the amplifier and speaker may come into contact with the circuit and even cause a fire, posing a risk to your safety and the safety of those around you.

Causes of Amplifier DC Leakage to Speaker

Amplifier DC leakage to the speaker is mainly caused by the malfunction of certain components on the power board, such as capacitors or blown fuses. This results in DC leakage in the speaker line.

As a result, the DC current from the power circuit is pushed out to the speaker line, causing a loud humming sound and eventual deformation of the speaker cone.

How to Check the Status of Amplifier DC Leakage

To determine whether there is amplifier DC leakage to the speaker, you can use two methods:

Method 1: Identify the issue based on the sound emitted by the speaker, such as a loud humming or no sound (accompanied by a deformed speaker cone).
Method 2: Use a voltmeter to measure the voltage parameters of the power supply to the speaker. This method provides a more accurate assessment but requires some knowledge of electronics.

How to Handle Amplifier DC Leakage to the Speaker

If you encounter amplifier DC leakage to the speaker, there are two methods for addressing the issue:

Method 1: Replace all the components on the power board. This is the quickest solution but can be expensive. It is important to choose and purchase genuine and suitable components to prevent further amplifier DC leakage to the speaker.
Method 2: Inspect and repair each component on the amplifier circuit board. This method takes more time and requires professional knowledge.

If you are unable to resolve the issue or feel unsure about handling the amplifier DC leakage to the speaker, it is advisable to take the device to a warranty center for repair or seek assistance from reputable repair service providers. This will help avoid exacerbating the problem.

I hope the above information has provided you with a better understanding of the causes, methods for checking, and effective solutions for addressing amplifier DC leakage to the speaker!