Owners of modern Xiaomi equipment often face a situation when, after connecting external audio devices or peripherals, the sound begins to distort, crack or emit strange magnetic hums. This phenomenon is especially characteristic of Mi TVs and Redmi TVs, as well as some smartphone models when using specific accessories. Users are looking for a way to turn off the Xiaomi speaker area, meaning by this the elimination of software conflicts or physical interference that interfere with the normal operation of the audio system.
The problem is not always hardware failure, but the interaction of Bluetooth protocols, electromagnetic fields and settings of the Android TV or MIUI operating system. When a device tries to simultaneously transmit a signal to the built-in speaker and external acoustics, there is desynchronization, perceived as noise. Correct setting allows you to redirect the audio stream and eliminate this effect. In some cases, you need to completely disable the internal playback modules to free up the communication channel for the quality of external speakers or soundbars.
In this guide, we will look at all the available methods of solving a problem, from simple settings on the menu to the use of engineering codes and physical shielding. You will learn why this noise occurs and how to permanently eliminate the discomfort when watching movies or listening to music. A systematic approach to diagnosis will help identify the source of the interference in your particular case.
The nature of interference and the “dynamism area”
The term speaker area in the context of Xiaomi technology is often used by users to describe the electromagnetic zone or program area of responsibility of the audio output. In fact, it is a resource conflict: When a TV or smartphone is connected to a Bluetooth headset, but the sound continues to go through the built-in speakers, the system creates a double load on the audio processor, which leads to the emergence of artifacts that users mistakenly take to "turn off the area."
The physical nature of interference is often related to magnetic fields. There are powerful magnets in the vicinity of the speakers that can affect other components, such as the Wi-Fi antenna or the remote sensors. If you notice that when you increase the volume, you start to malfunction the network or you see bands on the screen, then electromagnetic interference has reached a critical level. In such cases, software shutdown is not always effective, and you need to change the physical location of the devices.
⚠️ Warning: The constant presence of a strong hum or crack at high volume may indicate a breakdown in insulation or failure of the capacitors in the amplifier power supply chain.
Another reason is that the audio codec drivers are not working properly, and the operating system may misidentify the type of device it's connected to, considering it to be part of the internal system rather than an external accessory, and as a result, sound processing algorithms (DSPs) are used twice, first for the internal path, then for the external one, which creates echoes and metallic sound that irritates the ear. Understanding the mechanism of the error is the first step to fixing it.
Software switching of audio output in settings
The safest and most efficient way to resolve a conflict is to manually redirect the audio stream. In the Android TV interface used in Xiaomi TVs, a separate settings section is responsible for this, you need to force the system to specify that the main playback device is an external source, thereby “disabling” the priority of the internal speaker area.
To do this, go to the main menu and select the settings section, often designated by the gear. Find Sound or Display & Sound. Inside this menu, you are interested in Audio Drive or Digital Output. Here, the system will suggest choosing between built-in speakers, optical output or Bluetooth. Selecting any external option automatically deactivates the internal gain circuit, eliminating interference.
- 🔊 Open the sound settings through the main menu of the TV or smartphone.
- 📡 Find the Audio output option and select Optical output or Bluetooth».
- 🔇 Make sure that the “Dynamics TV” option is translated to the “Off” or “Disabled” position».
- ✅ Restart the device to apply changes.
Importantly, the names of items may vary from one version of MIUI for TV firmware to another. If you don't find an explicit switch, try changing the format of the output to PCM instead of Auto or Pass-through. This forces the processor to decode the sound itself and transmit the signal already ready, bypassing the complex processing chains that often cause crashes. The PCM format is the most compatible and stable for most external speakers.
☑️ Checking the sound settings
Use of Engineering Menu and ADB Teams
For advanced users who have not been helped by standard settings, there is access to hidden system functions through ADB (Android Debug Bridge) debugging, which allows you to directly interact with system audio services and force you to turn off certain audio channels. Using ADB requires you to turn on the developer mode, which can cancel the warranty if you carelessly handle it.
First, activate the developer mode. Go to Settings → About TV (or About device). Find the build number and quickly click on it with the remote 7-10 times. The system will tell you that you have become a developer. Then a new option will appear in the settings menu for developers. Enable the option debugging over USB (or ADB Debugging).
Now connect your computer and TV to the same Wi-Fi network. Install your Android package on your computer. SDK Platform Tools. Open the command line and type in IP-address of your TV to connect:
adb connect 192.168.1.XXAfter a successful connection, you can try to reset the audio service, which often solves the problem of the hung "speaker area":
adb shell am force-stop com.android.soundrecorderadb shell service call media.player 1⚠️ Note: Introduce the wrong commands into ADB This can cause a system to be unstable or a cyclical reboot. Write down all the steps so that you can return to the original state if necessary.
There is also a special engineering code that can be entered directly from the remote into the application search box or in a special section (depending on the model): ##6484##. Once in the engineering menu, select the Speaker test and try to run a test. If the test mode is clean, then the problem is software. If the noise persists, there is likely a hardware malfunction. Some versions of the menu allow you to forcefully silence one of the channels, but this function is hidden from the average user.
List of useful ADB commands for sound
Physical Causes and Screening
If software methods fail, physical factors are worth considering. The speaker area can cause interference due to the proximity of power supplies or wireless routers. The magnetic field generated by speakers, especially low-frequency (subwoofers), is able to direct currents in nearby cables, creating a characteristic hum.
If it’s directly on a Xiaomi TV or in close proximity (less than 30cm) to the built-in speakers, try moving it. Wi-Fi signal and sound work at different frequencies, but powerful transmitters can create intermodulation distortions in the TV’s poorly shielded circuits.
- 📶 Move your Wi-Fi router at least 1 meter away from your TV or sound system.
- 🔌 Use the cables. HDMI audio with high-quality screening (double screen, ferrite rings).
- 🔋 Disconnect from the network unnecessary power supplies located near the audio equipment.
- 🧲 Remove magnetic phone holders or other magnets from the back of the TV.
Also note the cables. Cheap HDMI cables without ferrite filters (thickenings at the ends of the cable) often act as antennas, catching tips from speakers. Replacing the cable with Ethernet-enabled High Speed certified cable can completely remove background noise. The quality of the cable plays a critical role in digital audio transmission systems.
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Use ferrite filter rings on power cables and HDMI. They are inexpensive and put on the cable as a latch, effectively suppressing high-frequency interference, which is often mistaken for speaker noise.
Comparison of methods for eliminating interference
To make it easier for you to choose the right method, we have systematized the ways to solve the problem depending on the symptoms and skills required. Not all methods are universal: what helped one user with the Mi TV 4S model may not be suitable for the Redmi Smart TV X.
| Method of decision | Difficulty | Efficiency | Risks. |
|---|---|---|---|
| Switching the audio output to the menu | Low. | High (for Bluetooth/Optics) | Absent. |
| Resetting the sound settings | Low. | Medium | Resetting user equalizers |
| Using ADB teams | Tall. | High (for software bugs) | System instability |
| Physical shielding | Medium | Depends on the cause. | Loss of warranty at autopsy |
As you can see from the table, you always start with software settings, they're safe and reversible. ADB commands are powerful tools, but you need to be careful. Physical methods are worth using if you're sure that the problem is not the software, but the tips or the bad cable.
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90% of Xiaomi audio problems are solved by switching the output format to PCM or reconnecting the Bluetooth device again.
Frequent questions and troubleshooting
Even after completing all the steps, nuances can arise. Often users forget that some apps (such as YouTube or Netflix) have their own audio settings that can override the system, and it’s also worth checking whether the feature “Sound Improvement” or “Adaptive Sound” is included, which on Xiaomi’s budget models often work incorrectly and create artifacts.
If the sound is gone completely after trying to turn off the speaker area, check if a non-existent device is selected as the output device. Go back to the audio settings and select Dynamics TV back. If that doesn't work, you may need to completely reset the system to Factory Reset. Remember, this will delete all your data and installed applications.
⚠️ Attention: Before a complete reset, make sure the problem is not with the remote control. Settled batteries in the remote control can cause you to be unable to control the volume, creating the illusion of a sound breakdown.
In rare cases, the problem is with a particular firmware version. Go to About TV → System Update and check for new versions. Xiaomi engineers regularly release patches that fix audio drivers errors. If you have a beta version of the software, consider rolling back to a stable branch.