How to tune the sound on a Xiaomi TV 32 inches: from bass to Dolby Audio

Why does the sound on Xiaomi TV 32 inches require a separate setup?

Xiaomi’s 32-inch TVs (Mi TV 4A 32, Mi TV 4S 32, Redmi Smart TV X 32, and others) feature built-in speakers ranging from 10 to 20 watts, but factory-made audio settings often fail to unlock their potential. Users face quieter sound when watching movies, insufficient bass when listening to music, or distorted sound at high volume. The reasons lie in standard audio profiles that are optimized for “medium” content rather than specific use cases.

In addition, the audio processing algorithms in Xiaomi TVs depend on the version of the MIUI TV firmware. For example, after 2023, Dolby Audio and DTS Virtual:X support appeared, but these functions are disabled by default. Without manual tuning, you lose up to 40% of the sound quality, especially when connecting external speakers or soundbars via HDMI ARC or Bluetooth.

In this article, we will discuss:

• 🔊 How to increase volume without distortion (including hidden settings of the engineering menu).
• 🎛️ Optimal equalizer parameters for movies, music and games.
• 🔌 Customization of sound when connecting external devices (soundbar, headphones, AV-receiver).
• ⚡ Solving typical problems: cracking, sound delay, lack of bass.

Basic Volume and Sound Profiles setting

Start by checking your current settings. You may have a problem with the wrong audio mode or system limitations. Open the TV menu by pressing the Settings button on the remote, then go to the section:

Settings → Sound → Sound mode

Standard profiles are available here:

• 🎬 Standard – Balanced sound for most scenarios (recommended for news and TV shows).
• 🎮 Gaming – High frequencies are enhanced to better perceive sound effects in games.
• 🎵 Music – focus on medium and low frequencies, but can “muffle” the voice in movies.
• 🎥 Cinema - imitation of surround sound, but requires additional equalizer adjustment.
• 🔇 Night mode – reduces dynamic range (the difference between quiet and loud sounds).

If the sound is too quiet even at maximum volume, check the volume limiter settings in the same section. Volume normalization (or AVL) automatically lowers volume when jumping — turn it off for maximum sound level. However, be careful: at high volume, speakers can distort sound, especially in models with less than 15 watts.

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If the sound is gone after the profile change, restart the TV by holding the power button on the remote for 5 seconds.

Thin equalizer tuning: bass, high and medium frequencies

The built-in equalizer in Xiaomi TV 32 allows you to adjust the sound in 5-7 frequency bands (depending on the model).

Settings → Sound → Equalizer

Recommended settings for different scenarios:

In models Xiaomi TV 2023-2026 (MIUI TV firmware 3.0+) is available extended equalizer with 7 bands and presets. To see them, hold the OK button on the remote in the equalizer menu for 3 seconds.

If the sound gets worse after the settings change (e.g., wheezing or echoing), reset the equalizer to factory values with the Reset button in the same menu. Also check if Dolby Audio mode is activated in Settings → Sound → Additional – it may conflict with manual equalizer settings.

Make sure the TV is not in energy saving mode"|Disable external speakers/earphones|Check for software updates (Settings) → On TV. → Update)|Reset the sound settings to factory (if previously experimented)-->

Adjusting sound when connecting external devices

If you are using Xiaomi TV 32 with soundbar, AV-So if you have a receiver or a headphone, the sound settings change:

1. Connection via HDMI ARC/eARC

To transmit sound to a soundbar or receiver via HDMI ARC (the port is usually signed on the back of the TV):

1. Connect the device with an HDMI High Speed cable (version 1.4 or higher).
2. From the TV menu, select: Settings → Sound → Digital Sound Output → HDMI ARC
3. Set the Auto or Passthrough sound format (for Dolby/DTS).
4. Turn on the HDMI Volume Control option to control the sound from the Xiaomi remote.

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Note: If the sound is late (not synchronized with the video), turn off the sound processing in the TV: Settings → Sound → Additional → Sound Processing → Off. In some models, this option is hidden – you need to turn on the developer mode to activate it (click 7 times on the Software version in the About TV section).

2. Connection via Bluetooth

For wireless headphones or speakers:

• 🔗 Activate Bluetooth on your TV: Settings → Devices → Bluetooth
• 🔍 Select your device from the list and confirm pairing.
• 🎧 In the sound settings set the output of sound → Bluetooth.

If the sound is interrupted or distorted:

• 📶 Reduce the distance between the TV and headphones (maximum 5 meters).
• 🔄 Switch the Bluetooth codec to SBC (Lower quality but stable: Settings → Sound. → Additionally. → Bluetooth codec
• 🔋 Check the charge of the headphones - at a level below 20%, interference may occur.

Solving Common Sound Problems

Even after setting up, users are faced with typical malfunctions.

1. No sound at all.

Check it out consistently.

• 🔌 Make sure the TV is not in Mute mode (button with speaker on the remote).
• 🔊 Check physical connections: If you use external speakers, turn them off and check the built-in speakers.
• 📺 Switch the signal source (e.g., from the HDMI1 on TV) — It is possible that there is a problem in a particular port.
• 🔄 Reset the sound settings: Settings → Sound. → Resetting the sound settings

2. Crackling or wheezing at high volume

Causes and solutions:

• 🔋 Speaker overload: Lower volume to 80% and check equalizer settings (reduce basses).
• 🔌 Poor contact in connectors: If you use external speakers, check the cables (especially 3.5 mm or more) RCA).
• 🔄 Software failure: restart the TV or reset the sound settings.
• 🛠️ Hardware malfunction: if cracking persists on all sources, contact the service (possibly damaged sound amplifier).

3. Sound delay (not synchronized with video)

Most often occurs when connected via Bluetooth or HDMI ARC.

• 🎵 For Bluetooth: use the aptX Low Latency codec (if supported) or connect the device via cable.
• 📺 For HDMI ARC: Turn off the TV’s audio processing (see section above) or turn on Game Mode (reduces latency).
• 🔧 In manual audio settings, find the option Sound Delay and set the value from -200 before +200 MS (select experimentally).

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If the audio delay only appears in a particular app (like YouTube or Netflix), the problem is on the service side.Try clearing the app's cache or reinstalling it.

Hidden sound settings in the engineering menu

For experienced users: in Xiaomi TV 32 have hidden sound parameters that can be changed through the engineering menu. ⚠️ Warning: Incorrect settings can lead to failures!

To open the engineering menu:

1. Turn on the TV and go to any channel or source.
2. On the remote, press sequentially (with intervals of 1 second): Menu → 1 → 1 → 4 → 7 → Menu
3. You'll open a tab menu. Choose Audio.

Useful parameters (change carefully!):

• 🔊 Speaker Volume Gain – loudness amplification of speakers (default value: 0, maximum: 15).
• 🎛️ Bass Boost – Low frequency amplification (recommended value: 3-5).
• 🔇 Mute ADC — Turning off noise reduction (set Disable for clean sound).
• 📡 HDMI Audio Delay – manual adjustment of sound delay HDMI (milliseconds).

After the changes, save the settings (Save button) and restart the TV. If the sound is lost or worsened, reset the engineering menu to the factory settings (Reset option in the same section).

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Before entering the engineering menu, take a picture of the current settings of each setting, which will help you to return everything back in case of an error.

Update the firmware to improve sound

The manufacturer regularly releases updates that optimize sound algorithms, for example, in the firmware MIUI TV 3.0.12 (2026) added support for Dolby Atmos for models Xiaomi TV A Pro 32 and improved processing of low frequencies.

To update the software:

1. Connect the TV to the Internet (via Wi-Fi or cable).
2. Go to: Settings → About TV → System Update
3. Click Check for updates.
4. If an update is found, confirm the installation and wait for the reboot (it will take 5-10 minutes).

If the automatic update does not work:

• 📥 Download the firmware for your model from the official Xiaomi website.
• 💾 Save the file (usually with the.zip extension) to the flash drive formatted into FAT32.
• 🔌 Connect the flash drive to USB-port of the TV and select the Update with USB refresher.

⚠️

Warning: Do not interrupt the upgrade process or turn the TV off the socket. If the indicator on the front flashes red, wait until it lights up green (usually 3-7 minutes), interruption can lead to a "brick" (inoperability) of the device.

FAQ: Frequent questions about the sound setting on Xiaomi TV 32