How to increase the volume of the speaker on Xiaomi Redmi 9A: safe and effective methods

Why Redmi 9A’s volume seems quiet and what to do about it

Owners of Xiaomi Redmi 9A often face the problem of insufficient volume of the built-in speaker. Even at maximum settings, sound can be barely heard in noisy rooms or when listening to music without headphones, the reasons for this are several: hardware limitations of the budget model, the software limits of MIUI or the banal pollution of the speaker.

It’s important to understand that increasing the volume beyond factory limits can cause sound distortion or even damage to the speaker. However, there are safe ways to optimize the sound without risking the device. In this article, we’ll look at both the standard Redmi 9A settings and the hidden features of the system that will help you get the most out of the built-in speaker.

Before you start setting up, check the obvious: whether the speaker is covered with a case, whether the holes are filled with dust, and whether the "Do Not Disturb" mode is activated. These simple things often cause apparent silence.

Method 1: Optimization of standard sound settings

Let's start with the simplest of things, checking and adjusting the basic sound parameters in MIUI, which many users miss out on when they go to radical methods.

Go to Settings → Sound and vibration. Here, pay attention to the following points:

• 🔊 Media volume - regulates the sound in applications (music, video, games) Make sure the slider is at maximum.
• 📞 Call volume - is set separately for incoming calls. Often users enlarge media, forgetting about calls.
• 🔔 Notification volume, which is responsible for the sounds of messages, can be muted by the system in power saving mode.
• 🎵 Equalizer - hidden in the settings of the music player, allows you to amplify low or high frequencies.

Pay special attention to the item "Adaptive sound" (if you have one in your version of MIUI), which automatically adjusts the volume to the surrounding environment. In some cases, it can artificially mute the sound - try to turn it off during the test.

💡

If the sound settings do not include the Equalizer option, install a third-party player (for example, Poweramp or VLC) – they have advanced sound settings.

Method 2: Use of the Engineering Menu (without root)

The engineering menu is a hidden settings section where you can fine-tune hardware settings, including the speaker, and on Redmi 9A, it is accessed through a special code.

Enter the following command in the "Phone" app:

##36446337##

After that, the Engineering Mode menu will open. Go to the Hardware Testing → Audio → LoudSpeaker Mode section.

Here you'll see a few sliders that are responsible for different frequency ranges. Don't push the values above 150-160 for the Redmi 9A, which can cause sound distortion or damage to the speaker.

• 🔹 Max Vol — 140-150 (increase the overall volume)
• 🔹 Min Vol - 0 (do not change)
• 🔹 Ring Vol - 130 (for calls)
• 🔹 Media Vol 140 (for music and video)

Check the current values before changing |

Don't lift sliders above 160|

Save the original settings (take a picture of the screen)|

Reboot your phone after the changes

-->

When you change your settings, be sure to test the sound on different types of content (calls, music, videos) and if you have wheezing or distortion, return the values 10-15 units below.

Yeah, I do a lot of tunes.|

I tried it once.|

No, I'm afraid to break something.|

I didn't know that was possible.-->

Method 3: Install third-party applications to amplify sound

If standard methods don't work, you can use specialized utilities, which work at the software level of sound processing, without affecting the hardware.

Top.-3 Proven applications for Redmi 9A:

Before installing any volume booster, be sure to check reviews for your phone model.Some apps may conflict with MIUI or cause the processor to overheat if used for extended periods.

⚠️ Note: Volume Booster applications often request permission to access notifications or special features. SMS — It can be dangerous for safety.

Method 4: Cleaning dynamics from dust and debris

One of the most common causes of silent sound is the banal pollution of the speaker. On the Redmi 9A, the audio output holes are located on the bottom of the device and easily clogged with dust, villi or particles from the pocket.

For cleaning, you will need:

• 🧹 Soft toothbrush (new, not used for its intended purpose)
• 💨 A compressed air canister (can be bought at an electronics store)
• 🔦 Lantern (for illumination of holes)
• 🧴 Alcohol wipes (for cleaning the body)

Carefully, without pressing, brush along the speaker's openings. Then, with short presses, blow the canister from a distance of 5-7 cm. Do not use metal objects - they can damage the speaker's grid.

After cleaning, test the sound. If the volume goes up, the pollution was the problem. If there's no change, go to other methods.

Method 5: Update firmware and reset settings

Sometimes the cause of quiet sound is software bugs in a particular version of MIUI. Xiaomi regularly releases updates where similar problems are fixed.

Check the relevance of your firmware:

1. Go to Settings → About the phone → System update
2. Click "Check Updates"
3. If a new version is available, install it.

If the update didn’t help, try resetting the sound settings to factory:

1. Open Settings → System and device → Resetting settings
2. Select "Resetting Sound Settings"
3. Confirm the action.

⚠️ WARNING: Full reset (Reset to factory) will delete all your data.Be sure to back up through Settings before this procedure → Additionally. → Backup and reset.

Once the audio settings are reset, the phone will return to the factory volume settings, which in some cases solves the problem of software-based sound restriction.

Method 6: Hardware modifications (for power users)

If all the software techniques have been tried and the sound is still quiet, you can consider hardware solutions, extreme measures that require disassembling the phone and potentially disqualify warranties.

Options for hardware sound amplification:

• 🔧 Replacement speaker - the original speaker for Redmi 9A (articular MDY-11-ES) near 300-500 More powerful analogues (for example, from Redmi Note) 8) They can increase the volume of the 20-30%.
• 🔊 Installation of external amplifiers - microchips-amplifiers (for example, PAM8403) You can strap a speaker into a chain. It requires rationing skills.
• 🛠️ Body modification: drilling additional holes to make sound better, a risky method that can lead to dust.

Before any hardware modifications, weigh the risks:

• Loss of warranty (if it is still valid)
• Possible damage to other components
• Deterioration of dust protection
• Risk of short circuit in soldering

💡

Hardware modifications are only justified if you are confident in your skills or willing to go to a professional wizard. For most users, software methods provide a sufficient volume boost.

Method 7: Alternative solutions for comfortable sound

If you can’t increase the volume, consider alternative ways to improve your sound perception:

• 🎧 Bluetooth speaker – even a budget model (for example, Xiaomi Mi Portable Bluetooth Speaker) will give you a Bluetooth speaker 3-5 More loud than the built-in speaker.
• 🔌 Wired headphones with microphone – many models have a built-in speaker for hands-free conversations, which is often louder than the main one.
• 📱 "Loud Communication" mode - when calling, use this function, it uses the main speaker at full power.
• 🔄 Sound redirection – some applications (such as SoundAbout) allow audio output to Bluetooth devices automatically.

For listening to music in noisy places, active noise-cancelling (ANC) headphones will be the best solution, even inexpensive models (such as the Redmi AirDots 3) are more efficient than the built-in speaker.

If you want to play loud without headphones, pay attention to portable speakers with support for Xiaomi HyperCharge – they can charge from your Redmi 9A through reverse wireless charging (if your model supports it).

FAQ: Frequent Volume Up questions on Redmi 9A