How to fix auto volume changes on a Samsung QLED TV

Why does my Samsung QLED TV keep changing the volume automatically?

Discover how to stop your Samsung QLED TV from adjusting volume automatically due to the Sound Sensor or Intelligent Mode settings. Learn how to disable Active Voice Amplifier or Adaptive Sound+ for a consistent audio experience.

If your Samsung QLED TV is unexpectedly increasing or decreasing the volume on its own, it is likely due to the Sound Sensor or Intelligent Mode features such as Active Voice Amplifier and Adaptive Sound+. These features are designed to enhance audio clarity by adjusting the volume based on ambient noise levels and content type. To resolve this behavior, you can either turn off the Sound Sensor or disable specific audio enhancement options in the settings.

1. What causes automatic volume changes on Samsung QLED TVs?

Automatic volume adjustments on Samsung QLED TVs are typically triggered by the following features:

- Sound Sensor: Detects ambient noise levels to optimize audio output through features like Active Voice Amplifier and Adaptive Sound+.

- Active Voice Amplifier: Enhances speech clarity by adjusting the volume based on background noise.

- Adaptive Sound+: Dynamically adjusts sound quality based on the content being played and the room acoustics.

2. How to stop automatic volume changes on your Samsung QLED TV

Method 1: Turn off the Sound Sensor

The Sound Sensor can be toggled on or off using a physical switch located at the bottom of the TV. Here's how to disable it:

1. Ensure your Samsung QLED TV is powered on.
2. Locate the Sound Sensor switch at the bottom of the TV. Note that the position and design of the switch may vary depending on your model.
3. Press the switch to the right to turn off the Sound Sensor. A confirmation message will appear on the screen.

Note: Disabling the Sound Sensor will also turn off Active Voice Amplifier and Adaptive Sound+.

Method 2: Disable Active Voice Amplifier and Adaptive Sound+

If you prefer to keep the Sound Sensor enabled but want to stop automatic volume adjustments, you can disable these features individually:

1. Press the Home button on your remote control.
2. Navigate to Settings (gear icon).
3. Select General and then Intelligent Mode Settings.
4. Choose Intelligent Mode to turn off all features or select individual options to disable Active Voice Amplifier and Adaptive Sound+.

Note: Active Voice Amplifier is disabled by default in most models.

3. Supported Samsung QLED TV models

The Sound Sensor and related features are available on select Samsung QLED TV models, including:

- 2020 QLED 4K models (excluding Q60 series)

- 2020 QLED 8K models

- Newer models such as the Galaxy S24, Galaxy S25, and Galaxy S26 series-compatible smart TVs

4. Additional things to check

If the issue persists after disabling the Sound Sensor or audio features, consider the following:

- Ensure your TV software is up to date by navigating to Settings > Support > Software Update.

- Check for external devices (e.g., soundbars or streaming sticks) that might interfere with audio settings.

- Restart your TV by holding the power button for 10 seconds or using the remote control.

Related Samsung support topics

- How to update software on Samsung QLED TVs

- How to connect external audio devices to Samsung TVs

- Troubleshooting audio issues on Samsung smart TVs