For Nebula projector with Android TV-operating system, if you feel the sound from your projector's built-in speaker is poor, try the following steps:

1. Play different videos in multiple installed streaming apps;
2. Update your projector to the latest firmware by going to Settings > Device Preferences > About > System Update;
3. Reset your projector by selecting Settings > Device Preferences > Reset and try the built-in speaker again.

If you are still encountering the issue, contact us and provide the following information to help you find a solution faster:

1. Your Nebula's current firmware version. You can check this by going to Settings > Device Preferences > About > Firmware Version;
2. A short video showing the poor sound issue.