Please pay attention to the following when using the speaker: 1. After installing the speaker, the aircraft's power performance will be affected. Please pay attention to flight safety. 2. Use the standard remote controller to play human voices for optimal playback effect. It is not recommended to play single-frequency sounds to avoid irreversible damage to the speaker. 3. DO NOT use the speaker near people or in an urban area where noise-sensitive structures are concentrated, as the loudness could lead to accidents or injuries.