It looks like you are visiting outside the United States of America. Please visit your local website.
Please try the following solutions:
1) Restart the speakers and reconnect the audio source.
2) Turn up the volume
3) Make sure the audio input is set correctly
4) Check if there is a signal from your audio source
Please try the following solutions:
1) Make sure Bluetooth is enabled
2) Move your device closer and retry the connection
3) Try another Bluetooth device for connection
Please try the following solutions:
1) Make sure both the power and the wall outlet are on.
2) Restart the Edifier bookshelf speakers and reconnect the audio source.