Harman Kardon Luna

If you are having trouble with distortion or drop out, try the following suggestions:

Move the audio source closer to the speakers

Move the speakers closer to each other

Make sure the streaming speaker (host) only connects to one audio source, disconnect the Bluetooth connection between the streaming speaker (host) and other audio source

Make sure the audio source only connects with one streaming speaker (host), disconnect the Bluetooth connection between the audio source and other speakers

Restart both your speakers and the audio source

Make sure speakers are away from other sources of wireless signal – you could be experiencing interference

Re-pair the audio source with your speaker

If you’re streaming audio content from the internet, the issue could be with the internet connection and not your speaker

USB playback is available in US version only. After the USB drive is inserted, press and hold the "Play/Pause" & "Vol +" buttons for 10 seconds to start USB playback. Please note that there are no pause/next track/previous track controls for USB playback.

Wireless Stereo Boost allows you to connect two of the same model speakers together for a more powerful listening experience. 

To use this feature, hold the Bluetooth button on both speakers for more than 5 seconds.

The left & right channels can be swapped by tapping the Bluetooth button on the host speaker twice.