Audio Operation
To switch on the speaker, press and hold the on/off button (2) until the status indicator (3) briefly lights up green.
To switch off the speaker, press and hold the on/off button (2) until the status indicator (3) goes out.
The speaker will switch off automatically after 20 minutes if no connection can be established via Bluetooth® or Multi-Speaker Sound during this time.
To adjust the volume, press the Volume up (5) or Volume down (7) buttons until the required volume is reached. When the speaker is switched on, the volume is always set to low.
The speaker has the following audio features:
- Playback of devices connected via Bluetooth® (set by default)
- Playback via Multi-Speaker Sound
- Transmission of the current playback via Bluetooth® or Multi-Speaker Sound to other devices with this feature
You can identify the current audio feature by looking at the status indicator (3):
- Blue: Playback of a Bluetooth® signal
- Light blue: Playback of a Multi-Speaker Stream
- Purple: Transmission of the current playback via Multi-Speaker Sound
When the speaker is switched on, playback via Bluetooth® is set by default. To switch from another audio feature to Bluetooth®, briefly press the Bluetooth® button (1).
- To establish a new connection: Start a search for a connection if no saved audio source is available or an available connection to an audio source via Bluetooth® needs to be ended and a new connection needs to be searched for. To do so, press and hold the Bluetooth® button (1) for longer than 0.5 s.
During the search, the status indicator (3) will quickly flash blue.
Activate the new connection via the external audio source. For smartphones, that is generally possible via the settings in the Bluetooth® menu. The speaker will appear as an available device under the name GPB 18V‑1 C xxxx. Please observe the operating instructions for your audio source/smartphone.
- To reconnect: If the speaker has already been connected to an external audio source (e.g. a smartphone) via Bluetooth® and if this audio source is available, a connection to this audio source will automatically be established. Whilst a connection is being established, the status indicator (3) will slowly flash blue.
If the saved audio source is unavailable, a search for a connection will start automatically after 2 min.
If the connection has been established successfully, a rising audio signal will sound and the status indicator (3) will light up blue continuously.
If the connection is interrupted or ended, a falling audio signal will sound. The speaker switches off automatically after a total of 20 min.
The audio source connected via Bluetooth® can also be controlled via the speaker:
- To change track to the previous or next track, press the Volume down button (7) or the Volume up button (5) for more than 0.5 s.
- To start, interrupt or continue playback, press the relevant playback/pause button (6).
To switch from another audio source to playback via Multi-Speaker Sound, briefly press the Multi-Speaker Sound button (4). During the search for a connection, the status indicator (3) will flash light blue. If the connection has been established successfully, a rising audio signal will sound and the status indicator will light up bright blue continuously.
The volume between the audio source and the speaker will be synchronised (the audio source determines the volume) until the volume is changed on the speaker. To restore the volume synchronisation, restart the connection via Multi-Speaker Sound. To do this, briefly press the Multi-Speaker Sound button (4).
If the connection is interrupted or ended, a falling audio signal will sound. The speaker switches off automatically after a total of 20 min.
If an audio source is played back via Bluetooth®, this playback can be forwarded to other devices with the Multi-Speaker Sound function (e.g. GPB 18VH‑6 SRC). To do this, press and hold the Multi-Speaker Sound button (4) for longer than 0.5 s. As confirmation, the status indicator (3) will light up purple and an audio signal will sound.
To end transmission via Multi-Speaker Sound, press and hold the Multi-Speaker Sound button (4) for longer than 0.5 s. As confirmation, an audio signal will sound.
The transmission via Multi-Speaker Sound is also terminated if the establishment of a new connection via Bluetooth® is started on the speaker.