Kenwood NX-5700 Mode D'emploi page 50

Switching the speaker audio output
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You can switch the audio output between the speaker of the transceiver and the
Bluetooth headset.
Press the key programmed as [Bluetooth Speaker] repeatedly to change the setting
("Off", "Only" or "Both(BT+Radio)").
Alternatively, press the key programmed as [Menu] to enter Bluetooth Speaker Mode
using the Menu Mode. Press the [J] and [K] keys to select "Off", "Only" or "Both(BT
+Radio)".
Off
Only
Both(BT+Radio)
Press the [ ] key to confirm your selection.
50
: Audio is output from the built-in speaker of the transceiver.
: Audio is output from the speaker of the Bluetooth device.
: Audio is output from both built-in speaker of the transceiver
and speaker of the Bluetooth device.