BMW R1200RT/R1250RT Forum

The manual says it will do this with Bluetooth connected but as far as I am aware I don't have any connected. It does this with the navigator in or out. If you're using the BMW Bluetooth, it turns off the speakers (and you also lose the volume control and S-Level feature).  You're MUCH bet...

This is a mod to replace the bike's built-in bluetooth and open up some of the bike's features that don't currently work with bluetooth connections....1)  a 'speaker level to line level converter' that converts the voltage and impedance of the Alpine unit's speaker outputs so they can be u...