Frequently Asked Questions
© Harman International Mark Levinson № 5909 FAQ rev02022022
CAN I STILL USE MY No 5909 HEADPHONES IF THE BATTERY IS DEAD?
Yes, if your № 5909 depletes the charge in the battery you can still listen to music content by using either the
1.25m or 4m, USB-C to 3.5mm proprietary audio cable.
Connect the 3.5mm end to your source devices headphone connection and the USB-C connection end to the USB-C
connection on the right ear cup of the № 5909. You will now be in a true passive operation mode with all
adjustments to volume and tone controls being performed on your source device.
CAN I ADJUST THE VOLUME OF THE ANNOUNCEMENTS AND CONFIRMATION TONES ON MY
№ 5909 HEADPHONES?
No, the volume level of the announcement voice and confirmation tones cannot be adjusted lower or higher. They
were set by the Mark Levinson engineering team to be the most appropriate levels to clearly hear them while
music or a phone call is in progress.



