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| Frequently Asked Questions |
- My Zumo 450/550 volume is very low, and I have the volume settings at 100%
- I'm getting garbled audio, buzzing, or no sound from a Garmin 2730 with a Kennedy IsoSet, AuxSwitchSet, or AuxADSet interface
There is a master volume control on the Zumo that overrides all the volume settings in the menus. Press the bottom button on the left side of the zumo (the actual button, not on the touch screen). This will bring up a yellow bar-graph volume control. Then press the "+" button (again, the physical button - not the plus symbol on the screen) until all the bars are lit up yellow.
The audio jack needs to be set to "Headphone" mode, otherwise sound quality will be poor (might get a buzzing/feedback, or no audio, or garbled audio). To do this:Touch [Menu] button, then:
[Settings], [General], [Audio]
On the Audio screen, touch the down-pointing triangle at the bottom right to bring up additional choices
touch [Audio Jack]
Change setting to "Headphones" instead of "Line Out"