My Googling and Garmin manual searching aren't doing me any good. My GFC500 callouts at 1000 and 200 feet are pretty loud and I'd like to turn them down. I can't find where I would do that. I'm running the GFC500 through a pair of G5s. Is there something buried in the G5 options that does it? Is it only avionics shop controllable? These are the chimes that happen when you're within 1000 feet and 200 feet of the altitude preselect as you're climbing and descending. My 500 foot AGL callout (verbal) on an approach is the perfect volume.