Yesterday I figured I'd play around with settings I don't usually mess with. One was voice off. I'm thinking I'm only turning off the voice alerts, not prompts. If you turn off voice, it removes it for prompts and alerts. By now, I know the difference in K/Ka tones, so I don't need the female voice "Ka Band" any longer. But I also like to change settings (K on or off) while driving down the road. Would be nice to kill voice alerts only. Not sure what benefit killing voice prompting would be.