Reduce output volume on shutdown Running Mojave 10.14.6. I'd like to alter my output volume upon shutdown, so that it when it starts it's always at the same volume (20%). This would make the "DAHHH!" sound more pleasant, but it's also so that app sounds present in a consistent and predictable way.

I couldn't understand how to run a script upon regular shutdown trigger (complicated) but I made an AppleScript to change volume and then shutdown, i.e. to replace the regular shutdown trigger:

set volume output volume 20
tell application "Finder" to shut down


I saved that as an app and it seemed to work great until I realised it was reopening upon login every time, thus shutting the machine down again! I booted in safe mode to clear the open apps and breathed a huge sigh of relief.

Does anyone have any suggestions on how to achieve my goal? I don't really want to disable the "dahhh!" because it's useful for troubleshooting. I'd like the regular app sounds to start at a consistent volume by default. I literally just want to "reset" the volume to 20% every time I turn off.

Thanks in advance for any ideas.
You can use Power Manager to do this. An included Set volume at log out task will do what you want. Logging out is part of the shut down process.



I work on Power Manager, so feel free to ask technical questions about how it works in the comments.