Many thanks for the current default for the audio level. - 1 pair of speakers is damaged and 2 headphone were overloaded til I got the chance to reduce the level.
It seems that with one of the last updates for Fedora 35 lost the audio settings and the defaults are assigned unexpected.
The default for the audio level should be set to a low value. This can be to low for notebook spearkes but is fine for headphone or external devices in most cases. To low is better as to high. As I already told: 1 pair of my loud speakers were overloaded and damged!!