Yesterday, I passed two waypoints sereral times and no alarm was given. Both Waypoints had names and "Announce WP-Name" was checked. WP alarm proximity was set to 80 m and I passed through the WP in < 5 m distance. Volume was set to maximum.
Also, I feel there are too many options for waypoint alarms, which is confusing and error-prone. The options for WP alarms should also be in the WP settings, not only in the sound settings.