In my 987 Boxster's PCM/NAV system I "lost" the menu where one can set the volume of the NAV voice, choose the gender etc. Somehow I managed to tune the voice level down to a point where it is now merely whispering the instructions into my ear; definitely too faint to be understandable even though the instrument panel display helps. I know this menu exists somewhere but simply cannot find it anymore.

Looking through all the documentation I got, I can't find anything describing the NAV system settings in detail, only referrals to some extra documentation which I don't seem to have. Maybe I'm just really blind and am missing the obvious, in which case I would be dying from shame for putting the question up on this board and pestering the community.

I wondered if anyone with the same/similar generation NAV system could kindly point me to the above mentioned menu? Thanks much.