Mark IV question

[SeattleE38]

First of all, Hi! I just found your forums through bimmerboard, and love the resources that you have setup here.

I recently upgraded my 750il to the Mark IV navigation computer, with a 16:9 screen. Everything works great except one thing.

When the system (appears) to play sound notification for turns, etc, it comes through as only static. What would normally cause this?

The Mark IV is currently coded French, British, and German with 4-1/00 OS (latest). I'd like to leave it this way, preferably.

Any thoughts or ideas you have would be appreciated, as this is my first Nav system (my 96 doesnt have it).