How do you remove the dash speakers on a 1994 w140 S500?

While I'm at it I am also thinking I have to replace the passenger front door speakers also.

When faded and balanced to the front passenger side all I get is sound from the tiny speaker behind the mirror.

Any special tools etc? I don't want to just go at the dash grills and then find after I break one that there is a special clip or trick etc.