Thinking about replacing the dashboard tweeters in my base 940. Anyone know where the crossover point is for them and how to get those speaker grills off without damaging them?

 

Removing the grille is easy, pop off the plastic bezel closest to you and then with a small screwdriver or pick, pop up the rivets that hold it into the dashcap. The entire speaker assembly will now come out.

Now for the hard part, the tweeters are hard wired to the stereo and the door speakers run through the amplifier, and the twain shall never meet.

If you are replacing the headunit, then it is no problem, just trace the wires. I installed CerwinVega 3" tweeters in my car (after cuttiing out the old tweeters) but also had to cut into the vent duct directly below it to create enough space. If you try a direct replacement, the impedence of the speakers will not be matched to the stereo, IIRC they are 8ohm speakers and most modern speakers are 4ohms.

I have a set of known-good tweeters, PM if you'd like to buy them