My suggestion would be to get a better h/u and better rear shelf speakers.

I think that the door speakers in the 1990 and later 300CEs may be some sort of subwoofers.

With a better h/u and better rear shelf speakers you would get better sound quality.

My stereo guy put in an Alpine 9857 h/u and upgraded the rear speakers. The 9857 is pretty good because you can add modules as you like, like XM or Sirius radio, iPod, even Bluetooth phone connection. It is all built in, you just add the right module/connection.

To be honest, I can't even hear my door speakers.

If you start cutting into the door to install speakers, you are already modifying the "stock" look of the car.

__________________
Current Benzes

1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"

Res non semper sunt quae esse videntur

My Gallery

Not in this weather!