Hello everyone. I just bought an 05 C230 4dr Sport, and so far it is the best car Ive ever owned. I have the indash CD, and a 6disc Cd changer in the glove box. There is a triangular speaker grill on the dash, tweeters in the front doors, speakers in all 4 drs, and what appear to be 2 speaker grills in the rear deck.

Quick question...

How do I know if I have the Harman Kardon system? If so, how are the speakers actually laid out?

 

It will say it on the rear speaker grill. To be honest there is not that much of a differance comparing the HK to the other system used. I think the only differance is the sound settings as the HK has a surround sound mode and speech mode other then that not much of a differance in my opinion.