rear subwoofer upgrade
You are lucky, I have two 12's, and something in the back of my car is rattling like hell even at low volume. When I find the time, I am going to tear the thing apart and get to the source of it.
) the sunshade, and i bet the noise will go away... also, there can also be rattles coming from your license plate frame, but that is something you might not hear in the car... i did what Bruce mentioned, use some double sided tape to secure the frame to the actual plate. that eliminates the rattle from that.
When I had my CLK, I replaced the speakers with Focal Utopias... they sounded INCREDIBLE. Sub duties were handled by two Focal 10s... our biggest problem was rattling and vibration. The CLK definitely was not a paradigm of build strength! We had to dynamat most of the car to quiet it down. The benefit was the elimination of rattles and resonances (which I experienced even with the stock Bose system.)
FOCAL
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