CLK 350 / 500 audio system improvement
Here's what I've found so far: we're stuck with the lousy sound system. Since 2006, the sound system is wired using fiber optic cable, which suggests that each speaker is actually a speaker/amplifier unit. The speakers themselves are probably not replaceable...so we're stuck with the factory system. My gripe is that the overall sound has too much mid-range, not enough "top-end". Sounds harsh, shrill...not at all "hi fi".
Oh well.....I guess I'll live with it for the next 39 months!