C63 AMG - Speaker sound/setting & trunk vibration
I am using my audio almost 90% connected via Bluetooth on Harmon Kardon Premium Audio system. Now, at times, I am getting very stat-icky high pitch "unpleasant" sound coming out from the speaker when the volume is too loud or set on BOOST instead of normal. Also, at times, my trunk vibrates due to the bass and etc. Other than just lowering the volume and the boost mode to normal, what have you guys done? Or am I the only one who's experiencing this on my supposedly premium speakers? My other cars do not make any of these cheap sound when even the volume is raised high. Thanks for all your inputs.
You could test out what's wrong by pressing all around the trunk and see if the issue is still there, like a loose screw or plastic piece. Then press on the speaker and see if the noise/vibrations stop. Your speaker could just be going out and needs to be replaced.




Now, I did notice vibration coming from the back when ALL speakers were turned on higher volume and more bass. I guess somewhere in the trunk. Tried to put my hands on the plastic covers on the back of the speakers and didn't help. I guess i will do some more research and see what I can do. Thanks.





