Ok...So then the low bass in the cold is normal? I've done searches for this and haven't found anything. I have an 05
MCS (I too am an MoP customer - from Maine) with HK and have been wondering if the issue was speaker or amp related. Once the car is warm, the sound is normal.
Just a question for you...I checked out your site, but didn't read thru the whole HK speaker info. Did you have MoP fix your speaker rattle or did you take the car somewhere else (other than Tweeter) and have it fixed?