I am the one who spoke with tfabris about this problem, and it's driving me nuts! It wasn't that bad at first, but every day it is getting worse to the point that the subwoofer vibration generates the scratchy cracks and pops.
What I do to try to ameliorate this problem is pull the unit until it disengages the connector, then start pushing it little by little until I find a point in the connector contacts where the noise stops (diminishes); but each time it is getting harder and harder. I cannot hit any pits or bumps on the road, crank up the volume or even close the car door or it will make the noise.
So if anyone can share a solution to this problem I (and a few others) will greatly appreciate it.

Thanks,

Calvin