higher bass freq, I can hear a buzzing/rattle in the passanger side door area. I cant really locate the exact place where the buzzing is since its around the door panel/ airbag/ glove compartment area. any tips on stopping buzzing?

 

You need to isolate the location of the "buzz". Once you determine the exact cause of the buzz eliminateing it is normally simple.

 

its weird, I only hear this buzz only in one song so its strange. I ran a few bass frequency testers that go through all the cycles and I cant duplicate it.

 

The tones on your bass CD are likely pure tones. it is easier to hear distortion and to adjust EQ's and other attributes of the system with the bass CD. But for this sound if it only shows up during one particular CD track use that track to isolate the source of the "buzz". Set it to repeat and listen in your driveway.

 

I agree with jmax's advice. If you still can't find it, it may help to take off the door panel and try listening with it off. If you can still hear it, then not only can you elimiate the panel itself, but you can start prodding around the door surface/cavity to help isolate it.

If it helps any, the good news is that you can only hear it on one song. I think even the best (well, almost the best) vibration-damped system will rattle or buzz every once in a while. Problem is, it may get worse over time.

Tony