Audio advice, please

[The Dogfather]

I thought I'd ask on here as I know there's a few who are proper audiophiles. I've just had a upgrade to the Clubman's stereo buy a local company. I've have the following installed: -

Rainbow SAX 6.5" component front speakers, and a boxed JL 10" which are driven by a Focal 400W 3/4 channel amp which has been mounted in the wheel well. The system is amazing I can hear bits in song that I never knew where there :D. However certain songs at certain volumes cause the door panels to vibrate a bit, I've been told that fitting dynamat will help.

Has anyone had any success in reducing vibration using it and does it go on the door trim or the door itself?

[Scottie]

I've used dynamat also used brown bread got to say we preferred the brown bread and it's cheaper I think but maybe not so easy to get.

While there is no doubt it helped 95%, 5% of the problem still remained.