Fixing a dent in a whoffer cone

Another alternative is to "french kiss" the cone. Not just another way to get close to your system, but by gently sucking while puckering your lips against the cone you can work it back out.
Just don't let your spouse catch you doing it. She will undoubtedly grow jealous and never let you have private listening sessions alone anymore.

Fotis_k, you are kidding right ?? But come to think about it, that just might work ... I am just having a hell of a time imagining someone on his/her knees puckering up to the woofers ...

ROTFLMAO

Dont try what Fotis says with electrostats, ,y lips are still healing :)

I fixed my woofer with the dust cap pushed in with a very fine metal scribe. Gently push the scribe into the dust cap from the side and gently pull until it pops out. You may have to do this from more than one position on the dust cap. And, yes, a pushed in dust cap does not affect the sound.

I once used the wine tool which lets you reseal your wine with a vacuum. It worked, but the "kiss" idea is the same principle. And y'all are correct in that it's just a dust cover and does not effect the sound.