Help! What's the white glue coming from Celestion SL600SI

Your right, was it the much cheaper SL6 that was plastic?

http://www.hifirelics.com/starsky10%20pics%2012.28.13/Celestion%20DL6s%20Speakers-A.jpg

Cheers George

@shoubang  

Hint   @shoubang , it's only the 4 bigger screws not the 3 smaller inner screw that need to be removed. 
And when you screw them back, just a little nip tight or you'll crack the plastic mounting plate if your a gorilla and crank them down.

Cheers George     

Any misstep could easily ruin the speaker, I would think.

So long as your not a klutz, it will be fine, and you can reseal with more white silicon if needed.
And it’s only the sealing compound, not any capacitor electrolyte. The white stuff in the video shadorne posted is just white silicon fixing compound to stop things rattling around, and nothing to do with capacitor electrolyte leakage.

Cheers George

Just the sealing compound getting squeezed out, could have been after a very hot day which softened it? If it worries you, undo the tweeter or bass which ever one it's coming from and push it back.

Cheers George