Some manufacturers use a type of Goop/non-hardening sealant material to make the speaker secure and also prevent air/sound from going around the speaker. In my past experience, the best I could do was using a small-wide screw driver and a firm putty knife, and went very slowly around the edge, prying only slightly each time I went around until I had pulled it far enough away from the sticky-stuff and to pull it out. This is not professional advice, just my experience. Hopefully it helps.
Any tricks to remove drivers from a (sticky) cabinet
im trying to remove my drivers but they’re still sticking on cabinet even all screws were off. Tricks, help?
My Sonus Faber has leatherette covered the front baffle…