KEF Q30 Woofer Surround question


I was told by a speaker technician that the woofers in these speakers have plastic surrounds.
(The drivers are 6 1/2 "....co-axuals)
When I pressed the surrounds, they felt like soft rubber. Does anyone know if this is true information ?
Also I was told these drivers have problems if the surrounds are plastic.
Any info regarding this too?
thank you
rocky1313
He’s most likely incorrect. I wonder if he could have meant the cosmetic ring around them?

Unless you are fixing them, does it matter?

Go by what you can hear and their relative price, unless you are buying for commercial use the tech is irrelevant to how much money you should put out for them.