Hello all - I recently bought a pair of McIntosh XL10 loudspeakers from a seller in Gloucester, MA for $75. the 8" woofer/mid and 10" passive radiator refoam kits have been ordered, but there is a soft grey foam surrounding the woofer/mid and the radiator, and also covering the radiator diaphragm. For a pic of this speaker click http://www.roger-russell.com/speakers2.htm#xl10

Anybody know if this grey foam is important, and where I can get it and/or new passive radiator diaphragms?

thanks!
-isaac