Sub cone color

Has anyone noticed this color on their sub cones

Hi Jephsound,

That's a call to Bose. They will take care of you.

Call Bose® Product & Technical Support at (877) 335-2673
(U.S. and Canada only)
Monday-Friday: 9:00 AM - 9:00 PM ET

ST

I'm in Michigan,  only one of my subs has this issue..... I'm also having an issue w/ the F1 tops, upper magnet not holding, when trying to use in reverse J which I don't do all that often. 

Hi Jephsound,

I know that Bose will want to work with you on the spots and the magnet issues. Please call them. They are good people.

Call Bose® Product & Technical Support at (877) 335-2673
(U.S. and Canada only)
Monday-Friday: 9:00 AM - 9:00 PM ET

ST

Hi Jephsound,

this sub is new or used ?

New

may be rubber from 10" cones. it looks like pre-aged. Or residuals from packaging ?

it appears only on the grid ? or the drivers are damaged

It is actually on the cones themselves.  I don't want to take the cage off, I noticed when I sat side by side for for a show we were doing. Definitely a difference between one sub and the other. Still produces sound as to what extent if any, is sound degraded I have yet to check. I plan on giving Bose a call today as suggested earlier.