I found this on another forum and thought it would be useful here.JBL sells replacement rings for $1.90 each for the LE-25 tweeters. There are three versions of this tweeter (LE25, LE25-2, and LE25-4)and each has it's own ring.
The phone number for JBL Pro is 1-818-894-8850.
Part numbers are:
LE25 P/N 50402
LE25-2 P/N 53363
LE25-4 P/N 54297The tweeter model number is usually marked on the back of the magnet structure.
The LE25 series cone tweeters were used in the L-100, L-100A, 4310, 4311, and 4312A, and some others as well, although not all versions used the foam rings.
This site reported that some eBay vendors were selling these for as much as $25/pair.
Jerry
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Topic - Foam rings for JBL cone tweeters - Bold Eagle 07:43:01 04/26/07 (0)