I had to replace the pair in my Step SLE¹s, due to resonance in one. The
come in matched pairs. If you want to get another diaphragm for this driver
(identifying numbers are on reverse), you could make it a pair of good
tweeters for whatever project. Nice, clean and smooth tweeter.

http://cgi.ebay.com/ws/eBayISAPI.dll...87&ssPage Nam
e=STRK:MESE:IT

$9.99 starting bid

Steve