Quote from a fellow member
http://www.audioheritage.org/vbullet...ad.php?t=10252
"The T35 is not a very good tweeter. Most start taking a dive at about 10K Klipsch would select those that would make it to 15K and send the rest back. I have a pair tested in a anechoic chamber just makes it to 10k I replaced the diaphrams & now get 14k. Diaphrams are inconsistent due to phenolic weight and thickness. The newer T35/ k77 today will get 15k to 17k. This tweeter should have been retired along time ago."
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Maron Horonzak
The specs on that would not be as good as the 902, you would be better off leaving it alone.
The 902 should be fairly linear out to beyond 15K, but this thread:
http://www.audioheritage.org/vbullet...ad.php?t=14690
Will give you the full powers of Mr Zilch brought to focus on the lacking of the Altec HF horns, along with the assorted wisdom of many other members.
Part of the beauty of that speaker is the simplicity of a 2 way.
Many find the 902 a wonderfully acceptable driver, it is probably marginally better than the earlier versions.
Enjoy the road, it is not the destination that matters.
Nice job on those crossovers
Harry