Diff. between Soliloquy "i" series and older type

I believe the "i" series had a waveguide on the tweeter.

I'm not sure whether it corresponded exactly with the addition of the "i" designation but earlier versions of the SAT 5 and the 5.3 had soft-dome tweeters and the "i" versions had aluminum tweeters. I don't know about differences in the construction or crossovers.

Aluminum tweeters ? I was not aware that Soliloquy used metal tweeters .
My 6.2i's had soft dome tweeters .
Very nice speakers for the money .

Yes, I don't know about the 6.2i's but the later 5's definitely had aluminum tweeters. I just had to replace a bad tweeter in my SAT 5's and the only ones still available were the aluminum ones.

Where did you get the replacement tweeters from?