There were at least 2 different versions of the Salk HT2-TL speakers, maybe 3. All of them used the same mid-woofers and cabinet design. The only difference was in the ribbon tweeters. The oldest had the rectangular looking Aurum Cantus tweeter, but I'm not sure if that was in the version with a TL cabinet. There was an older HT2 speaker in a non-TL cabinet. The bass in the HT2-TL cabinet sounds better. If you're looking at a used HT2 (not a HT2-TL), I'd pass on it, unless the price is really good.
Next came the circular LCY tweeter. It was very good, but, if I remember correctly, there were factory quality control problems. Salk couldn't get a regular supply of them. If you're looking at a used HT2-TL with an circular LCY tweeter, it's probably good. I can't remember if Salk used the LCY-110 or the LCY-130, but here's what they look like.
And finally came the present version with a RAAL tweeter.