Thank you ccotenj & warpdrv for your detailed reply.
None of the Salk speakers (Song Towers and HT2TLs) that participated in the SE WI Tower speaker GTG had the raal tweeters and the ss10 had a defective mid driver. That was a lot of bad luck in play at the GTG for Salk. Still the Song towers and HT2TLs shined. That's great.
IMHO, It would have been much fairer for all the speakers, if they were listening at little lesser volume at the GTG, as all the speakers were running without subs and all of them, I assume, were meant to be used with a sub.