The esotar's waterfall! Check with Merlin on these--the Khorus' motive here is pure profit...the esotar limits the number they make every year (ask them) They cost a fortune and cannot be used except in the most expensive speakers--or those who limit their profits. How Merlin can afford them? Dunno...perhaps, as noted in all the reviews, the designer's background includes materials engineering and he has been able to make stiff (ever knock your knuckes on a Merlin? You'll break your hand) enclosures without expensive woods. (Though I love the look of their painted ones--they cost a lot more) I had three speakers with esotars, and loved them, and have always stayed away from titanium tweeters since my Totems, a very good speaker with a reputation for sweet sounding titaniums...BUT still metallic sound compared to
ANY silk, cloth tweeters. BTW, my top two speakers I've owned include the Guarneris and Merlins. Each blows away my dealers Khorus'--in fact, the dealer explicitly told me that when I said I liked the Khorus' but not as much as Merlins by a good margin "Of course, they don't sound as good as the Merlins." The dealer is a friend and often tells me things he wouldn't tell all customers, but cannot get the franchise for Merlin because there is another dealer selling them 25 miles away. George Cardas...ask him about esotar tweeters. He uses them in his studio! In his Merlins, of course.