Magnepan owners (and others) think very highly of that company’s current ribbon tweeter, used in the MG3.7i, 20.7, and 30.7. The long-discontinued Tympani T-IV and T-IVa also used an earlier incarnation of basically the same driver.
The Townshend Audio Super Tweeter---a pure aluminum genuine ribbon---sounds great (I heard it in use on top---physically and sonically ;-) ---of Magicos), electronics feeding it an ARC Anniversary Reference pre and VTL power amps), as does the NEO3 magnetic-planar tweeter from GR Research.
Way back in the 1970’s the RTR ESL tweeter was used in some of the great loudspeakers of the day (the ESS TranStatic, Infinity Servo-Static and 2000A, Wilson WAMM, and Fulton Model J), and still sounds pretty darn good.
The Townshend Audio Super Tweeter---a pure aluminum genuine ribbon---sounds great (I heard it in use on top---physically and sonically ;-) ---of Magicos), electronics feeding it an ARC Anniversary Reference pre and VTL power amps), as does the NEO3 magnetic-planar tweeter from GR Research.
Way back in the 1970’s the RTR ESL tweeter was used in some of the great loudspeakers of the day (the ESS TranStatic, Infinity Servo-Static and 2000A, Wilson WAMM, and Fulton Model J), and still sounds pretty darn good.