Thanks for the link; it reinforced some things that I found when experimenting with multiple speaker arrays...Right now my mind keeps switching preference between the r6 meta Kef and the svs ultra evolution... (I don't know if the diamond coating on the svs dome tweeters is enough of a difference to cause me "listener fatigue") I do know that the Polk ring tweeters seem to be a down check though, for me; apparently because I have odd hearing...
Since Memorial day is coming up I'll likely wait for potential sales then pull the trigger for an in home trial of at least the Ultra Evolution center (I'm also curious about the diamond coated tweeter).
I found the biggest noticeably re; horizontal/vertical (driver arrays)/sound lobes was when the observer moves (turning their head with horizontal lobes or rising/sitting/jumping up and down for vertical lobes... since vertical movement is relatively rare, for me, when listening, I decided to, mostly, ignore it.
My experiences with ribbon tweeters was mostly with the 1970's air motion transformers; where I noticed that dust and occasionally ribbon blow outs (at extreme volumes) were, occasional (rare) issues...(40 years ago)...
I do like the high frequency performance of ribbon tweeters though.... Hopefully the problems have been rectified or at least alleviated over the last 40 years... (I have been watching for ribbon driver sales over the last few months; for potential use in my next speaker experiment)...
Enjoy!
