Mirage M1 or M3 vs M1Si or M3Si Series


I'm the recent proud owner of a set of well acred for original M1's but curious to know from, MxSi owners what the differences are sonically between these 2 fine sets of Audio design and manufacturing prowess.
jgwilson
Actually, the si versions are much better.The tweeter and mids are where the improvement occured. A lot of fussing re. placement pays off.If you have the manual, their recommendations are spot on. 10years ago when a friend and I had similar (he had plain 1s;I had 3sis)we both had almost the same gear and ics. He was always jealous. Your old style can not be upgraded to si status.
also the crossover for the Si was biwire capable the original didn't have this feature
Humm, not sure on these replies, let me reiterate, I am not sure. I was 'told', way back when, it was just a tweeter change. Furthermore, I owned a pair of M3 speakers, not si versions, and they were biwire speakers.