Bud
An you explain a bit more why the tweeters and midrange drivers failed?
Would have Magico fixed under warranty if you were the original owner.
Does this mean Magico speakers do not play loud without failing?
How loud and how long did Magico say you can play them before they fail, especially as you indicated there was no distortion when you were listening?. These are supposed to be full range speakers.
Important questions for me at least, as I like to crank music and have never had this type of failure with my Vienna, Sonus Faber or Wilson speakers - my old small Naim speakers I burnt a couple of tweeters.
Take an SPL meter and try. According to Bud he was measuring in listening position 110db continually, that means he was hitting ~120 dB peaks . If you can even get that high with your set-up, watch what happen, and report (I don’t think your setup will play that loud, but put Lady Gaga on, crank up your preamp all the way and try).

P.S.
You may want to check your loudspeakers/amp warranty terms first...