I had 1.6s with highly modded xovers for a few years with no issues. Then I bought a pair of 3.5rs. I blew two tweeters in about six months. I decided it was time to move on.....
Ok ..I have Maggie 1.7is on Magnarisers but one keeps blowing the "tweeter"
It's definitely the (now left) speaker as I have swapped them around. Driven by very upgraded CJ PV10AL and Emotiva XPA-2 - which has plenty of power and current to drive them. The whole rig sounds so derful to me. However, when I play anything over about 80dB (as measured about 8 ft from speakers in center) and only about 11 o'clock on volume control the same tweeter ribbon section blows its fuse! Drives me nuts! Yes it's loud but it's not that loud. My retailer agrees. But I am trying to avoid sending it back to Magnepan - they haven't been helpful at all on phone - except to say amp should drive them easily.
Please don't recommend any new components. If you have nothing constructive don't bother replying.
Cheers
John