Thanks for the suggestion. I think they're fine, I gave them a good listen today and they sound as good as ever. I was just very freaked out by putting that through them and assumed the worst.
I accidently removed a tube from my preamp while the system was powered up and sent a surge through my Magnepan 3.7i speakers, a fairly loud pop. I'm worried that I might have damaged the tweeter ribbons, I know they have a reputation for being fragile. Is it possible that they can be damaged...