for the first time ever I just popped the fuses on my 3.6r's. I just got them back from Magnepan where they were rebuilt and I am trying to break them in. No damage, just fuses needed to be replaced. Used Bel Canto Ref 1000 monoblocks, and the volume was absurd, but that's the first time it has happened. But, that said, I don't think the 1000 watts is overkill with the IIIa's. Great speakers.