In my experience, speakers blow up from too little power, not too much: when your 80wpc solid-state amp is turned up louder than it can handle, it delivers a clipped waveform with more than its rated power and it is that distorted signal which blows out the tweeters. I had the 603S2's in my house for awhile, driven with a 75wpc amp, and I was impressed by how smooth they sounded, how clean they were at high volumes, but I also wanted to turn them up louder--my amp had clip indicator lights so I knew exactly how high I could turn them up. I ended up with B&W CDM7NT speakers and after about half a year their initial brightness had tamed. I also gave them a B&K 200wpc power amp and that helped everything, top to bottom. The B&K is noted for its "dark" sound which I think helped tame the brightness. Toeing them out a little, so you aren't listening right on the tweeter axis, might also help reduce the brightness. Suggest you consider a more powerful amplifier--200w would not be too much--don't worry about the "power rating" of the speaker--and get an amp with some kind of clip indicator so you won't be wondering. Regardless of the speaker, I think you will appreciate that feature given your listening preference which sounds like mine. That's what I had to do to stop blowing out tweeters (years before the B&W's entered the picture) and that amp lasted a long time. Wish my B&K had the same feature--now I'm back to wondering but so far haven't blown anything up. Good luck