The amplifier provides clean power to the tweeter which is the best protection!
Tweeters usually get fried from excess energy due to amplifier clipping.
It must be that when I recalibrate my AVR, it's set to high.
If you're using an AV receiver to power power-hungry B&W 800 Series speakers, set the crossover to "small speaker" and use the subwoofer for LFE to prevent amplifier clipping.