B&W 805D

I couldn't find a 805D on the website. Found the 805S but that doesn't have the diamond tweeter.

I would be worried that they would be too fatiguing to listen to...I guess if you had "warm" equipment it wouldn't be too bad, but you would have to be careful. I have heard all of the diamond speakers and they seem pretty balanced, but once you cut out the lows, I am not sure what to think...I guess I would just have to hear them!

Not in the current form of the 805.

What are you talking about? The diamonds are about as non-fatiguing as you can get. Anyway, we tried to retrofit some diamond tweeters into the demo 805S at my dealer's shop several motnhs ago and while there were issues as the speakers are not made for the diamonds, nevertheless, the new tweeters vastly improved the performance of the speakers. When it happens it's going to be something the WAF limited are going to flock to.

To my knowledge there have to be some significant changes in terms of the entire box architecture... They are searching for better bass response too, but not in expence of other major issues. All affair much more tricky than simple swap of tweeters.