Diamond vs Aluminum tweeters for B&W 800 series

My experience with speaker design has shown me that tweeter material isn’t nearly as important as the designers choice of crossover values. A bright commercial speaker isn’t bright because of the tweeter material, it’s bright because they wanted it that way for a Wow-factor! They could easily pad down the high frequency response without changing the tweeter material. BTW, @roxy54 is correct! You can’t simply swap in and out drivers without reworking the crossover. It doesn’t work like that…..

@elliottbnewcombjr 

You are missing the point. To achieve the desired frequency response when changing tweeter (or any driver regardless of the material) requires changing the crossover. There is no getting around this unless you just happen to get lucky and the TS parameters match. When manufacturers change tweeter materials it’s mostly marketing to get you excited about buying, but the magic is in other design areas than just the cone material. 

@elliottbnewcombjr 

It would be interesting to see how your proposed Morels measure with the stock B&W crossovers. My guess is that it won’t be flat. Whether you prefer the experimental outcome or not is purely subjective….