Diamond vs Aluminum tweeters for B&W 800 series

Very nice of you Nick, but he'll still have to have the crossovers modified.

roxy54

A client once told me, "I don’t have to do anything". That quieted the room.

OP might want to consider the crossover, but slight changes might not be obvious, and who knows if they will be detrimental.

Any product, when considering substitution, I always imagine the OEM making different decisions originally, i.e. what if the only reason they didn’t use the SEAS was availability, track record, price, color choice ..... or if they chose a Beryllium Tweeter, or Boron dusted diaphragm, or if JSE had picked a Morel Tweeter instead of the flammable Dynaudio D21. What if that engineer had taken a job with a different firm, and a ribbon tweeter and super tweeter had been chosen as the best marketing choice in that era,

These designs all use ’then newest’ high technology, computer science, that does not make them perfect, then or now, 

So many assume a need for perfection, I would install them, listen, be happy or not. My friends listened, then altered/upgraded the crossovers, then concluded they wouldn’t bother if doing it again, it wasn’t worth the work, cost is not a consideration for either of them, and they have younger ears.

@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. 

boostedis

I agree, someone is missing the point.

is it a high performance tweeter, handles say 1,500 to 20,000 essentially equally? so, the crossover will send it what? whatever the content is, everything the amp sends starting at ____? 

does it physically fit?

essentially same efficiency? Q? 

Pair of Randomly Chosen Morel Tweeters $899.

It ain’t rocket science, those Morels might sound better to many fed from the existing crossover.

Somebody must have found successful substitutes for those expensive tweeters, and you do not HAVE to alter the crossover. 

It could be argued it’s a good time to restore the crossovers in any case, so that makes it even easier to try a substitute.

I forgot the tweeters were the ugly tapered bullets.

tweeter replacement video, he forgets to explain you should do it barefoot

https://www.youtube.com/watch?v=M05uQtj6g0w