Basically the same as any other SEAS 1" dome tweeter. Dispersion characteristics are unaffected by material. For dome tweeters, the critical factors are the diameter of the dome, dome shape, and faceplate.
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Gotcha! This tweeter sounds like a game changer.
Tonight in a bookstore I saw that the latest edition of Stereophile features a review of a Crystal Cable bookshelf speaker that features the SEAS diamond tweeter (or some variation of it). The speaker also appears to use a Scan Speak Illuminator 6" woofer. Cost per pair of speakers is $20k. :eek:
Review will be on Stereophile's website soon.
Thanks for the heads up. Crystal Cable has the review on their website. I'd have to say that for $20K, the Stereophile review didn't seem to enthusiastic about the speaker. Seems like the overall balance of the speaker is a little off. The measured sensitivity is also pretty low at 81dB.
Yeah, the measurements could be - and should be - a lot better. The low sensitivity is somewhat ameloriated by the high impedance of the speakers, but that frequency response on-axis needs some work. Looks like the crossover isn't optimal; or maybe the two drivers chosen just don't work together optimally.
But, hey, they have a unique look; they use extravagant drivers, pricey crossover components, and silver internal wiring; and they cost a fortune. So that's a CLASS A component in the minds of Stereophile.
I am not at all surprised by the $20K price tag. These SEAS white diamond tweeters are the most expensive tweeters I have ever come across, but they are also the best sounding dome tweeters I have ever evaluated. I've been looking at some numbers and I don't think we could offer a pair of speakers with these tweeters and top notch woofers for anything less than $6K/pair. With that in mind, I am still going to design a set -- and soon :)