Hippocrates and Galen advanced the concept of humorism, a theory which held that we get sick from imbalances of the four basic substances within the human body, which they identified as blood, phlegm, black bile and yellow bile.
If I bought a pair of $190,000 Focal Grande Utopia EM and found out the beryllium isn't any more pure than a pair of $2700 speakers, I'd be very upset. I would also be upset if the beryllium tweeters in my $190K speakers cost less than diamond tweeters in a pair of $5K speakers.
This setup also sounded really, really good. Im a fan of laid back ribbon tweeters, and beryllium seems to, for the most part, also have a laid back sound for metal tweeters, but they have great detail as well. Both, ribbons and beryllium from my experience are very fast which helps in the detail department. 15 posts.