Audiophilepure

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“Any such statement epitomizes a transducer designer’s mutually exclusive goals. The thinner and bigger he make her diaphragms, the less rigid and stable they will be when driven. Increased material thickness adds strength but also weight. And for pistonic devices meant to move many thousands of times per second, less mass is better. This basic setup is behind the current trend into ‘hi-tech’ materials particularly for tweeters which undergo the most rapid of movements. The expense of laboratory-grown diamond prized for its ultimate hardness thus far limits it to mostly tweeters. But in the costliest of speakers, diamond has begun to appear in larger midranges. For drivers with increased breakup/deformation challenges from larger surfaces and excursions, clever engineers exploit dissimilar material bonding. For woofers, this could be carbon skins over foam, vapour-deposited metal on paper, harder oxide layers over softer cores or similar variations on the theme. With Fostex, these transducers are 99.9% pure Magnesium, not an alloy or multi-lam.”