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    Nope. Doug Button has removed the diamond...

    Nope. Doug Button has removed the diamond surrounds on all of the recent JBL compression drivers. The diamond surrounds were a workaround to gain better HF extension by taking advantage of the...
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    The driver is described here: ...

    The driver is described here:

    http://www.audioheritage.org/html/projectmay/technology/045be.htm

    The picture below shows a disassembled example with its 1" diaphragm.
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    045Be The 043 was a typo. I have subsequently...

    045Be

    The 043 was a typo. I have subsequently corrected this in the thread title.
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