From Focal’s press release 2009.
(Okay it was more than 4 years ago).
“Live from” Utopia 3
”Electra 1000 BE 2 adopts the same pure Beryllium 1 1/4 (27 mm)) dome (instead of 1” (25mm)) as Utopia 3, for a real improvement of efficiency and response around the cut-off frequency, which permits an easier cross-reference with the midrange speaker. Of course the tweeter keeps the IAL type load initiated by Electra and also used for Utopia 3.”
(Okay it was more than 4 years ago).
“Live from” Utopia 3
”Electra 1000 BE 2 adopts the same pure Beryllium 1 1/4 (27 mm)) dome (instead of 1” (25mm)) as Utopia 3, for a real improvement of efficiency and response around the cut-off frequency, which permits an easier cross-reference with the midrange speaker. Of course the tweeter keeps the IAL type load initiated by Electra and also used for Utopia 3.”