| THE ONLY COMPANY THAT HAS ADVANCED THE DESIGN OF A MODERN DRIVER IS JBL,,, GOING FROM THE WESTERN ELECTRIC DESIGN TO THE 375,,376...PRO VERSION 2440,,2441... TO the 2450 types..USEING COHERIENT PHASE PLUG DESIGN TOPOLIGY that unit was adapted to the new 475..476 ultimate PHASE COHERIENT PLUG DESIGN AND USEING BERYLLIAM DIAPHRAMS... TAD HAD TO REDESIGN THE 4001 driver to the new 4003 driver,,REDESIGNING there PHASE PLUG (5 slit configuration) TAD BERYLIAM MANUFACTURE IS DONE DIFFERENTLY THAN LANSING,, TO KEEP UP WITH JBL,,,JBL HAS ALSO DONE A SMALLER VERSION,,WITH TAD FOLLOWING,, BRUSH WELMAN,,TRUEXTANT is now making BERYLIAM diaphrams to be used in earlier older JBL UNITS,,,($700 each) JBL IS NOW MAKING A MAGNESIUM DIAPHRAM for the 476, YOU CAN ORDER either type of diaphrame,,BUT driver are costly.. I FEEL THE NEW VITAVOX S2 is a none starter in design,, BUT MAYBE BRUSH WELLMAN WILL MANUFACTURE A Be diaphran to fit... |
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