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Thanks
That would make sense as it has always be the polarity JBL used in their compression drivers (even the 2435).
How do you wire your truextents?

What is the polarity on the 476Be/Mg ?

Maybe we will see Mg diaphragms on some por drivers also?
And maybe even a pro version of the 476Mg?

Here is a comparison with the 2452H-SL on the same waveguide, that Zilch posted here: http://audioheritage.org/vbulletin/showthread.php?t=3450&page=6#84
(consider the green curve)

It seems to...

4313B, do you have distortion measurements for all these combinations?

Did you give it a listen in your dual 1200FE speaker?

Could that smooth curve indicate that the 476Be sound better on that wave guide than it does on the H9800/H4338 (with proper EQ for both, and...

:jawdrop:the 476Be looks really smooth on the wave guide! And this really is without any EQ?
Impressive!