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Full range speaker manufacturers spend tons of money on R&D to get their product to be cohesive.Removing the wizzer would defeat the purpose of having a full range driver.I have no idea what it would do to the sound of the main driver.This seems like a waste of time and money to me,but,what you do is none of my business.Why not just use a conventional setup?Just my thoughts.
I believe that the whizzer simply generates a broad band of high frequency sound (noise?), and the ear "thinks" it hears in this band the harmonics appropriate for lower frequency fundamental sounds. If you remove the whizzer the speaker will have less high frequency output, but what there is will be real.
I have seen some paper (AES) that had shown the 'wizzer' is useless and does not actually do anything.
LOL - try telling that to Zu Audio that use a modified guitar bass player woofer and claim to make a very high end speaker!
More seriously - the wizzer cone helps reduce the directionality of the driver at higher frequencies (less beaming) - so if you don't send any high frequencies to the driver (crossover at say 4 Khz to a tweeter) then you could simply leave it in place and it won't do much harm.
If you remove it then try to weigh it and add the same weight in glue on the dust cover in order to compensate and keep the driver balanced as per the orginal design.
I'm staying away from Elizabeth, I don't want my wizzer cut off.
Elizabeth...ALL cone drivers "break up" when fed a full range signal. Only the inner area of the cone and the dust cap emit the highest frequencies. The cone can be designed to break up in a predictable manner, and the breakup characteristics determine how the driver will sound... good or bad.
Advocates of single driver speaker systems claim that there is no crossover to degrade the sound, but this is not true. The crossover is a mechanical filter, and that's much harder to design and fabricate than an electronic one.