Is it possible to cover the whole spectrum, high SPL, low distortion with a 2-way?

Datasheet of the SICA.

Almost bought 4 new boxed units for only €150, but decided to move to larger diaphragms.
This driver is also available with Polyimide diaphragm and that's what I wanted, but these are very hard and expensive to get by seperately.
The Titanium diaphragm (2nd image) is hard suspended and somewhat simlar to Eminence PSD diaphragms.
The diaphragm of the smaller SICA driver used in the Monitor 8.12 (3rd image), looks a lot better.
 

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And voilà, I found the driver I was searching for and that were probably also used in the Bullfrog MK1.

Still haven't figured out the brand/type, but these are the drivers I could obtain alsmost free of charge.
 

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Funny that you mention the HF10AK, because I considered highlighting that driver yesterday, but didn't want to come across as a Faital fanboy 😉

BTW, I know and like FaitalPRO, but don't own any as of yet.

I expect the HF10AK to perform well behind a Zingali Omniray horn.
 
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Funny that you mention the HF10AK, because I considered highlighting that driver yesterday, but didn't want to come across as a Faital fanboy 😉

BTW, I know and like FaitalPRO, but don't own any as of yet.

I own and have used quite a few. I have several pairs of the 15PR400 40hm version and love them. Use the 2" BMS mid driver and the HF10AK in my favourite 3 way.it is the best pair of speakers I have heard. Obviously expensive to build, but worth every penny.

I think a two way as this thread started out as would be awesome with the drivers as used in the Zingali's, maybe with the better 10AK doing tweeter duty.