Zu Audio "Tone" full range driver T/S parameters

Hi All,

I have a pair of Zu audio Tone bookshelf speakers (I believe there were also called Omen bookshelf) and I would like to build a little larger cabinets to "squeeze" lower bass from them.
On the back panel there is "2010" so I believe it's the speakers production year, as far as I know there were few revisions for these speakers and there was a change in the full range driver at some point, from Zu260FRD/G4 to Zu260FRD/ND.
There was also a change in the super tweeter and in my speakers it looks like the newer model.
Does anyone knows which full range element has been used at 2010? And were I can find the driver's thiell small parameters?

Thanks
 
(-make an impedance measuring jig ad use Room EQ Wizard)- if a 10" thn probably based on the old spec Eminence B102which had lower qts and a more extend rang than the current B102

I made some fake Druids with the old B102 , apt50 and APT3- quit functional - mine didn't have the foam cone - just some bonded dacron lining


1716188993135.jpeg
 
Thanks.
In my speaker the driver looks different than the Eminence B102
The "dust cap" looks different and there is no foam surrounding.
Kindly see the attached photos
 

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