Thanks I look forward to your response.I dont think Adire have used flux stabalizing rings in their woofers. I've looked around their stuff quite a bit and have found no mention of it. But in their latest Brahma and Tumult woofers they use a thing called XBL2 which keeps a very flat BL curve along its entire 30mm or so excursion.
Adire is distributing Eminence products for quite awhile now.
Cheers
Adrian