did u guys know these existed?

[adio 5,000+ posts]

Yes, they are sold out of the XJ series which are the high Q, large enclosure/IB drivers. However, the Tempest-X and Shiva-X (which are the ones linked to in the first post) are still available and are only about $10 more with equal or better performance (better if you like smaller enclosures than the XJ series required).

any enclosure/box size recommendations for both the tempest-x and shiva-x? i couldn't find any

 

[newusername 10+ year member]

any enclosure/box size recommendations for both the tempest-x and shiva-x? i couldn't find any

There is this specifically from Kevin for the Tempest-X:

http://www.diycable.com/main/pdf/app.pdf

I could look at the Shiva-X for you if you'd like or you can email Kevin directly using the Contact info on the site.