Sub for Coinincents

Looking for a sub to match with my Coincident Triumph Sigs. Any recommendations?
I spoke to Israel last month about them.
999.00 for the pair.You set the Triumphs
on top of the subs.
Passive with 8"woofers.
I will be going this route soon.

I am not sure if Israel is making them anymore, but I use a pair of Coincident Troubass subwoofers.

They were designed to serve as stands for the Troubadors and Digital Masters ala how Wilson uses the Puppies with the WATTS.

Powerful, clean, and deep. Highly recommended!