For sale, the driver that's considered the best subwoofer driver in the world, the mighty LMS Ultra 18". For details, please see the data.bass.com review.
They were bought second-hand on July 2018, but due to several constraints, i didn't had the change to use them, they are boxed since that time.
I only mounted them to take a free air REW measure to confirm that everything was OK when i received them, and then, they were boxed and stored.
One of the subs has very small mark, as can be faintly seen in the first picture, but its very very small and without any impact visually or