i had the 210--I really really loved the tone, but the weight was kind of a turnoff for me--110 lbs for the 210, I believe the 410 is more. great tone though
yeah that's the thing about basson, they are heavy as crap. a friend of mine had an 810 and it weighed like 250#
The bass responce of these cabs is hugh! But they also require a LOT of power to work properly. They are nice cabs though. I have a rare B310SC cab that is about 125 pounds. It is the first cab that I have played though were I EVER had to cut the bass frequencies because they were soo overwelming.
I think the weight/low sensitivity could be in part due to the fact they advertise as "flat down to 28hz"