B&W matrix 801 s2 still a relavant speaker.

I just sold a pair for over $1500- and the guy drove over 200 miles to get them, so at least one other person finds them relevant.
One thing is certain, if you want to get the best out of them be prepared to run powerful amps into them and get them on good stands.

I started out running a 250w Bryston in stereo eventually I purchased another 250w Bryston and then they were happy. Over the years I added Bass Alignment and Sound Anchor stands. I agree with Jeff the Kevlar mids are very nice and the bass drivers do have a hard time keeping up but the extra horsepower helps with that. Eventually it was the tweeter I could no longer live with.
I am currently building a system around a pair of Joseph Audio monitors. Incredible mids and tweeter and not so power hungry but not as dynamic as the 801's.

They will shake a foundation if the bass units are not properly controlled. They are some big ass bass drivers that will move some air, that's for sure.

Are the twins becoming good little audio kids?

The moniker is a nickname that guys used for me in the 80's when we were installing state of the art (re:loud) audio/video in nightclubs around Boston-NYC. The Zen comes from my education where I wasted my parents money on studying comparative (eastern) religion.

Unfortunately my hearing was unprotected in 100+ db music for hours on end, for years and years and I am paying the price now. These systems could literally knock the wind out of you with a bass note (dozens of JBL 12-15" drivers driven by gobs of current). All us guys from the 80's crew are dealing with hearing problems. That's why I like the 801's with diesel powered amps, it's the only thing I can hear.